./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test/easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test/easy6.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 dbfb10bed59bd9571e8fb81e7de27768a48dfd88 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-04 18:26:58,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-04 18:26:58,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-04 18:26:58,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-04 18:26:58,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-04 18:26:58,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-04 18:26:58,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-04 18:26:58,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-04 18:26:58,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-04 18:26:58,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-04 18:26:58,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-04 18:26:58,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-04 18:26:58,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-04 18:26:58,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-04 18:26:58,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-04 18:26:58,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-04 18:26:58,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-04 18:26:58,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-04 18:26:58,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-04 18:26:58,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-04 18:26:58,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-04 18:26:58,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-04 18:26:58,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-04 18:26:58,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-04 18:26:58,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-04 18:26:58,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-04 18:26:58,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-04 18:26:58,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-04 18:26:58,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-04 18:26:58,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-04 18:26:58,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-04 18:26:58,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-04 18:26:58,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-04 18:26:58,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-04 18:26:58,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-04 18:26:58,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-04 18:26:58,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-04 18:26:58,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-04 18:26:58,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-04 18:26:58,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-04 18:26:58,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-04 18:26:58,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-04 18:26:58,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-04 18:26:58,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-04 18:26:58,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-04 18:26:58,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-04 18:26:58,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-04 18:26:58,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-04 18:26:58,450 INFO L138 SettingsManager]: * Use SBE=true [2021-10-04 18:26:58,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-04 18:26:58,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-04 18:26:58,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-04 18:26:58,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-04 18:26:58,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-04 18:26:58,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-04 18:26:58,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-04 18:26:58,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-04 18:26:58,453 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-04 18:26:58,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-04 18:26:58,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-04 18:26:58,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-04 18:26:58,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-04 18:26:58,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-04 18:26:58,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-04 18:26:58,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:26:58,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-04 18:26:58,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-04 18:26:58,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-04 18:26:58,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-04 18:26:58,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-04 18:26:58,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-04 18:26:58,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-04 18:26:58,457 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbfb10bed59bd9571e8fb81e7de27768a48dfd88 [2021-10-04 18:26:58,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-04 18:26:58,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-04 18:26:58,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-04 18:26:58,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-04 18:26:58,899 INFO L275 PluginConnector]: CDTParser initialized [2021-10-04 18:26:58,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test/easy6.wvr.c [2021-10-04 18:26:58,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/880e44e47/19158825c3494966bcad5653c53f6d0d/FLAG59080b6ba [2021-10-04 18:26:59,748 INFO L306 CDTParser]: Found 1 translation units. [2021-10-04 18:26:59,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/easy6.wvr.c [2021-10-04 18:26:59,751 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:26:59,751 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:26:59,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/880e44e47/19158825c3494966bcad5653c53f6d0d/FLAG59080b6ba [2021-10-04 18:27:00,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/880e44e47/19158825c3494966bcad5653c53f6d0d [2021-10-04 18:27:00,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-04 18:27:00,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-04 18:27:00,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-04 18:27:00,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-04 18:27:00,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-04 18:27:00,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324bf8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00, skipping insertion in model container [2021-10-04 18:27:00,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-04 18:27:00,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-04 18:27:00,318 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:27:00,361 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/easy6.wvr.c[997,1010] [2021-10-04 18:27:00,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:27:00,378 INFO L203 MainTranslator]: Completed pre-run [2021-10-04 18:27:00,391 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:27:00,402 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/easy6.wvr.c[997,1010] [2021-10-04 18:27:00,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:27:00,424 INFO L208 MainTranslator]: Completed translation [2021-10-04 18:27:00,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00 WrapperNode [2021-10-04 18:27:00,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-04 18:27:00,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-04 18:27:00,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-04 18:27:00,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-04 18:27:00,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-04 18:27:00,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-04 18:27:00,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-04 18:27:00,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-04 18:27:00,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-04 18:27:00,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-04 18:27:00,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-04 18:27:00,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-04 18:27:00,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (1/1) ... [2021-10-04 18:27:00,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:27:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-04 18:27:00,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-04 18:27:00,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-04 18:27:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-04 18:27:00,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-04 18:27:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-04 18:27:00,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-04 18:27:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-04 18:27:00,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-04 18:27:00,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-04 18:27:00,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-04 18:27:00,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-04 18:27:00,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-04 18:27:00,700 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-04 18:27:01,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-04 18:27:01,169 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-04 18:27:01,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:27:01 BoogieIcfgContainer [2021-10-04 18:27:01,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-04 18:27:01,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-04 18:27:01,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-04 18:27:01,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-04 18:27:01,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.10 06:27:00" (1/3) ... [2021-10-04 18:27:01,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bacb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:27:01, skipping insertion in model container [2021-10-04 18:27:01,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:27:00" (2/3) ... [2021-10-04 18:27:01,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bacb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:27:01, skipping insertion in model container [2021-10-04 18:27:01,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:27:01" (3/3) ... [2021-10-04 18:27:01,206 INFO L111 eAbstractionObserver]: Analyzing ICFG easy6.wvr.c [2021-10-04 18:27:01,215 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-04 18:27:01,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-04 18:27:01,216 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-04 18:27:01,216 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-04 18:27:01,250 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,251 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,251 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,251 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,252 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,252 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,252 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,253 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,253 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,253 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,254 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,254 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,254 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,255 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,255 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,255 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,256 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,256 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,256 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,257 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,257 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,257 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,258 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,258 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,259 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,260 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,261 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,261 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,261 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,262 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,264 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,266 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,266 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,266 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,267 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,267 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,267 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,273 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,273 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,273 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,280 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,280 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,280 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,281 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:27:01,297 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-04 18:27:01,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-04 18:27:01,389 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-04 18:27:01,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-04 18:27:01,418 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-04 18:27:01,443 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 88 transitions, 192 flow [2021-10-04 18:27:01,448 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 88 transitions, 192 flow [2021-10-04 18:27:01,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 88 transitions, 192 flow [2021-10-04 18:27:01,553 INFO L129 PetriNetUnfolder]: 5/86 cut-off events. [2021-10-04 18:27:01,554 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-04 18:27:01,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 5/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2021-10-04 18:27:01,566 INFO L116 LiptonReduction]: Number of co-enabled transitions 1400 [2021-10-04 18:27:03,550 INFO L131 LiptonReduction]: Checked pairs total: 6243 [2021-10-04 18:27:03,551 INFO L133 LiptonReduction]: Total number of compositions: 74 [2021-10-04 18:27:03,562 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 31 transitions, 78 flow [2021-10-04 18:27:03,591 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 244 states, 243 states have (on average 2.3127572016460904) internal successors, (562), 243 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 243 states have (on average 2.3127572016460904) internal successors, (562), 243 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:03,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-04 18:27:03,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:27:03,611 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:27:03,611 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:27:03,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:27:03,617 INFO L82 PathProgramCache]: Analyzing trace with hash 40728269, now seen corresponding path program 1 times [2021-10-04 18:27:03,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:27:03,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630975055] [2021-10-04 18:27:03,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:27:03,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:27:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:27:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:27:03,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:27:03,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630975055] [2021-10-04 18:27:03,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630975055] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:27:03,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:27:03,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-04 18:27:03,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655922630] [2021-10-04 18:27:03,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-04 18:27:03,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:27:03,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-04 18:27:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-04 18:27:03,850 INFO L87 Difference]: Start difference. First operand has 244 states, 243 states have (on average 2.3127572016460904) internal successors, (562), 243 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:27:03,876 INFO L93 Difference]: Finished difference Result 244 states and 540 transitions. [2021-10-04 18:27:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-04 18:27:03,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2021-10-04 18:27:03,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:27:03,893 INFO L225 Difference]: With dead ends: 244 [2021-10-04 18:27:03,895 INFO L226 Difference]: Without dead ends: 244 [2021-10-04 18:27:03,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-04 18:27:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-04 18:27:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-10-04 18:27:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.2222222222222223) internal successors, (540), 243 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 540 transitions. [2021-10-04 18:27:04,003 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 540 transitions. Word has length 19 [2021-10-04 18:27:04,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:27:04,004 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 540 transitions. [2021-10-04 18:27:04,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:04,006 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 540 transitions. [2021-10-04 18:27:04,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-04 18:27:04,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:27:04,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:27:04,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-04 18:27:04,017 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:27:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:27:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash 144355811, now seen corresponding path program 1 times [2021-10-04 18:27:04,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:27:04,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074086577] [2021-10-04 18:27:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:27:04,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:27:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:27:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:27:04,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:27:04,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074086577] [2021-10-04 18:27:04,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074086577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:27:04,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:27:04,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-04 18:27:04,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079199292] [2021-10-04 18:27:04,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-04 18:27:04,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:27:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-04 18:27:04,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:27:04,332 INFO L87 Difference]: Start difference. First operand 244 states and 540 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:04,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:27:04,434 INFO L93 Difference]: Finished difference Result 295 states and 619 transitions. [2021-10-04 18:27:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-04 18:27:04,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 27 [2021-10-04 18:27:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:27:04,438 INFO L225 Difference]: With dead ends: 295 [2021-10-04 18:27:04,438 INFO L226 Difference]: Without dead ends: 230 [2021-10-04 18:27:04,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 75.1ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-04 18:27:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-04 18:27:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 198. [2021-10-04 18:27:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.203045685279188) internal successors, (434), 197 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 434 transitions. [2021-10-04 18:27:04,453 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 434 transitions. Word has length 27 [2021-10-04 18:27:04,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:27:04,454 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 434 transitions. [2021-10-04 18:27:04,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:04,454 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 434 transitions. [2021-10-04 18:27:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-04 18:27:04,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:27:04,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:27:04,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-04 18:27:04,457 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:27:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:27:04,457 INFO L82 PathProgramCache]: Analyzing trace with hash -864059851, now seen corresponding path program 2 times [2021-10-04 18:27:04,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:27:04,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668828398] [2021-10-04 18:27:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:27:04,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:27:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:27:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:27:04,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:27:04,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668828398] [2021-10-04 18:27:04,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668828398] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:27:04,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:27:04,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-04 18:27:04,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191930442] [2021-10-04 18:27:04,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-04 18:27:04,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:27:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-04 18:27:04,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:27:04,688 INFO L87 Difference]: Start difference. First operand 198 states and 434 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:27:04,872 INFO L93 Difference]: Finished difference Result 352 states and 761 transitions. [2021-10-04 18:27:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-04 18:27:04,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2021-10-04 18:27:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:27:04,877 INFO L225 Difference]: With dead ends: 352 [2021-10-04 18:27:04,877 INFO L226 Difference]: Without dead ends: 272 [2021-10-04 18:27:04,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 104.2ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-04 18:27:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-04 18:27:04,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 168. [2021-10-04 18:27:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.179640718562874) internal successors, (364), 167 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 364 transitions. [2021-10-04 18:27:04,908 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 364 transitions. Word has length 27 [2021-10-04 18:27:04,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:27:04,909 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 364 transitions. [2021-10-04 18:27:04,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 364 transitions. [2021-10-04 18:27:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-04 18:27:04,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:27:04,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:27:04,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-04 18:27:04,913 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:27:04,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:27:04,915 INFO L82 PathProgramCache]: Analyzing trace with hash 172066387, now seen corresponding path program 3 times [2021-10-04 18:27:04,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:27:04,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510924249] [2021-10-04 18:27:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:27:04,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:27:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:27:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:27:04,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:27:04,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510924249] [2021-10-04 18:27:04,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510924249] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:27:04,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:27:04,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-04 18:27:04,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218488293] [2021-10-04 18:27:04,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:27:04,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:27:04,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:27:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:27:04,997 INFO L87 Difference]: Start difference. First operand 168 states and 364 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:27:05,030 INFO L93 Difference]: Finished difference Result 172 states and 360 transitions. [2021-10-04 18:27:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:27:05,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2021-10-04 18:27:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:27:05,033 INFO L225 Difference]: With dead ends: 172 [2021-10-04 18:27:05,033 INFO L226 Difference]: Without dead ends: 156 [2021-10-04 18:27:05,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:27:05,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-04 18:27:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-10-04 18:27:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.1548387096774193) internal successors, (334), 155 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 334 transitions. [2021-10-04 18:27:05,040 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 334 transitions. Word has length 27 [2021-10-04 18:27:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:27:05,041 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 334 transitions. [2021-10-04 18:27:05,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 334 transitions. [2021-10-04 18:27:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-04 18:27:05,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:27:05,043 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:27:05,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-04 18:27:05,044 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:27:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:27:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2095616885, now seen corresponding path program 4 times [2021-10-04 18:27:05,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:27:05,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699190576] [2021-10-04 18:27:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:27:05,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:27:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:27:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:27:05,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:27:05,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699190576] [2021-10-04 18:27:05,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699190576] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:27:05,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:27:05,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-04 18:27:05,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941269976] [2021-10-04 18:27:05,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-04 18:27:05,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:27:05,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-04 18:27:05,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:27:05,229 INFO L87 Difference]: Start difference. First operand 156 states and 334 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:27:05,386 INFO L93 Difference]: Finished difference Result 288 states and 608 transitions. [2021-10-04 18:27:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-04 18:27:05,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2021-10-04 18:27:05,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:27:05,389 INFO L225 Difference]: With dead ends: 288 [2021-10-04 18:27:05,389 INFO L226 Difference]: Without dead ends: 250 [2021-10-04 18:27:05,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-04 18:27:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-04 18:27:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 152. [2021-10-04 18:27:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.1456953642384105) internal successors, (324), 151 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 324 transitions. [2021-10-04 18:27:05,398 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 324 transitions. Word has length 27 [2021-10-04 18:27:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:27:05,398 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 324 transitions. [2021-10-04 18:27:05,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 324 transitions. [2021-10-04 18:27:05,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-04 18:27:05,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:27:05,400 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:27:05,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-04 18:27:05,401 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:27:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:27:05,401 INFO L82 PathProgramCache]: Analyzing trace with hash -909055917, now seen corresponding path program 5 times [2021-10-04 18:27:05,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:27:05,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361223585] [2021-10-04 18:27:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:27:05,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:27:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:27:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:27:05,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:27:05,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361223585] [2021-10-04 18:27:05,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361223585] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:27:05,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:27:05,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-04 18:27:05,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893131776] [2021-10-04 18:27:05,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-04 18:27:05,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:27:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-04 18:27:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:27:05,531 INFO L87 Difference]: Start difference. First operand 152 states and 324 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:27:05,658 INFO L93 Difference]: Finished difference Result 260 states and 544 transitions. [2021-10-04 18:27:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-04 18:27:05,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2021-10-04 18:27:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:27:05,660 INFO L225 Difference]: With dead ends: 260 [2021-10-04 18:27:05,661 INFO L226 Difference]: Without dead ends: 226 [2021-10-04 18:27:05,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-04 18:27:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-04 18:27:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 158. [2021-10-04 18:27:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.121019108280255) internal successors, (333), 157 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 333 transitions. [2021-10-04 18:27:05,668 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 333 transitions. Word has length 27 [2021-10-04 18:27:05,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:27:05,669 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 333 transitions. [2021-10-04 18:27:05,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 333 transitions. [2021-10-04 18:27:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-04 18:27:05,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:27:05,671 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:27:05,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-04 18:27:05,671 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:27:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:27:05,672 INFO L82 PathProgramCache]: Analyzing trace with hash -871901069, now seen corresponding path program 6 times [2021-10-04 18:27:05,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:27:05,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014427548] [2021-10-04 18:27:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:27:05,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:27:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:27:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:27:05,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:27:05,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014427548] [2021-10-04 18:27:05,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014427548] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:27:05,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:27:05,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-04 18:27:05,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290726007] [2021-10-04 18:27:05,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-04 18:27:05,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:27:05,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-04 18:27:05,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-04 18:27:05,756 INFO L87 Difference]: Start difference. First operand 158 states and 333 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:27:05,787 INFO L93 Difference]: Finished difference Result 172 states and 350 transitions. [2021-10-04 18:27:05,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:27:05,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2021-10-04 18:27:05,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:27:05,789 INFO L225 Difference]: With dead ends: 172 [2021-10-04 18:27:05,789 INFO L226 Difference]: Without dead ends: 144 [2021-10-04 18:27:05,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:27:05,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-04 18:27:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-04 18:27:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.090909090909091) internal successors, (299), 143 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 299 transitions. [2021-10-04 18:27:05,796 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 299 transitions. Word has length 27 [2021-10-04 18:27:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:27:05,797 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 299 transitions. [2021-10-04 18:27:05,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 299 transitions. [2021-10-04 18:27:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-04 18:27:05,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:27:05,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:27:05,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-04 18:27:05,799 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:27:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:27:05,800 INFO L82 PathProgramCache]: Analyzing trace with hash 243497403, now seen corresponding path program 7 times [2021-10-04 18:27:05,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:27:05,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631597972] [2021-10-04 18:27:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:27:05,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:27:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:27:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:27:05,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:27:05,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631597972] [2021-10-04 18:27:05,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631597972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:27:05,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:27:05,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-04 18:27:05,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953733989] [2021-10-04 18:27:05,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-04 18:27:05,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:27:05,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-04 18:27:05,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:27:05,905 INFO L87 Difference]: Start difference. First operand 144 states and 299 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:06,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:27:06,026 INFO L93 Difference]: Finished difference Result 124 states and 247 transitions. [2021-10-04 18:27:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-04 18:27:06,027 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2021-10-04 18:27:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:27:06,028 INFO L225 Difference]: With dead ends: 124 [2021-10-04 18:27:06,028 INFO L226 Difference]: Without dead ends: 112 [2021-10-04 18:27:06,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-04 18:27:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-04 18:27:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-04 18:27:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.990990990990991) internal successors, (221), 111 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 221 transitions. [2021-10-04 18:27:06,034 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 221 transitions. Word has length 27 [2021-10-04 18:27:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:27:06,035 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 221 transitions. [2021-10-04 18:27:06,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 221 transitions. [2021-10-04 18:27:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-04 18:27:06,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:27:06,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:27:06,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-04 18:27:06,037 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:27:06,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:27:06,038 INFO L82 PathProgramCache]: Analyzing trace with hash 205100421, now seen corresponding path program 8 times [2021-10-04 18:27:06,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:27:06,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775579133] [2021-10-04 18:27:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:27:06,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:27:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:27:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:27:06,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:27:06,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775579133] [2021-10-04 18:27:06,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775579133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:27:06,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:27:06,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-04 18:27:06,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894177680] [2021-10-04 18:27:06,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-04 18:27:06,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:27:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-04 18:27:06,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:27:06,148 INFO L87 Difference]: Start difference. First operand 112 states and 221 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:27:06,206 INFO L93 Difference]: Finished difference Result 111 states and 220 transitions. [2021-10-04 18:27:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:27:06,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 27 [2021-10-04 18:27:06,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:27:06,208 INFO L225 Difference]: With dead ends: 111 [2021-10-04 18:27:06,208 INFO L226 Difference]: Without dead ends: 0 [2021-10-04 18:27:06,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 64.4ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-04 18:27:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-04 18:27:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-04 18:27:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-04 18:27:06,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-04 18:27:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:27:06,210 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-04 18:27:06,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:27:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-04 18:27:06,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-04 18:27:06,214 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-04 18:27:06,215 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-04 18:27:06,215 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-04 18:27:06,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-04 18:27:06,220 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-04 18:27:06,221 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-04 18:27:06,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 06:27:06 BasicIcfg [2021-10-04 18:27:06,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-04 18:27:06,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-04 18:27:06,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-04 18:27:06,224 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-04 18:27:06,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:27:01" (3/4) ... [2021-10-04 18:27:06,229 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-04 18:27:06,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-04 18:27:06,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-04 18:27:06,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-04 18:27:06,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 18:27:06,243 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 18:27:06,295 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-04 18:27:06,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-04 18:27:06,298 INFO L168 Benchmark]: Toolchain (without parser) took 6208.97 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 33.6 MB in the beginning and 64.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2021-10-04 18:27:06,300 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 39.8 MB. Free memory was 21.2 MB in the beginning and 21.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 18:27:06,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.21 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 38.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-10-04 18:27:06,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.33 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 37.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:27:06,301 INFO L168 Benchmark]: Boogie Preprocessor took 58.49 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 36.0 MB in the end (delta: 998.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 18:27:06,302 INFO L168 Benchmark]: RCFGBuilder took 631.81 ms. Allocated memory is still 56.6 MB. Free memory was 36.0 MB in the beginning and 40.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-10-04 18:27:06,302 INFO L168 Benchmark]: TraceAbstraction took 5037.37 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 39.8 MB in the beginning and 20.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:27:06,305 INFO L168 Benchmark]: Witness Printer took 71.62 ms. Allocated memory is still 83.9 MB. Free memory was 20.6 MB in the beginning and 64.3 MB in the end (delta: -43.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-04 18:27:06,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 39.8 MB. Free memory was 21.2 MB in the beginning and 21.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.21 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 38.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.33 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 37.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.49 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 36.0 MB in the end (delta: 998.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 631.81 ms. Allocated memory is still 56.6 MB. Free memory was 36.0 MB in the beginning and 40.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5037.37 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 39.8 MB in the beginning and 20.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. * Witness Printer took 71.62 ms. Allocated memory is still 83.9 MB. Free memory was 20.6 MB in the beginning and 64.3 MB in the end (delta: -43.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2102.6ms, 90 PlacesBefore, 37 PlacesAfterwards, 88 TransitionsBefore, 31 TransitionsAfterwards, 1400 CoEnabledTransitionPairs, 10 FixpointIterations, 30 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 74 TotalNumberOfCompositions, 6243 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3025, positive: 2694, positive conditional: 0, positive unconditional: 2694, negative: 331, negative conditional: 0, negative unconditional: 331, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1087, positive: 1047, positive conditional: 0, positive unconditional: 1047, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1087, positive: 1035, positive conditional: 0, positive unconditional: 1035, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 77, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3025, positive: 1647, positive conditional: 0, positive unconditional: 1647, negative: 291, negative conditional: 0, negative unconditional: 291, unknown: 1087, unknown conditional: 0, unknown unconditional: 1087] , Statistics on independence cache: Total cache size (in pairs): 186, Positive cache size: 160, Positive conditional cache size: 0, Positive unconditional cache size: 160, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 55]: 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 with 1 thread instances CFG has 5 procedures, 124 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4850.0ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 35.1ms, AutomataDifference: 924.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2202.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 318 SDtfs, 660 SDslu, 848 SDs, 0 SdLazy, 415 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 285.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 587.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=0, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 164.0ms AutomataMinimizationTime, 9 MinimizatonAttempts, 302 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.6ms SsaConstructionTime, 243.3ms SatisfiabilityAnalysisTime, 979.0ms InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 1084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 RESULT: Ultimate proved your program to be correct! [2021-10-04 18:27:06,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...