./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:59:05,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:59:05,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:59:05,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:59:05,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:59:05,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:59:05,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:59:05,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:59:05,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:59:05,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:59:05,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:59:05,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:59:05,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:59:05,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:59:05,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:59:05,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:59:05,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:59:05,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:59:05,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:59:05,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:59:05,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:59:05,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:59:05,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:59:05,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:59:05,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:59:05,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:59:05,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:59:05,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:59:05,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:59:05,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:59:05,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:59:05,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:59:05,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:59:05,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:59:05,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:59:05,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:59:05,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:59:05,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:59:05,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:59:05,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:59:05,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:59:05,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 12:59:05,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:59:05,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:59:05,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:59:05,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:59:05,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:59:05,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:59:05,953 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:59:05,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:59:05,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:59:05,953 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:59:05,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:59:05,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:59:05,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:59:05,955 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 12:59:05,955 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 12:59:05,956 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 12:59:05,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:59:05,956 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:59:05,956 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:59:05,956 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:59:05,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:59:05,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:59:05,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:59:05,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:59:05,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:59:05,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:59:05,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:59:05,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:59:05,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:59:05,960 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 [2021-11-23 12:59:06,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:59:06,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:59:06,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:59:06,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:59:06,314 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:59:06,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/locks/test_locks_6.c [2021-11-23 12:59:06,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/data/1ee4ac63f/0730457a3ae3481581b9ffb9353202a2/FLAGaaf1dda21 [2021-11-23 12:59:06,923 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:59:06,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/sv-benchmarks/c/locks/test_locks_6.c [2021-11-23 12:59:06,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/data/1ee4ac63f/0730457a3ae3481581b9ffb9353202a2/FLAGaaf1dda21 [2021-11-23 12:59:07,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/data/1ee4ac63f/0730457a3ae3481581b9ffb9353202a2 [2021-11-23 12:59:07,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:59:07,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:59:07,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:59:07,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:59:07,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:59:07,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771f6fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07, skipping insertion in model container [2021-11-23 12:59:07,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:59:07,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:59:07,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-11-23 12:59:07,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:59:07,549 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:59:07,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-11-23 12:59:07,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:59:07,584 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:59:07,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07 WrapperNode [2021-11-23 12:59:07,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:59:07,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:59:07,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:59:07,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:59:07,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,622 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 94 [2021-11-23 12:59:07,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:59:07,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:59:07,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:59:07,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:59:07,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:59:07,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:59:07,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:59:07,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:59:07,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (1/1) ... [2021-11-23 12:59:07,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:59:07,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:59:07,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:59:07,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:59:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:59:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:59:07,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:59:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:59:07,804 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:59:07,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:59:07,983 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:59:07,990 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:59:07,990 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:59:07,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:59:07 BoogieIcfgContainer [2021-11-23 12:59:07,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:59:07,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:59:07,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:59:07,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:59:07,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:59:07" (1/3) ... [2021-11-23 12:59:08,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b2eca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:59:07, skipping insertion in model container [2021-11-23 12:59:08,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:07" (2/3) ... [2021-11-23 12:59:08,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b2eca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:59:08, skipping insertion in model container [2021-11-23 12:59:08,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:59:07" (3/3) ... [2021-11-23 12:59:08,002 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2021-11-23 12:59:08,008 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:59:08,009 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 12:59:08,060 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:59:08,069 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:59:08,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 12:59:08,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 12:59:08,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:08,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 12:59:08,094 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash 28807962, now seen corresponding path program 1 times [2021-11-23 12:59:08,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:08,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183389651] [2021-11-23 12:59:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:08,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:08,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183389651] [2021-11-23 12:59:08,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183389651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:08,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:08,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:59:08,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354931217] [2021-11-23 12:59:08,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:08,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:59:08,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:08,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:59:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:59:08,336 INFO L87 Difference]: Start difference. First operand has 29 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:08,349 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2021-11-23 12:59:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:59:08,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-23 12:59:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:08,359 INFO L225 Difference]: With dead ends: 29 [2021-11-23 12:59:08,359 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 12:59:08,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:59:08,365 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:08,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:08,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 12:59:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-23 12:59:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2021-11-23 12:59:08,406 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 44 transitions. Word has length 5 [2021-11-23 12:59:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:08,407 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 44 transitions. [2021-11-23 12:59:08,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 44 transitions. [2021-11-23 12:59:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:59:08,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:08,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:59:08,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:59:08,409 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:08,410 INFO L85 PathProgramCache]: Analyzing trace with hash 889695787, now seen corresponding path program 1 times [2021-11-23 12:59:08,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:08,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004933530] [2021-11-23 12:59:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:08,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:08,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:08,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004933530] [2021-11-23 12:59:08,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004933530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:08,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:08,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:59:08,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704630377] [2021-11-23 12:59:08,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:08,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:08,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:08,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:08,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,468 INFO L87 Difference]: Start difference. First operand 27 states and 44 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:08,478 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2021-11-23 12:59:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:08,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 12:59:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:08,481 INFO L225 Difference]: With dead ends: 26 [2021-11-23 12:59:08,481 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 12:59:08,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,483 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:08,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 43 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 12:59:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-23 12:59:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 41 transitions. [2021-11-23 12:59:08,490 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 41 transitions. Word has length 6 [2021-11-23 12:59:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:08,491 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 41 transitions. [2021-11-23 12:59:08,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 41 transitions. [2021-11-23 12:59:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 12:59:08,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:08,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:08,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:59:08,493 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash -721193823, now seen corresponding path program 1 times [2021-11-23 12:59:08,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:08,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714550248] [2021-11-23 12:59:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:08,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:08,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:08,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714550248] [2021-11-23 12:59:08,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714550248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:08,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:08,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:08,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831122166] [2021-11-23 12:59:08,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:08,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:08,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:08,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,561 INFO L87 Difference]: Start difference. First operand 24 states and 41 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:08,583 INFO L93 Difference]: Finished difference Result 45 states and 77 transitions. [2021-11-23 12:59:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:08,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 12:59:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:08,585 INFO L225 Difference]: With dead ends: 45 [2021-11-23 12:59:08,585 INFO L226 Difference]: Without dead ends: 45 [2021-11-23 12:59:08,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,588 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:08,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-23 12:59:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2021-11-23 12:59:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2021-11-23 12:59:08,598 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 13 [2021-11-23 12:59:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:08,599 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2021-11-23 12:59:08,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2021-11-23 12:59:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 12:59:08,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:08,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:08,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:59:08,601 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash -41135453, now seen corresponding path program 1 times [2021-11-23 12:59:08,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:08,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120146022] [2021-11-23 12:59:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:08,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:08,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:08,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120146022] [2021-11-23 12:59:08,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120146022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:08,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:08,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:08,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673652804] [2021-11-23 12:59:08,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:08,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:08,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,682 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:08,718 INFO L93 Difference]: Finished difference Result 45 states and 75 transitions. [2021-11-23 12:59:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:08,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 12:59:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:08,721 INFO L225 Difference]: With dead ends: 45 [2021-11-23 12:59:08,721 INFO L226 Difference]: Without dead ends: 45 [2021-11-23 12:59:08,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,723 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 28 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:08,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 87 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-23 12:59:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2021-11-23 12:59:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 42 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 74 transitions. [2021-11-23 12:59:08,734 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 74 transitions. Word has length 13 [2021-11-23 12:59:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:08,735 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 74 transitions. [2021-11-23 12:59:08,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,735 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2021-11-23 12:59:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:59:08,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:08,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:08,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:59:08,737 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash -881957389, now seen corresponding path program 1 times [2021-11-23 12:59:08,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:08,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281738835] [2021-11-23 12:59:08,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:08,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:08,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:08,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281738835] [2021-11-23 12:59:08,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281738835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:08,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:08,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:08,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552219723] [2021-11-23 12:59:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:08,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:08,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:08,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,842 INFO L87 Difference]: Start difference. First operand 43 states and 74 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:08,864 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2021-11-23 12:59:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:08,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 12:59:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:08,866 INFO L225 Difference]: With dead ends: 48 [2021-11-23 12:59:08,866 INFO L226 Difference]: Without dead ends: 48 [2021-11-23 12:59:08,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,869 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:08,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 96 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-23 12:59:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2021-11-23 12:59:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 45 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 76 transitions. [2021-11-23 12:59:08,879 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 76 transitions. Word has length 14 [2021-11-23 12:59:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:08,880 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 76 transitions. [2021-11-23 12:59:08,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2021-11-23 12:59:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:59:08,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:08,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:08,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:59:08,882 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:08,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:08,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1274984399, now seen corresponding path program 1 times [2021-11-23 12:59:08,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:08,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236746819] [2021-11-23 12:59:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:08,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:08,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236746819] [2021-11-23 12:59:08,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236746819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:08,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:08,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:08,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200161704] [2021-11-23 12:59:08,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:08,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:08,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,955 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:08,971 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2021-11-23 12:59:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:08,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 12:59:08,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:08,974 INFO L225 Difference]: With dead ends: 83 [2021-11-23 12:59:08,974 INFO L226 Difference]: Without dead ends: 83 [2021-11-23 12:59:08,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:08,976 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 25 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:08,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 77 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:08,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-23 12:59:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2021-11-23 12:59:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 60 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 101 transitions. [2021-11-23 12:59:08,988 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 101 transitions. Word has length 14 [2021-11-23 12:59:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:08,989 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 101 transitions. [2021-11-23 12:59:08,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 101 transitions. [2021-11-23 12:59:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:59:08,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:08,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:08,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:59:08,991 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:08,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:08,992 INFO L85 PathProgramCache]: Analyzing trace with hash -594926029, now seen corresponding path program 1 times [2021-11-23 12:59:08,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:08,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167029420] [2021-11-23 12:59:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:08,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167029420] [2021-11-23 12:59:09,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167029420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579659964] [2021-11-23 12:59:09,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,052 INFO L87 Difference]: Start difference. First operand 61 states and 101 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,079 INFO L93 Difference]: Finished difference Result 85 states and 136 transitions. [2021-11-23 12:59:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 12:59:09,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,081 INFO L225 Difference]: With dead ends: 85 [2021-11-23 12:59:09,082 INFO L226 Difference]: Without dead ends: 85 [2021-11-23 12:59:09,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,084 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 27 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 88 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-23 12:59:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2021-11-23 12:59:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.646341463414634) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 135 transitions. [2021-11-23 12:59:09,100 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 135 transitions. Word has length 14 [2021-11-23 12:59:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,101 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 135 transitions. [2021-11-23 12:59:09,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2021-11-23 12:59:09,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 12:59:09,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:59:09,103 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -869595720, now seen corresponding path program 1 times [2021-11-23 12:59:09,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689815446] [2021-11-23 12:59:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689815446] [2021-11-23 12:59:09,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689815446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612058926] [2021-11-23 12:59:09,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,155 INFO L87 Difference]: Start difference. First operand 83 states and 135 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,168 INFO L93 Difference]: Finished difference Result 87 states and 136 transitions. [2021-11-23 12:59:09,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 12:59:09,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,170 INFO L225 Difference]: With dead ends: 87 [2021-11-23 12:59:09,170 INFO L226 Difference]: Without dead ends: 87 [2021-11-23 12:59:09,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,172 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 92 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-23 12:59:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-11-23 12:59:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.6071428571428572) internal successors, (135), 84 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2021-11-23 12:59:09,182 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 15 [2021-11-23 12:59:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,183 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2021-11-23 12:59:09,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2021-11-23 12:59:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 12:59:09,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:59:09,185 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1262622730, now seen corresponding path program 1 times [2021-11-23 12:59:09,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124088581] [2021-11-23 12:59:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124088581] [2021-11-23 12:59:09,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124088581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541741343] [2021-11-23 12:59:09,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,219 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,234 INFO L93 Difference]: Finished difference Result 159 states and 244 transitions. [2021-11-23 12:59:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 12:59:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,236 INFO L225 Difference]: With dead ends: 159 [2021-11-23 12:59:09,236 INFO L226 Difference]: Without dead ends: 159 [2021-11-23 12:59:09,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,238 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 79 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-23 12:59:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2021-11-23 12:59:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.5576923076923077) internal successors, (243), 156 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 243 transitions. [2021-11-23 12:59:09,254 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 243 transitions. Word has length 15 [2021-11-23 12:59:09,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,254 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 243 transitions. [2021-11-23 12:59:09,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,255 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 243 transitions. [2021-11-23 12:59:09,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 12:59:09,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:59:09,257 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1942681100, now seen corresponding path program 1 times [2021-11-23 12:59:09,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114422550] [2021-11-23 12:59:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114422550] [2021-11-23 12:59:09,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114422550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792403139] [2021-11-23 12:59:09,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,290 INFO L87 Difference]: Start difference. First operand 157 states and 243 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,301 INFO L93 Difference]: Finished difference Result 191 states and 296 transitions. [2021-11-23 12:59:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 12:59:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,303 INFO L225 Difference]: With dead ends: 191 [2021-11-23 12:59:09,303 INFO L226 Difference]: Without dead ends: 191 [2021-11-23 12:59:09,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,305 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 22 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 98 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-23 12:59:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2021-11-23 12:59:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.5320512820512822) internal successors, (239), 156 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2021-11-23 12:59:09,319 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 15 [2021-11-23 12:59:09,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,320 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2021-11-23 12:59:09,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2021-11-23 12:59:09,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 12:59:09,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:59:09,322 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash -486383640, now seen corresponding path program 1 times [2021-11-23 12:59:09,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950500826] [2021-11-23 12:59:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950500826] [2021-11-23 12:59:09,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950500826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108962090] [2021-11-23 12:59:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,376 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,391 INFO L93 Difference]: Finished difference Result 275 states and 416 transitions. [2021-11-23 12:59:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 12:59:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,394 INFO L225 Difference]: With dead ends: 275 [2021-11-23 12:59:09,394 INFO L226 Difference]: Without dead ends: 275 [2021-11-23 12:59:09,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,395 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 73 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-23 12:59:09,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2021-11-23 12:59:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4955357142857142) internal successors, (335), 224 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2021-11-23 12:59:09,411 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 16 [2021-11-23 12:59:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,411 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2021-11-23 12:59:09,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2021-11-23 12:59:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 12:59:09,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:59:09,415 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash 193674730, now seen corresponding path program 1 times [2021-11-23 12:59:09,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497973515] [2021-11-23 12:59:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497973515] [2021-11-23 12:59:09,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497973515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791081886] [2021-11-23 12:59:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,444 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,458 INFO L93 Difference]: Finished difference Result 299 states and 428 transitions. [2021-11-23 12:59:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 12:59:09,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,461 INFO L225 Difference]: With dead ends: 299 [2021-11-23 12:59:09,461 INFO L226 Difference]: Without dead ends: 299 [2021-11-23 12:59:09,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,462 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 25 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-23 12:59:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2021-11-23 12:59:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.4425675675675675) internal successors, (427), 296 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2021-11-23 12:59:09,477 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 16 [2021-11-23 12:59:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,477 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2021-11-23 12:59:09,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2021-11-23 12:59:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 12:59:09,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:59:09,481 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2102192011, now seen corresponding path program 1 times [2021-11-23 12:59:09,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924990625] [2021-11-23 12:59:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924990625] [2021-11-23 12:59:09,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924990625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013964815] [2021-11-23 12:59:09,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,526 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,548 INFO L93 Difference]: Finished difference Result 311 states and 436 transitions. [2021-11-23 12:59:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-23 12:59:09,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,551 INFO L225 Difference]: With dead ends: 311 [2021-11-23 12:59:09,551 INFO L226 Difference]: Without dead ends: 311 [2021-11-23 12:59:09,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,552 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 27 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 84 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-23 12:59:09,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2021-11-23 12:59:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.4123376623376624) internal successors, (435), 308 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 435 transitions. [2021-11-23 12:59:09,568 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 435 transitions. Word has length 17 [2021-11-23 12:59:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,568 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 435 transitions. [2021-11-23 12:59:09,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 435 transitions. [2021-11-23 12:59:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 12:59:09,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:59:09,586 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1709165001, now seen corresponding path program 1 times [2021-11-23 12:59:09,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953401280] [2021-11-23 12:59:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953401280] [2021-11-23 12:59:09,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953401280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076015094] [2021-11-23 12:59:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,670 INFO L87 Difference]: Start difference. First operand 309 states and 435 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,689 INFO L93 Difference]: Finished difference Result 519 states and 716 transitions. [2021-11-23 12:59:09,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-23 12:59:09,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,693 INFO L225 Difference]: With dead ends: 519 [2021-11-23 12:59:09,693 INFO L226 Difference]: Without dead ends: 519 [2021-11-23 12:59:09,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,694 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 71 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-23 12:59:09,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 453. [2021-11-23 12:59:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.3694690265486726) internal successors, (619), 452 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 619 transitions. [2021-11-23 12:59:09,715 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 619 transitions. Word has length 17 [2021-11-23 12:59:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,717 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 619 transitions. [2021-11-23 12:59:09,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 619 transitions. [2021-11-23 12:59:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 12:59:09,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:59:09,721 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1905743925, now seen corresponding path program 1 times [2021-11-23 12:59:09,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569450982] [2021-11-23 12:59:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569450982] [2021-11-23 12:59:09,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569450982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100090745] [2021-11-23 12:59:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,773 INFO L87 Difference]: Start difference. First operand 453 states and 619 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,790 INFO L93 Difference]: Finished difference Result 583 states and 756 transitions. [2021-11-23 12:59:09,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-23 12:59:09,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,794 INFO L225 Difference]: With dead ends: 583 [2021-11-23 12:59:09,795 INFO L226 Difference]: Without dead ends: 583 [2021-11-23 12:59:09,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,799 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 91 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-23 12:59:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2021-11-23 12:59:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.3017241379310345) internal successors, (755), 580 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 755 transitions. [2021-11-23 12:59:09,819 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 755 transitions. Word has length 17 [2021-11-23 12:59:09,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,821 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 755 transitions. [2021-11-23 12:59:09,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 755 transitions. [2021-11-23 12:59:09,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:59:09,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:59:09,823 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1444723487, now seen corresponding path program 1 times [2021-11-23 12:59:09,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999623320] [2021-11-23 12:59:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999623320] [2021-11-23 12:59:09,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999623320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075731980] [2021-11-23 12:59:09,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,883 INFO L87 Difference]: Start difference. First operand 581 states and 755 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:09,906 INFO L93 Difference]: Finished difference Result 599 states and 756 transitions. [2021-11-23 12:59:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:09,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 12:59:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:09,911 INFO L225 Difference]: With dead ends: 599 [2021-11-23 12:59:09,911 INFO L226 Difference]: Without dead ends: 599 [2021-11-23 12:59:09,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,912 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 26 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:09,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 80 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-23 12:59:09,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2021-11-23 12:59:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 1.266778523489933) internal successors, (755), 596 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 755 transitions. [2021-11-23 12:59:09,929 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 755 transitions. Word has length 18 [2021-11-23 12:59:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:09,930 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 755 transitions. [2021-11-23 12:59:09,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 755 transitions. [2021-11-23 12:59:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:59:09,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:09,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:09,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:59:09,932 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:09,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1051696477, now seen corresponding path program 1 times [2021-11-23 12:59:09,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:09,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867280451] [2021-11-23 12:59:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:09,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:09,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:09,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867280451] [2021-11-23 12:59:09,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867280451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:09,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:09,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:09,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124799163] [2021-11-23 12:59:09,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:09,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:09,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:09,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:09,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:09,987 INFO L87 Difference]: Start difference. First operand 597 states and 755 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:10,005 INFO L93 Difference]: Finished difference Result 965 states and 1171 transitions. [2021-11-23 12:59:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:10,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 12:59:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:10,011 INFO L225 Difference]: With dead ends: 965 [2021-11-23 12:59:10,012 INFO L226 Difference]: Without dead ends: 965 [2021-11-23 12:59:10,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:10,013 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:10,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 68 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2021-11-23 12:59:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 901. [2021-11-23 12:59:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.23) internal successors, (1107), 900 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1107 transitions. [2021-11-23 12:59:10,040 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1107 transitions. Word has length 18 [2021-11-23 12:59:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:10,040 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1107 transitions. [2021-11-23 12:59:10,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1107 transitions. [2021-11-23 12:59:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:59:10,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:10,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:10,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:59:10,045 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 12:59:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:10,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1731754847, now seen corresponding path program 1 times [2021-11-23 12:59:10,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:10,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663307652] [2021-11-23 12:59:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:10,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:10,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:10,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663307652] [2021-11-23 12:59:10,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663307652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:10,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:10,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:10,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392864214] [2021-11-23 12:59:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:10,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:10,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:10,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:10,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:10,084 INFO L87 Difference]: Start difference. First operand 901 states and 1107 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:10,101 INFO L93 Difference]: Finished difference Result 1123 states and 1282 transitions. [2021-11-23 12:59:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:10,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 12:59:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:10,102 INFO L225 Difference]: With dead ends: 1123 [2021-11-23 12:59:10,102 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 12:59:10,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:10,103 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:10,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:10,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 12:59:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 12:59:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 12:59:10,105 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-11-23 12:59:10,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:10,105 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 12:59:10,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:10,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 12:59:10,106 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 12:59:10,108 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-11-23 12:59:10,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-11-23 12:59:10,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:59:10,115 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:10,117 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:59:10,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:59:10 BoogieIcfgContainer [2021-11-23 12:59:10,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:59:10,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:59:10,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:59:10,123 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:59:10,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:59:07" (3/4) ... [2021-11-23 12:59:10,129 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 12:59:10,151 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-23 12:59:10,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 12:59:10,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 12:59:10,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 12:59:10,198 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 12:59:10,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:59:10,199 INFO L158 Benchmark]: Toolchain (without parser) took 2899.22ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 58.5MB in the beginning and 44.5MB in the end (delta: 14.0MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2021-11-23 12:59:10,199 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:59:10,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.61ms. Allocated memory is still 100.7MB. Free memory was 58.3MB in the beginning and 74.5MB in the end (delta: -16.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:59:10,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.96ms. Allocated memory is still 100.7MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:59:10,200 INFO L158 Benchmark]: Boogie Preprocessor took 23.18ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 71.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:59:10,201 INFO L158 Benchmark]: RCFGBuilder took 345.57ms. Allocated memory is still 100.7MB. Free memory was 71.6MB in the beginning and 60.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:59:10,201 INFO L158 Benchmark]: TraceAbstraction took 2127.37ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 60.1MB in the beginning and 47.6MB in the end (delta: 12.5MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-11-23 12:59:10,202 INFO L158 Benchmark]: Witness Printer took 75.92ms. Allocated memory is still 121.6MB. Free memory was 47.6MB in the beginning and 44.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:59:10,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.61ms. Allocated memory is still 100.7MB. Free memory was 58.3MB in the beginning and 74.5MB in the end (delta: -16.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.96ms. Allocated memory is still 100.7MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.18ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 71.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 345.57ms. Allocated memory is still 100.7MB. Free memory was 71.6MB in the beginning and 60.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2127.37ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 60.1MB in the beginning and 47.6MB in the end (delta: 12.5MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * Witness Printer took 75.92ms. Allocated memory is still 121.6MB. Free memory was 47.6MB in the beginning and 44.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 107]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 425 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 425 mSDsluCounter, 1432 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 523 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 909 mSDtfsCounter, 86 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=17, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 243 ConstructedInterpolants, 0 QuantifiedInterpolants, 479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-23 12:59:10,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e8fd23-de27-4090-bcc2-9a851718fe6e/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE