./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:07:20,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:07:20,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:07:20,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:07:20,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:07:20,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:07:20,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:07:20,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:07:20,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:07:20,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:07:20,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:07:20,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:07:20,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:07:20,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:07:20,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:07:20,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:07:20,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:07:20,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:07:20,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:07:20,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:07:20,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:07:20,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:07:20,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:07:20,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:07:20,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:07:20,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:07:20,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:07:20,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:07:20,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:07:20,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:07:20,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:07:20,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:07:20,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:07:20,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:07:20,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:07:20,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:07:20,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:07:20,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:07:20,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:07:20,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:07:20,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:07:20,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:07:20,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:07:20,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:07:20,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:07:20,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:07:20,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:07:20,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:07:20,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:07:20,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:07:20,965 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:07:20,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:07:20,966 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:07:20,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:07:20,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:07:20,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:07:20,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:07:20,967 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:07:20,967 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:07:20,967 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:07:20,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:07:20,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:07:20,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:07:20,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:07:20,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:07:20,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:07:20,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:07:20,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:20,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:07:20,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:07:20,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:07:20,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:07:20,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:07:20,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 [2021-12-15 14:07:21,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:07:21,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:07:21,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:07:21,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:07:21,240 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:07:21,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2021-12-15 14:07:21,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb5a75cc/d12af686608d4bc0b4dbda9821a7ea71/FLAGb8003961b [2021-12-15 14:07:21,738 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:07:21,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2021-12-15 14:07:21,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb5a75cc/d12af686608d4bc0b4dbda9821a7ea71/FLAGb8003961b [2021-12-15 14:07:21,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb5a75cc/d12af686608d4bc0b4dbda9821a7ea71 [2021-12-15 14:07:21,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:07:21,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:07:21,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:21,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:07:21,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:07:21,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e36c456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21, skipping insertion in model container [2021-12-15 14:07:21,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:07:21,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:21,943 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-12-15 14:07:21,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:21,954 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:07:21,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-12-15 14:07:21,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:21,983 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:07:21,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21 WrapperNode [2021-12-15 14:07:21,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:21,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:21,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:07:21,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:07:21,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:21,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:22,016 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2021-12-15 14:07:22,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:22,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:07:22,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:07:22,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:07:22,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:22,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:22,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:22,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:22,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:22,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:22,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:22,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:07:22,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:07:22,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:07:22,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:07:22,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (1/1) ... [2021-12-15 14:07:22,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:22,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:07:22,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 14:07:22,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 14:07:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:07:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:07:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:07:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 14:07:22,158 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:07:22,160 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:07:22,311 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:07:22,316 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:07:22,316 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 14:07:22,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:22 BoogieIcfgContainer [2021-12-15 14:07:22,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:07:22,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:07:22,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:07:22,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:07:22,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:07:21" (1/3) ... [2021-12-15 14:07:22,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb8b73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:22, skipping insertion in model container [2021-12-15 14:07:22,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:21" (2/3) ... [2021-12-15 14:07:22,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb8b73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:22, skipping insertion in model container [2021-12-15 14:07:22,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:22" (3/3) ... [2021-12-15 14:07:22,338 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2021-12-15 14:07:22,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:07:22,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 14:07:22,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:07:22,408 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 [2021-12-15 14:07:22,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 14:07:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 25 states have internal predecessors, (43), 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) [2021-12-15 14:07:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 14:07:22,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 14:07:22,424 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash 28791081, now seen corresponding path program 1 times [2021-12-15 14:07:22,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443686116] [2021-12-15 14:07:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443686116] [2021-12-15 14:07:22,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443686116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:07:22,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504344204] [2021-12-15 14:07:22,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 14:07:22,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 14:07:22,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:07:22,608 INFO L87 Difference]: Start difference. First operand has 26 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 25 states have internal predecessors, (43), 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) [2021-12-15 14:07:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,620 INFO L93 Difference]: Finished difference Result 26 states and 40 transitions. [2021-12-15 14:07:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 14:07:22,622 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 [2021-12-15 14:07:22,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,630 INFO L225 Difference]: With dead ends: 26 [2021-12-15 14:07:22,630 INFO L226 Difference]: Without dead ends: 24 [2021-12-15 14:07:22,632 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 [2021-12-15 14:07:22,636 INFO L933 BasicCegarLoop]: 40 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, 40 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 [2021-12-15 14:07:22,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-15 14:07:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-15 14:07:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 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) [2021-12-15 14:07:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2021-12-15 14:07:22,669 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 5 [2021-12-15 14:07:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,669 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2021-12-15 14:07:22,670 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) [2021-12-15 14:07:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2021-12-15 14:07:22,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:07:22,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:07:22,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 14:07:22,672 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,675 INFO L85 PathProgramCache]: Analyzing trace with hash 889695243, now seen corresponding path program 1 times [2021-12-15 14:07:22,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800599930] [2021-12-15 14:07:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800599930] [2021-12-15 14:07:22,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800599930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:07:22,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029901088] [2021-12-15 14:07:22,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:22,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,747 INFO L87 Difference]: Start difference. First operand 24 states and 38 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) [2021-12-15 14:07:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,762 INFO L93 Difference]: Finished difference Result 23 states and 37 transitions. [2021-12-15 14:07:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:22,763 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 [2021-12-15 14:07:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,765 INFO L225 Difference]: With dead ends: 23 [2021-12-15 14:07:22,765 INFO L226 Difference]: Without dead ends: 21 [2021-12-15 14:07:22,769 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 [2021-12-15 14:07:22,770 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 37 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 [2021-12-15 14:07:22,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:22,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-15 14:07:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-15 14:07:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 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) [2021-12-15 14:07:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2021-12-15 14:07:22,777 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 6 [2021-12-15 14:07:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,778 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2021-12-15 14:07:22,779 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) [2021-12-15 14:07:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2021-12-15 14:07:22,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 14:07:22,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:22,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 14:07:22,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash -161811697, now seen corresponding path program 1 times [2021-12-15 14:07:22,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692225228] [2021-12-15 14:07:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692225228] [2021-12-15 14:07:22,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692225228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:22,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567038770] [2021-12-15 14:07:22,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:22,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,846 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-15 14:07:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,868 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2021-12-15 14:07:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:22,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-12-15 14:07:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,870 INFO L225 Difference]: With dead ends: 39 [2021-12-15 14:07:22,870 INFO L226 Difference]: Without dead ends: 39 [2021-12-15 14:07:22,871 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 [2021-12-15 14:07:22,877 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 67 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 [2021-12-15 14:07:22,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 67 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-15 14:07:22,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2021-12-15 14:07:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) [2021-12-15 14:07:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2021-12-15 14:07:22,903 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 12 [2021-12-15 14:07:22,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,904 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2021-12-15 14:07:22,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-15 14:07:22,905 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2021-12-15 14:07:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 14:07:22,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:22,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 14:07:22,907 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,908 INFO L85 PathProgramCache]: Analyzing trace with hash -971158323, now seen corresponding path program 1 times [2021-12-15 14:07:22,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:22,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279035025] [2021-12-15 14:07:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:22,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279035025] [2021-12-15 14:07:22,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279035025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:22,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108236522] [2021-12-15 14:07:22,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:22,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:22,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:22,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:22,964 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-15 14:07:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,983 INFO L93 Difference]: Finished difference Result 39 states and 63 transitions. [2021-12-15 14:07:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:22,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-12-15 14:07:22,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,985 INFO L225 Difference]: With dead ends: 39 [2021-12-15 14:07:22,986 INFO L226 Difference]: Without dead ends: 39 [2021-12-15 14:07:22,987 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 [2021-12-15 14:07:22,990 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 23 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 73 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 [2021-12-15 14:07:22,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 73 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-15 14:07:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-12-15 14:07:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 36 states have internal predecessors, (62), 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) [2021-12-15 14:07:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2021-12-15 14:07:22,998 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 12 [2021-12-15 14:07:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,998 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2021-12-15 14:07:22,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-15 14:07:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2021-12-15 14:07:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 14:07:22,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 14:07:23,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash -720980343, now seen corresponding path program 1 times [2021-12-15 14:07:23,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440251607] [2021-12-15 14:07:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440251607] [2021-12-15 14:07:23,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440251607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003071546] [2021-12-15 14:07:23,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,042 INFO L87 Difference]: Start difference. First operand 37 states and 62 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) [2021-12-15 14:07:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,051 INFO L93 Difference]: Finished difference Result 42 states and 65 transitions. [2021-12-15 14:07:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,052 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 [2021-12-15 14:07:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,054 INFO L225 Difference]: With dead ends: 42 [2021-12-15 14:07:23,054 INFO L226 Difference]: Without dead ends: 42 [2021-12-15 14:07:23,055 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 [2021-12-15 14:07:23,055 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 25 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 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 [2021-12-15 14:07:23,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 80 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-15 14:07:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-12-15 14:07:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.641025641025641) internal successors, (64), 39 states have internal predecessors, (64), 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) [2021-12-15 14:07:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 64 transitions. [2021-12-15 14:07:23,065 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 64 transitions. Word has length 13 [2021-12-15 14:07:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,066 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 64 transitions. [2021-12-15 14:07:23,066 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) [2021-12-15 14:07:23,066 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 64 transitions. [2021-12-15 14:07:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 14:07:23,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 14:07:23,072 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,073 INFO L85 PathProgramCache]: Analyzing trace with hash -40921973, now seen corresponding path program 1 times [2021-12-15 14:07:23,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818651335] [2021-12-15 14:07:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818651335] [2021-12-15 14:07:23,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818651335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363638990] [2021-12-15 14:07:23,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,103 INFO L87 Difference]: Start difference. First operand 40 states and 64 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) [2021-12-15 14:07:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,113 INFO L93 Difference]: Finished difference Result 71 states and 114 transitions. [2021-12-15 14:07:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,113 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 [2021-12-15 14:07:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,114 INFO L225 Difference]: With dead ends: 71 [2021-12-15 14:07:23,114 INFO L226 Difference]: Without dead ends: 71 [2021-12-15 14:07:23,115 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 [2021-12-15 14:07:23,115 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 65 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 [2021-12-15 14:07:23,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-15 14:07:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2021-12-15 14:07:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.6346153846153846) internal successors, (85), 52 states have internal predecessors, (85), 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) [2021-12-15 14:07:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2021-12-15 14:07:23,124 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 85 transitions. Word has length 13 [2021-12-15 14:07:23,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,124 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 85 transitions. [2021-12-15 14:07:23,125 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) [2021-12-15 14:07:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 85 transitions. [2021-12-15 14:07:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 14:07:23,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 14:07:23,126 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash -850268599, now seen corresponding path program 1 times [2021-12-15 14:07:23,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767506888] [2021-12-15 14:07:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767506888] [2021-12-15 14:07:23,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767506888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530385617] [2021-12-15 14:07:23,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,162 INFO L87 Difference]: Start difference. First operand 53 states and 85 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) [2021-12-15 14:07:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,172 INFO L93 Difference]: Finished difference Result 73 states and 112 transitions. [2021-12-15 14:07:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,172 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 [2021-12-15 14:07:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,173 INFO L225 Difference]: With dead ends: 73 [2021-12-15 14:07:23,173 INFO L226 Difference]: Without dead ends: 73 [2021-12-15 14:07:23,173 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 [2021-12-15 14:07:23,174 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 74 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 [2021-12-15 14:07:23,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 74 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-15 14:07:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-12-15 14:07:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.5857142857142856) internal successors, (111), 70 states have internal predecessors, (111), 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) [2021-12-15 14:07:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2021-12-15 14:07:23,179 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 13 [2021-12-15 14:07:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,179 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2021-12-15 14:07:23,179 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) [2021-12-15 14:07:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2021-12-15 14:07:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 14:07:23,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 14:07:23,181 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1268365854, now seen corresponding path program 1 times [2021-12-15 14:07:23,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093571723] [2021-12-15 14:07:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093571723] [2021-12-15 14:07:23,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093571723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363163000] [2021-12-15 14:07:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,218 INFO L87 Difference]: Start difference. First operand 71 states and 111 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) [2021-12-15 14:07:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,230 INFO L93 Difference]: Finished difference Result 75 states and 112 transitions. [2021-12-15 14:07:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,230 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 [2021-12-15 14:07:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,231 INFO L225 Difference]: With dead ends: 75 [2021-12-15 14:07:23,231 INFO L226 Difference]: Without dead ends: 75 [2021-12-15 14:07:23,232 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 [2021-12-15 14:07:23,232 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 76 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 [2021-12-15 14:07:23,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 76 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-15 14:07:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-12-15 14:07:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 72 states have internal predecessors, (111), 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) [2021-12-15 14:07:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2021-12-15 14:07:23,237 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 14 [2021-12-15 14:07:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,237 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2021-12-15 14:07:23,237 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) [2021-12-15 14:07:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2021-12-15 14:07:23,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 14:07:23,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 14:07:23,239 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash -588307484, now seen corresponding path program 1 times [2021-12-15 14:07:23,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631130011] [2021-12-15 14:07:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631130011] [2021-12-15 14:07:23,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631130011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528355374] [2021-12-15 14:07:23,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,263 INFO L87 Difference]: Start difference. First operand 73 states and 111 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) [2021-12-15 14:07:23,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,271 INFO L93 Difference]: Finished difference Result 135 states and 196 transitions. [2021-12-15 14:07:23,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,272 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 [2021-12-15 14:07:23,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,273 INFO L225 Difference]: With dead ends: 135 [2021-12-15 14:07:23,273 INFO L226 Difference]: Without dead ends: 135 [2021-12-15 14:07:23,273 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 [2021-12-15 14:07:23,275 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 67 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 [2021-12-15 14:07:23,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-15 14:07:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-12-15 14:07:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4772727272727273) internal successors, (195), 132 states have internal predecessors, (195), 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) [2021-12-15 14:07:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2021-12-15 14:07:23,292 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 14 [2021-12-15 14:07:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,292 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2021-12-15 14:07:23,293 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) [2021-12-15 14:07:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2021-12-15 14:07:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 14:07:23,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 14:07:23,294 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash 221039142, now seen corresponding path program 1 times [2021-12-15 14:07:23,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803811788] [2021-12-15 14:07:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803811788] [2021-12-15 14:07:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803811788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347433274] [2021-12-15 14:07:23,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,318 INFO L87 Difference]: Start difference. First operand 133 states and 195 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) [2021-12-15 14:07:23,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,328 INFO L93 Difference]: Finished difference Result 159 states and 232 transitions. [2021-12-15 14:07:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,328 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 [2021-12-15 14:07:23,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,330 INFO L225 Difference]: With dead ends: 159 [2021-12-15 14:07:23,330 INFO L226 Difference]: Without dead ends: 159 [2021-12-15 14:07:23,331 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 [2021-12-15 14:07:23,331 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 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 [2021-12-15 14:07:23,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-15 14:07:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2021-12-15 14:07:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.446969696969697) internal successors, (191), 132 states have internal predecessors, (191), 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) [2021-12-15 14:07:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2021-12-15 14:07:23,337 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 14 [2021-12-15 14:07:23,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,337 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2021-12-15 14:07:23,337 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) [2021-12-15 14:07:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2021-12-15 14:07:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 14:07:23,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 14:07:23,339 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1057447170, now seen corresponding path program 1 times [2021-12-15 14:07:23,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927876412] [2021-12-15 14:07:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927876412] [2021-12-15 14:07:23,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927876412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717852474] [2021-12-15 14:07:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,368 INFO L87 Difference]: Start difference. First operand 133 states and 191 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) [2021-12-15 14:07:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,376 INFO L93 Difference]: Finished difference Result 227 states and 320 transitions. [2021-12-15 14:07:23,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,376 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 [2021-12-15 14:07:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,377 INFO L225 Difference]: With dead ends: 227 [2021-12-15 14:07:23,378 INFO L226 Difference]: Without dead ends: 227 [2021-12-15 14:07:23,378 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 [2021-12-15 14:07:23,379 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 61 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 [2021-12-15 14:07:23,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-15 14:07:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2021-12-15 14:07:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.4114583333333333) internal successors, (271), 192 states have internal predecessors, (271), 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) [2021-12-15 14:07:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2021-12-15 14:07:23,386 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 15 [2021-12-15 14:07:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,386 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2021-12-15 14:07:23,386 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) [2021-12-15 14:07:23,386 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2021-12-15 14:07:23,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 14:07:23,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 14:07:23,408 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1866793796, now seen corresponding path program 1 times [2021-12-15 14:07:23,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290259592] [2021-12-15 14:07:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290259592] [2021-12-15 14:07:23,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290259592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370351285] [2021-12-15 14:07:23,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,443 INFO L87 Difference]: Start difference. First operand 193 states and 271 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) [2021-12-15 14:07:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,451 INFO L93 Difference]: Finished difference Result 251 states and 332 transitions. [2021-12-15 14:07:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,452 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 [2021-12-15 14:07:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,453 INFO L225 Difference]: With dead ends: 251 [2021-12-15 14:07:23,456 INFO L226 Difference]: Without dead ends: 251 [2021-12-15 14:07:23,456 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 [2021-12-15 14:07:23,457 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 20 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 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 [2021-12-15 14:07:23,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-15 14:07:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2021-12-15 14:07:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3346774193548387) internal successors, (331), 248 states have internal predecessors, (331), 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) [2021-12-15 14:07:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2021-12-15 14:07:23,463 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 331 transitions. Word has length 15 [2021-12-15 14:07:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,463 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 331 transitions. [2021-12-15 14:07:23,464 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) [2021-12-15 14:07:23,464 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 331 transitions. [2021-12-15 14:07:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 14:07:23,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 14:07:23,465 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1579092089, now seen corresponding path program 1 times [2021-12-15 14:07:23,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837003098] [2021-12-15 14:07:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837003098] [2021-12-15 14:07:23,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837003098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173870330] [2021-12-15 14:07:23,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,510 INFO L87 Difference]: Start difference. First operand 249 states and 331 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) [2021-12-15 14:07:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,517 INFO L93 Difference]: Finished difference Result 263 states and 340 transitions. [2021-12-15 14:07:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,518 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 [2021-12-15 14:07:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,519 INFO L225 Difference]: With dead ends: 263 [2021-12-15 14:07:23,519 INFO L226 Difference]: Without dead ends: 263 [2021-12-15 14:07:23,519 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 [2021-12-15 14:07:23,525 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 22 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 68 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 [2021-12-15 14:07:23,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 68 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-12-15 14:07:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2021-12-15 14:07:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.3038461538461539) internal successors, (339), 260 states have internal predecessors, (339), 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) [2021-12-15 14:07:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 339 transitions. [2021-12-15 14:07:23,531 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 339 transitions. Word has length 16 [2021-12-15 14:07:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,531 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 339 transitions. [2021-12-15 14:07:23,532 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) [2021-12-15 14:07:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 339 transitions. [2021-12-15 14:07:23,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 14:07:23,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 14:07:23,533 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2035816837, now seen corresponding path program 1 times [2021-12-15 14:07:23,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38639283] [2021-12-15 14:07:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38639283] [2021-12-15 14:07:23,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38639283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111250663] [2021-12-15 14:07:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,566 INFO L87 Difference]: Start difference. First operand 261 states and 339 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) [2021-12-15 14:07:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,574 INFO L93 Difference]: Finished difference Result 421 states and 523 transitions. [2021-12-15 14:07:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,574 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 [2021-12-15 14:07:23,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,576 INFO L225 Difference]: With dead ends: 421 [2021-12-15 14:07:23,576 INFO L226 Difference]: Without dead ends: 421 [2021-12-15 14:07:23,576 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 [2021-12-15 14:07:23,577 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 58 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 [2021-12-15 14:07:23,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 58 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-12-15 14:07:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 389. [2021-12-15 14:07:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.2654639175257731) internal successors, (491), 388 states have internal predecessors, (491), 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) [2021-12-15 14:07:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 491 transitions. [2021-12-15 14:07:23,584 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 491 transitions. Word has length 16 [2021-12-15 14:07:23,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,584 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 491 transitions. [2021-12-15 14:07:23,585 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) [2021-12-15 14:07:23,585 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2021-12-15 14:07:23,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 14:07:23,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:23,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 14:07:23,586 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:23,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1449803833, now seen corresponding path program 1 times [2021-12-15 14:07:23,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:23,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818903860] [2021-12-15 14:07:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:23,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:23,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818903860] [2021-12-15 14:07:23,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818903860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:23,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985983323] [2021-12-15 14:07:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:23,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,605 INFO L87 Difference]: Start difference. First operand 389 states and 491 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) [2021-12-15 14:07:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:23,613 INFO L93 Difference]: Finished difference Result 483 states and 562 transitions. [2021-12-15 14:07:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:23,614 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 [2021-12-15 14:07:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:23,614 INFO L225 Difference]: With dead ends: 483 [2021-12-15 14:07:23,614 INFO L226 Difference]: Without dead ends: 0 [2021-12-15 14:07:23,615 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 [2021-12-15 14:07:23,615 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 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 [2021-12-15 14:07:23,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:23,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-15 14:07:23,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-15 14:07:23,616 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) [2021-12-15 14:07:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-15 14:07:23,617 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-12-15 14:07:23,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:23,617 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 14:07:23,617 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) [2021-12-15 14:07:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-15 14:07:23,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-15 14:07:23,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-15 14:07:23,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-15 14:07:23,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 14:07:23,623 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:23,624 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 14:07:23,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 02:07:23 BoogieIcfgContainer [2021-12-15 14:07:23,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 14:07:23,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 14:07:23,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 14:07:23,627 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 14:07:23,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:22" (3/4) ... [2021-12-15 14:07:23,630 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-15 14:07:23,638 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-15 14:07:23,638 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-15 14:07:23,638 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-15 14:07:23,639 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-15 14:07:23,667 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 14:07:23,667 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 14:07:23,668 INFO L158 Benchmark]: Toolchain (without parser) took 1896.13ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 56.7MB in the end (delta: 23.9MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,668 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:23,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.11ms. Allocated memory is still 109.1MB. Free memory was 80.3MB in the beginning and 87.2MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.26ms. Allocated memory is still 109.1MB. Free memory was 87.2MB in the beginning and 85.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,669 INFO L158 Benchmark]: Boogie Preprocessor took 29.23ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.8MB in the end (delta: 940.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:23,669 INFO L158 Benchmark]: RCFGBuilder took 270.09ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 74.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,669 INFO L158 Benchmark]: TraceAbstraction took 1307.44ms. Allocated memory is still 109.1MB. Free memory was 73.7MB in the beginning and 59.4MB in the end (delta: 14.4MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,670 INFO L158 Benchmark]: Witness Printer took 40.41ms. Allocated memory is still 109.1MB. Free memory was 59.4MB in the beginning and 56.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:23,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.11ms. Allocated memory is still 109.1MB. Free memory was 80.3MB in the beginning and 87.2MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.26ms. Allocated memory is still 109.1MB. Free memory was 87.2MB in the beginning and 85.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.23ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.8MB in the end (delta: 940.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 270.09ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 74.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1307.44ms. Allocated memory is still 109.1MB. Free memory was 73.7MB in the beginning and 59.4MB in the end (delta: 14.4MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Witness Printer took 40.41ms. Allocated memory is still 109.1MB. Free memory was 59.4MB in the beginning and 56.7MB in the end (delta: 2.6MB). 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: 93]: 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, 26 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 292 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 997 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 354 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70 IncrementalHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 643 mSDtfsCounter, 70 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=14, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 136 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 342 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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! [2021-12-15 14:07:23,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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