./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/AutomizerReach.xml -i ../sv-benchmarks/c/locks/test_locks_5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:46:54,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:46:54,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:46:54,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:46:54,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:46:54,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:46:54,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:46:54,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:46:54,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:46:54,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:46:54,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:46:54,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:46:54,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:46:54,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:46:54,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:46:54,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:46:54,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:46:54,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:46:54,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:46:54,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:46:54,130 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:46:54,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:46:54,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:46:54,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:46:54,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:46:54,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:46:54,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:46:54,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:46:54,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:46:54,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:46:54,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:46:54,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:46:54,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:46:54,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:46:54,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:46:54,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:46:54,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:46:54,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:46:54,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:46:54,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:46:54,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:46:54,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:46:54,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:46:54,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:46:54,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:46:54,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:46:54,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:46:54,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:46:54,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:46:54,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:46:54,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:46:54,168 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:46:54,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:46:54,168 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:46:54,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:46:54,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:46:54,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:46:54,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:46:54,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:46:54,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:46:54,169 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:46:54,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:46:54,171 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:46:54,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:46:54,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:46:54,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:46:54,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:46:54,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:46:54,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:46:54,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:46:54,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:46:54,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:46:54,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:46:54,172 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:46:54,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:46:54,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:46:54,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 [2022-07-11 23:46:54,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:46:54,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:46:54,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:46:54,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:46:54,389 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:46:54,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2022-07-11 23:46:54,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d124e34a/ad3fc73f60ff48fb853de8b56afabb26/FLAG916b2b687 [2022-07-11 23:46:54,802 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:46:54,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2022-07-11 23:46:54,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d124e34a/ad3fc73f60ff48fb853de8b56afabb26/FLAG916b2b687 [2022-07-11 23:46:54,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d124e34a/ad3fc73f60ff48fb853de8b56afabb26 [2022-07-11 23:46:54,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:46:54,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:46:54,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:46:54,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:46:54,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:46:54,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:46:54" (1/1) ... [2022-07-11 23:46:54,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a10dd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:54, skipping insertion in model container [2022-07-11 23:46:54,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:46:54" (1/1) ... [2022-07-11 23:46:54,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:46:54,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:46:54,969 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] [2022-07-11 23:46:54,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:46:54,982 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:46:54,998 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] [2022-07-11 23:46:54,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:46:55,007 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:46:55,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55 WrapperNode [2022-07-11 23:46:55,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:46:55,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:46:55,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:46:55,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:46:55,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,028 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2022-07-11 23:46:55,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:46:55,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:46:55,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:46:55,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:46:55,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:46:55,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:46:55,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:46:55,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:46:55,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (1/1) ... [2022-07-11 23:46:55,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:46:55,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:46:55,076 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) [2022-07-11 23:46:55,082 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 [2022-07-11 23:46:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:46:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:46:55,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:46:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:46:55,144 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:46:55,145 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:46:55,242 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:46:55,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:46:55,247 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-11 23:46:55,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:46:55 BoogieIcfgContainer [2022-07-11 23:46:55,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:46:55,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:46:55,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:46:55,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:46:55,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:46:54" (1/3) ... [2022-07-11 23:46:55,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a516d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:46:55, skipping insertion in model container [2022-07-11 23:46:55,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:46:55" (2/3) ... [2022-07-11 23:46:55,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a516d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:46:55, skipping insertion in model container [2022-07-11 23:46:55,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:46:55" (3/3) ... [2022-07-11 23:46:55,276 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2022-07-11 23:46:55,287 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:46:55,287 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:46:55,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:46:55,368 INFO L357 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fe8a577, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1294ac62 [2022-07-11 23:46:55,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:46:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.826086956521739) internal successors, (42), 24 states have internal predecessors, (42), 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) [2022-07-11 23:46:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-11 23:46:55,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:55,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:55,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash -161811697, now seen corresponding path program 1 times [2022-07-11 23:46:55,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:55,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213136467] [2022-07-11 23:46:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:55,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:55,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:55,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213136467] [2022-07-11 23:46:55,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213136467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:55,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:55,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:55,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632746679] [2022-07-11 23:46:55,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:55,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:55,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:55,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:55,588 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.826086956521739) internal successors, (42), 24 states have internal predecessors, (42), 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 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) [2022-07-11 23:46:55,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:55,630 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2022-07-11 23:46:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:55,633 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 [2022-07-11 23:46:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:55,650 INFO L225 Difference]: With dead ends: 53 [2022-07-11 23:46:55,650 INFO L226 Difference]: Without dead ends: 39 [2022-07-11 23:46:55,653 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:55,658 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:46:55,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:55,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-11 23:46:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2022-07-11 23:46:55,688 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) [2022-07-11 23:46:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2022-07-11 23:46:55,690 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 12 [2022-07-11 23:46:55,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:55,692 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2022-07-11 23:46:55,692 INFO L496 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) [2022-07-11 23:46:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2022-07-11 23:46:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-11 23:46:55,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:55,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:55,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:46:55,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash -971158323, now seen corresponding path program 1 times [2022-07-11 23:46:55,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:55,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872155817] [2022-07-11 23:46:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:55,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:55,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:55,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872155817] [2022-07-11 23:46:55,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872155817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:55,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:55,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:55,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74029383] [2022-07-11 23:46:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:55,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:55,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:55,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:55,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:55,759 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) [2022-07-11 23:46:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:55,783 INFO L93 Difference]: Finished difference Result 64 states and 109 transitions. [2022-07-11 23:46:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:55,783 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 [2022-07-11 23:46:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:55,784 INFO L225 Difference]: With dead ends: 64 [2022-07-11 23:46:55,784 INFO L226 Difference]: Without dead ends: 39 [2022-07-11 23:46:55,788 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:55,789 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:55,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 73 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:55,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-11 23:46:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2022-07-11 23:46:55,796 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) [2022-07-11 23:46:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2022-07-11 23:46:55,797 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 12 [2022-07-11 23:46:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:55,798 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2022-07-11 23:46:55,799 INFO L496 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) [2022-07-11 23:46:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2022-07-11 23:46:55,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-11 23:46:55,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:55,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:55,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 23:46:55,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -720980343, now seen corresponding path program 1 times [2022-07-11 23:46:55,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:55,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391127851] [2022-07-11 23:46:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:55,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:55,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391127851] [2022-07-11 23:46:55,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391127851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:55,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:55,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:55,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596059444] [2022-07-11 23:46:55,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:55,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:55,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:55,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:55,844 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) [2022-07-11 23:46:55,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:55,856 INFO L93 Difference]: Finished difference Result 60 states and 96 transitions. [2022-07-11 23:46:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:55,856 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 [2022-07-11 23:46:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:55,857 INFO L225 Difference]: With dead ends: 60 [2022-07-11 23:46:55,857 INFO L226 Difference]: Without dead ends: 42 [2022-07-11 23:46:55,857 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:55,858 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:55,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 80 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-11 23:46:55,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2022-07-11 23:46:55,861 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) [2022-07-11 23:46:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 64 transitions. [2022-07-11 23:46:55,862 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 64 transitions. Word has length 13 [2022-07-11 23:46:55,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:55,862 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 64 transitions. [2022-07-11 23:46:55,862 INFO L496 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) [2022-07-11 23:46:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 64 transitions. [2022-07-11 23:46:55,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-11 23:46:55,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:55,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:55,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 23:46:55,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:55,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:55,864 INFO L85 PathProgramCache]: Analyzing trace with hash -40921973, now seen corresponding path program 1 times [2022-07-11 23:46:55,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:55,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686894863] [2022-07-11 23:46:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:55,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:55,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:55,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686894863] [2022-07-11 23:46:55,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686894863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:55,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:55,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:55,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565600666] [2022-07-11 23:46:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:55,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:55,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:55,900 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) [2022-07-11 23:46:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:55,909 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2022-07-11 23:46:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:55,909 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 [2022-07-11 23:46:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:55,910 INFO L225 Difference]: With dead ends: 73 [2022-07-11 23:46:55,910 INFO L226 Difference]: Without dead ends: 71 [2022-07-11 23:46:55,910 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:55,911 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:55,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:55,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-11 23:46:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2022-07-11 23:46:55,916 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) [2022-07-11 23:46:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2022-07-11 23:46:55,917 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 85 transitions. Word has length 13 [2022-07-11 23:46:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:55,917 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 85 transitions. [2022-07-11 23:46:55,917 INFO L496 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) [2022-07-11 23:46:55,917 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 85 transitions. [2022-07-11 23:46:55,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-11 23:46:55,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:55,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:55,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-11 23:46:55,918 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:55,919 INFO L85 PathProgramCache]: Analyzing trace with hash -850268599, now seen corresponding path program 1 times [2022-07-11 23:46:55,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:55,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47553645] [2022-07-11 23:46:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:55,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:55,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:55,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47553645] [2022-07-11 23:46:55,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47553645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:55,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:55,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:55,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84206302] [2022-07-11 23:46:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:55,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:55,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:55,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:55,949 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) [2022-07-11 23:46:55,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:55,959 INFO L93 Difference]: Finished difference Result 121 states and 195 transitions. [2022-07-11 23:46:55,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:55,959 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 [2022-07-11 23:46:55,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:55,960 INFO L225 Difference]: With dead ends: 121 [2022-07-11 23:46:55,960 INFO L226 Difference]: Without dead ends: 73 [2022-07-11 23:46:55,961 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:55,961 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:55,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 74 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:55,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-11 23:46:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-07-11 23:46:55,966 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) [2022-07-11 23:46:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2022-07-11 23:46:55,967 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 13 [2022-07-11 23:46:55,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:55,968 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2022-07-11 23:46:55,968 INFO L496 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) [2022-07-11 23:46:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2022-07-11 23:46:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-11 23:46:55,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:55,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:55,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-11 23:46:55,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:55,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:55,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1268365854, now seen corresponding path program 1 times [2022-07-11 23:46:55,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:55,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471041504] [2022-07-11 23:46:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:55,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:55,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:55,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471041504] [2022-07-11 23:46:55,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471041504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:55,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:55,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:55,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961982696] [2022-07-11 23:46:55,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:55,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:55,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:55,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:55,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:55,991 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) [2022-07-11 23:46:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:56,004 INFO L93 Difference]: Finished difference Result 108 states and 166 transitions. [2022-07-11 23:46:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:56,005 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 [2022-07-11 23:46:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:56,005 INFO L225 Difference]: With dead ends: 108 [2022-07-11 23:46:56,005 INFO L226 Difference]: Without dead ends: 75 [2022-07-11 23:46:56,006 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:56,006 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:56,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 76 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:56,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-11 23:46:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2022-07-11 23:46:56,011 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) [2022-07-11 23:46:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2022-07-11 23:46:56,012 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 14 [2022-07-11 23:46:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:56,012 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2022-07-11 23:46:56,012 INFO L496 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) [2022-07-11 23:46:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2022-07-11 23:46:56,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-11 23:46:56,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:56,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:56,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-11 23:46:56,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:56,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:56,014 INFO L85 PathProgramCache]: Analyzing trace with hash -588307484, now seen corresponding path program 1 times [2022-07-11 23:46:56,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:56,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054697228] [2022-07-11 23:46:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:56,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:56,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054697228] [2022-07-11 23:46:56,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054697228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:56,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:56,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:56,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65688608] [2022-07-11 23:46:56,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:56,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:56,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:56,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:56,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:56,037 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) [2022-07-11 23:46:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:56,056 INFO L93 Difference]: Finished difference Result 201 states and 305 transitions. [2022-07-11 23:46:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:56,057 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 [2022-07-11 23:46:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:56,057 INFO L225 Difference]: With dead ends: 201 [2022-07-11 23:46:56,058 INFO L226 Difference]: Without dead ends: 135 [2022-07-11 23:46:56,058 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:56,059 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:56,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-11 23:46:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2022-07-11 23:46:56,065 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) [2022-07-11 23:46:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2022-07-11 23:46:56,066 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 14 [2022-07-11 23:46:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:56,066 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2022-07-11 23:46:56,066 INFO L496 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) [2022-07-11 23:46:56,066 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2022-07-11 23:46:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-11 23:46:56,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:56,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:56,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-11 23:46:56,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:56,068 INFO L85 PathProgramCache]: Analyzing trace with hash 221039142, now seen corresponding path program 1 times [2022-07-11 23:46:56,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:56,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665643362] [2022-07-11 23:46:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:56,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:56,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:56,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665643362] [2022-07-11 23:46:56,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665643362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:56,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:56,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:56,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215141943] [2022-07-11 23:46:56,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:56,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:56,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:56,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:56,086 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) [2022-07-11 23:46:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:56,093 INFO L93 Difference]: Finished difference Result 161 states and 237 transitions. [2022-07-11 23:46:56,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:56,093 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 [2022-07-11 23:46:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:56,094 INFO L225 Difference]: With dead ends: 161 [2022-07-11 23:46:56,094 INFO L226 Difference]: Without dead ends: 159 [2022-07-11 23:46:56,094 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:56,095 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:56,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-07-11 23:46:56,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2022-07-11 23:46:56,101 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) [2022-07-11 23:46:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2022-07-11 23:46:56,102 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 14 [2022-07-11 23:46:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:56,102 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2022-07-11 23:46:56,102 INFO L496 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) [2022-07-11 23:46:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2022-07-11 23:46:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-11 23:46:56,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:56,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:56,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-11 23:46:56,103 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:56,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1057447170, now seen corresponding path program 1 times [2022-07-11 23:46:56,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:56,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020779123] [2022-07-11 23:46:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:56,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:56,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:56,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020779123] [2022-07-11 23:46:56,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020779123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:56,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:56,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:56,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762784928] [2022-07-11 23:46:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:56,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:56,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:56,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:56,126 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) [2022-07-11 23:46:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:56,137 INFO L93 Difference]: Finished difference Result 229 states and 329 transitions. [2022-07-11 23:46:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:56,138 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 [2022-07-11 23:46:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:56,139 INFO L225 Difference]: With dead ends: 229 [2022-07-11 23:46:56,139 INFO L226 Difference]: Without dead ends: 227 [2022-07-11 23:46:56,140 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:56,140 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:56,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:56,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-07-11 23:46:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2022-07-11 23:46:56,149 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) [2022-07-11 23:46:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2022-07-11 23:46:56,151 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 15 [2022-07-11 23:46:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:56,151 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2022-07-11 23:46:56,151 INFO L496 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) [2022-07-11 23:46:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2022-07-11 23:46:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-11 23:46:56,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:56,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:56,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-11 23:46:56,153 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:56,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:56,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1866793796, now seen corresponding path program 1 times [2022-07-11 23:46:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:56,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808639368] [2022-07-11 23:46:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:56,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:56,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:56,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808639368] [2022-07-11 23:46:56,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808639368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:56,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:56,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:56,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435215275] [2022-07-11 23:46:56,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:56,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:56,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:56,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:56,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:56,174 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) [2022-07-11 23:46:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:56,186 INFO L93 Difference]: Finished difference Result 437 states and 609 transitions. [2022-07-11 23:46:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:56,186 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 [2022-07-11 23:46:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:56,187 INFO L225 Difference]: With dead ends: 437 [2022-07-11 23:46:56,187 INFO L226 Difference]: Without dead ends: 251 [2022-07-11 23:46:56,188 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:56,189 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:56,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:56,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-11 23:46:56,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2022-07-11 23:46:56,197 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) [2022-07-11 23:46:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2022-07-11 23:46:56,198 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 331 transitions. Word has length 15 [2022-07-11 23:46:56,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:56,198 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 331 transitions. [2022-07-11 23:46:56,198 INFO L496 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) [2022-07-11 23:46:56,198 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 331 transitions. [2022-07-11 23:46:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-11 23:46:56,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:56,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:56,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-11 23:46:56,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1579092089, now seen corresponding path program 1 times [2022-07-11 23:46:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:56,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034074042] [2022-07-11 23:46:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:56,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:56,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:56,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034074042] [2022-07-11 23:46:56,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034074042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:56,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:56,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:56,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569499778] [2022-07-11 23:46:56,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:56,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:56,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:56,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:56,216 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) [2022-07-11 23:46:56,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:56,224 INFO L93 Difference]: Finished difference Result 381 states and 505 transitions. [2022-07-11 23:46:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:56,224 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 [2022-07-11 23:46:56,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:56,225 INFO L225 Difference]: With dead ends: 381 [2022-07-11 23:46:56,225 INFO L226 Difference]: Without dead ends: 263 [2022-07-11 23:46:56,226 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:56,226 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:56,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 68 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-11 23:46:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2022-07-11 23:46:56,238 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) [2022-07-11 23:46:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 339 transitions. [2022-07-11 23:46:56,239 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 339 transitions. Word has length 16 [2022-07-11 23:46:56,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:56,239 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 339 transitions. [2022-07-11 23:46:56,239 INFO L496 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) [2022-07-11 23:46:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 339 transitions. [2022-07-11 23:46:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-11 23:46:56,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:56,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:56,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-11 23:46:56,240 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:56,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:56,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2035816837, now seen corresponding path program 1 times [2022-07-11 23:46:56,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:56,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087881139] [2022-07-11 23:46:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:56,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:56,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:56,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087881139] [2022-07-11 23:46:56,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087881139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:56,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:56,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431285898] [2022-07-11 23:46:56,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:56,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:56,258 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) [2022-07-11 23:46:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:56,270 INFO L93 Difference]: Finished difference Result 423 states and 540 transitions. [2022-07-11 23:46:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:56,270 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 [2022-07-11 23:46:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:56,271 INFO L225 Difference]: With dead ends: 423 [2022-07-11 23:46:56,271 INFO L226 Difference]: Without dead ends: 421 [2022-07-11 23:46:56,272 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:56,272 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:56,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 58 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-07-11 23:46:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 389. [2022-07-11 23:46:56,280 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) [2022-07-11 23:46:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 491 transitions. [2022-07-11 23:46:56,281 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 491 transitions. Word has length 16 [2022-07-11 23:46:56,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:56,281 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 491 transitions. [2022-07-11 23:46:56,281 INFO L496 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) [2022-07-11 23:46:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2022-07-11 23:46:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-11 23:46:56,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:46:56,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:56,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-11 23:46:56,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:46:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:46:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1449803833, now seen corresponding path program 1 times [2022-07-11 23:46:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:46:56,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256514254] [2022-07-11 23:46:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:46:56,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:46:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:46:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:46:56,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:46:56,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256514254] [2022-07-11 23:46:56,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256514254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:46:56,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:46:56,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:46:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971466801] [2022-07-11 23:46:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:46:56,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:46:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:46:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:46:56,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:46:56,297 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) [2022-07-11 23:46:56,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:46:56,310 INFO L93 Difference]: Finished difference Result 853 states and 1051 transitions. [2022-07-11 23:46:56,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:46:56,310 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 [2022-07-11 23:46:56,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:46:56,310 INFO L225 Difference]: With dead ends: 853 [2022-07-11 23:46:56,310 INFO L226 Difference]: Without dead ends: 0 [2022-07-11 23:46:56,313 INFO L412 NwaCegarLoop]: 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 [2022-07-11 23:46:56,314 INFO L413 NwaCegarLoop]: 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 [2022-07-11 23:46:56,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:46:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-11 23:46:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-11 23:46:56,315 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) [2022-07-11 23:46:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-11 23:46:56,315 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-07-11 23:46:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:46:56,315 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-11 23:46:56,315 INFO L496 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) [2022-07-11 23:46:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-11 23:46:56,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-11 23:46:56,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-11 23:46:56,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-11 23:46:56,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-11 23:46:56,326 INFO L902 garLoopResultBuilder]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2022-07-11 23:46:56,326 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2022-07-11 23:46:56,326 INFO L899 garLoopResultBuilder]: For program point L65-1(lines 26 90) no Hoare annotation was computed. [2022-07-11 23:46:56,326 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-11 23:46:56,327 INFO L902 garLoopResultBuilder]: At program point L94(lines 6 95) the Hoare annotation is: true [2022-07-11 23:46:56,327 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-11 23:46:56,327 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-11 23:46:56,327 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-07-11 23:46:56,327 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2022-07-11 23:46:56,327 INFO L899 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2022-07-11 23:46:56,327 INFO L895 garLoopResultBuilder]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2022-07-11 23:46:56,327 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 26 90) no Hoare annotation was computed. [2022-07-11 23:46:56,328 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2022-07-11 23:46:56,328 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-11 23:46:56,328 INFO L902 garLoopResultBuilder]: At program point L91(lines 7 95) the Hoare annotation is: true [2022-07-11 23:46:56,328 INFO L899 garLoopResultBuilder]: For program point L75-1(lines 26 90) no Hoare annotation was computed. [2022-07-11 23:46:56,328 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2022-07-11 23:46:56,328 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 26 90) no Hoare annotation was computed. [2022-07-11 23:46:56,328 INFO L899 garLoopResultBuilder]: For program point L55-1(lines 26 90) no Hoare annotation was computed. [2022-07-11 23:46:56,328 INFO L899 garLoopResultBuilder]: For program point L51-1(lines 26 90) no Hoare annotation was computed. [2022-07-11 23:46:56,328 INFO L899 garLoopResultBuilder]: For program point L80-1(lines 26 90) no Hoare annotation was computed. [2022-07-11 23:46:56,329 INFO L899 garLoopResultBuilder]: For program point L47-1(lines 26 90) no Hoare annotation was computed. [2022-07-11 23:46:56,329 INFO L899 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2022-07-11 23:46:56,329 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2022-07-11 23:46:56,329 INFO L899 garLoopResultBuilder]: For program point L43-2(lines 26 90) no Hoare annotation was computed. [2022-07-11 23:46:56,333 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:46:56,335 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-11 23:46:56,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 11:46:56 BoogieIcfgContainer [2022-07-11 23:46:56,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-11 23:46:56,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-11 23:46:56,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-11 23:46:56,345 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-11 23:46:56,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:46:55" (3/4) ... [2022-07-11 23:46:56,348 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-11 23:46:56,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-11 23:46:56,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-11 23:46:56,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-11 23:46:56,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-11 23:46:56,387 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-11 23:46:56,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-11 23:46:56,388 INFO L158 Benchmark]: Toolchain (without parser) took 1565.62ms. Allocated memory was 113.2MB in the beginning and 159.4MB in the end (delta: 46.1MB). Free memory was 84.8MB in the beginning and 108.8MB in the end (delta: -24.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-07-11 23:46:56,389 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 23:46:56,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.44ms. Allocated memory was 113.2MB in the beginning and 159.4MB in the end (delta: 46.1MB). Free memory was 84.6MB in the beginning and 133.8MB in the end (delta: -49.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-11 23:46:56,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.80ms. Allocated memory is still 159.4MB. Free memory was 133.8MB in the beginning and 132.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 23:46:56,390 INFO L158 Benchmark]: Boogie Preprocessor took 21.22ms. Allocated memory is still 159.4MB. Free memory was 132.2MB in the beginning and 131.3MB in the end (delta: 839.2kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-11 23:46:56,390 INFO L158 Benchmark]: RCFGBuilder took 202.96ms. Allocated memory is still 159.4MB. Free memory was 131.3MB in the beginning and 120.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-11 23:46:56,390 INFO L158 Benchmark]: TraceAbstraction took 1074.00ms. Allocated memory is still 159.4MB. Free memory was 120.4MB in the beginning and 112.1MB in the end (delta: 8.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2022-07-11 23:46:56,390 INFO L158 Benchmark]: Witness Printer took 43.12ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 108.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-11 23:46:56,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.44ms. Allocated memory was 113.2MB in the beginning and 159.4MB in the end (delta: 46.1MB). Free memory was 84.6MB in the beginning and 133.8MB in the end (delta: -49.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.80ms. Allocated memory is still 159.4MB. Free memory was 133.8MB in the beginning and 132.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.22ms. Allocated memory is still 159.4MB. Free memory was 132.2MB in the beginning and 131.3MB in the end (delta: 839.2kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 202.96ms. Allocated memory is still 159.4MB. Free memory was 131.3MB in the beginning and 120.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1074.00ms. Allocated memory is still 159.4MB. Free memory was 120.4MB in the beginning and 112.1MB in the end (delta: 8.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Witness Printer took 43.12ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 108.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. 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]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 264 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 932 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 358 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 574 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=12, InterpolantAutomatonStates: 39, 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, 13 MinimizatonAttempts, 136 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 41 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-07-11 23:46:56,419 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