./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel/misc-2-unrolled.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/parallel/misc-2-unrolled.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 77b3b0e21394b79789521772f0c3bb937c93165a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-03 12:07:17,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-03 12:07:17,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-03 12:07:17,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-03 12:07:17,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-03 12:07:17,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-03 12:07:17,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-03 12:07:17,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-03 12:07:17,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-03 12:07:17,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-03 12:07:17,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-03 12:07:17,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-03 12:07:17,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-03 12:07:17,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-03 12:07:17,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-03 12:07:17,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-03 12:07:17,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-03 12:07:17,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-03 12:07:17,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-03 12:07:17,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-03 12:07:17,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-03 12:07:17,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-03 12:07:17,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-03 12:07:17,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-03 12:07:17,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-03 12:07:17,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-03 12:07:17,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-03 12:07:17,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-03 12:07:17,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-03 12:07:17,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-03 12:07:17,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-03 12:07:17,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-03 12:07:17,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-03 12:07:17,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-03 12:07:17,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-03 12:07:17,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-03 12:07:17,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-03 12:07:17,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-03 12:07:17,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-03 12:07:17,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-03 12:07:17,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-03 12:07:17,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-03 12:07:17,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-03 12:07:17,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-03 12:07:17,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-03 12:07:17,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-03 12:07:17,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-03 12:07:17,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-03 12:07:17,562 INFO L138 SettingsManager]: * Use SBE=true [2021-10-03 12:07:17,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-03 12:07:17,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-03 12:07:17,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-03 12:07:17,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-03 12:07:17,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-03 12:07:17,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-03 12:07:17,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-03 12:07:17,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-03 12:07:17,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-03 12:07:17,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-03 12:07:17,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-03 12:07:17,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-03 12:07:17,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-03 12:07:17,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-03 12:07:17,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-03 12:07:17,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:07:17,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-03 12:07:17,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-03 12:07:17,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-03 12:07:17,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-03 12:07:17,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-03 12:07:17,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-03 12:07:17,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-03 12:07:17,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b3b0e21394b79789521772f0c3bb937c93165a [2021-10-03 12:07:17,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-03 12:07:18,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-03 12:07:18,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-03 12:07:18,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-03 12:07:18,012 INFO L275 PluginConnector]: CDTParser initialized [2021-10-03 12:07:18,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/misc-2-unrolled.wvr.c [2021-10-03 12:07:18,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51d97df0f/bb35c6038a03407882d410ace14b64be/FLAG7bc576e99 [2021-10-03 12:07:18,751 INFO L306 CDTParser]: Found 1 translation units. [2021-10-03 12:07:18,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-2-unrolled.wvr.c [2021-10-03 12:07:18,752 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:07:18,752 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:07:18,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51d97df0f/bb35c6038a03407882d410ace14b64be/FLAG7bc576e99 [2021-10-03 12:07:19,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51d97df0f/bb35c6038a03407882d410ace14b64be [2021-10-03 12:07:19,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-03 12:07:19,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-03 12:07:19,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-03 12:07:19,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-03 12:07:19,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-03 12:07:19,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b84405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19, skipping insertion in model container [2021-10-03 12:07:19,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-03 12:07:19,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-03 12:07:19,347 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:07:19,389 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/parallel/misc-2-unrolled.wvr.c[964,977] [2021-10-03 12:07:19,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:07:19,402 INFO L203 MainTranslator]: Completed pre-run [2021-10-03 12:07:19,414 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:07:19,426 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/parallel/misc-2-unrolled.wvr.c[964,977] [2021-10-03 12:07:19,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:07:19,446 INFO L208 MainTranslator]: Completed translation [2021-10-03 12:07:19,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19 WrapperNode [2021-10-03 12:07:19,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-03 12:07:19,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-03 12:07:19,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-03 12:07:19,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-03 12:07:19,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-03 12:07:19,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-03 12:07:19,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-03 12:07:19,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-03 12:07:19,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-03 12:07:19,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-03 12:07:19,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-03 12:07:19,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-03 12:07:19,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (1/1) ... [2021-10-03 12:07:19,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:07:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:07:19,553 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) [2021-10-03 12:07:19,578 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 [2021-10-03 12:07:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-03 12:07:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-03 12:07:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-03 12:07:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-03 12:07:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-03 12:07:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-03 12:07:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-03 12:07:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-03 12:07:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-03 12:07:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-03 12:07:19,636 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-03 12:07:19,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-03 12:07:19,984 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-03 12:07:19,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:07:19 BoogieIcfgContainer [2021-10-03 12:07:19,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-03 12:07:19,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-03 12:07:19,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-03 12:07:19,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-03 12:07:19,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 12:07:19" (1/3) ... [2021-10-03 12:07:19,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e00537d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:07:19, skipping insertion in model container [2021-10-03 12:07:19,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:07:19" (2/3) ... [2021-10-03 12:07:19,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e00537d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:07:19, skipping insertion in model container [2021-10-03 12:07:19,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:07:19" (3/3) ... [2021-10-03 12:07:19,998 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled.wvr.c [2021-10-03 12:07:20,013 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-03 12:07:20,013 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-03 12:07:20,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-03 12:07:20,014 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-03 12:07:20,089 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,099 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,099 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,103 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,103 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,104 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,104 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,104 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,105 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,105 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,105 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,106 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,119 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,120 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,120 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,121 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,121 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,121 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,133 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:07:20,156 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-03 12:07:20,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-03 12:07:20,237 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 [2021-10-03 12:07:20,241 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-03 12:07:20,264 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-03 12:07:20,281 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-03 12:07:20,284 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-03 12:07:20,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2021-10-03 12:07:20,340 INFO L129 PetriNetUnfolder]: 6/89 cut-off events. [2021-10-03 12:07:20,340 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-03 12:07:20,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-10-03 12:07:20,349 INFO L116 LiptonReduction]: Number of co-enabled transitions 904 [2021-10-03 12:07:22,978 INFO L131 LiptonReduction]: Checked pairs total: 1278 [2021-10-03 12:07:22,979 INFO L133 LiptonReduction]: Total number of compositions: 80 [2021-10-03 12:07:22,990 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 20 transitions, 56 flow [2021-10-03 12:07:23,003 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 50 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-03 12:07:23,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:23,014 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:23,015 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-03 12:07:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:23,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1367303998, now seen corresponding path program 1 times [2021-10-03 12:07:23,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:23,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217236627] [2021-10-03 12:07:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:23,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:07:23,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:23,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217236627] [2021-10-03 12:07:23,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217236627] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:23,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:23,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-03 12:07:23,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545558546] [2021-10-03 12:07:23,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-03 12:07:23,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-03 12:07:23,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:23,434 INFO L87 Difference]: Start difference. First operand has 50 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-03 12:07:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:23,505 INFO L93 Difference]: Finished difference Result 73 states and 162 transitions. [2021-10-03 12:07:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-03 12:07:23,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-10-03 12:07:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:23,522 INFO L225 Difference]: With dead ends: 73 [2021-10-03 12:07:23,523 INFO L226 Difference]: Without dead ends: 68 [2021-10-03 12:07:23,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:07:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-03 12:07:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2021-10-03 12:07:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.262295081967213) internal successors, (138), 61 states have internal predecessors, (138), 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) [2021-10-03 12:07:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 138 transitions. [2021-10-03 12:07:23,569 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 138 transitions. Word has length 11 [2021-10-03 12:07:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:23,570 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 138 transitions. [2021-10-03 12:07:23,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-03 12:07:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 138 transitions. [2021-10-03 12:07:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-03 12:07:23,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:23,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:23,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-03 12:07:23,573 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-03 12:07:23,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:23,574 INFO L82 PathProgramCache]: Analyzing trace with hash -853306192, now seen corresponding path program 1 times [2021-10-03 12:07:23,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:23,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373937839] [2021-10-03 12:07:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:23,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:07:23,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:23,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373937839] [2021-10-03 12:07:23,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373937839] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:23,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:23,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-03 12:07:23,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516186661] [2021-10-03 12:07:23,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-03 12:07:23,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-03 12:07:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-03 12:07:23,711 INFO L87 Difference]: Start difference. First operand 62 states and 138 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:23,758 INFO L93 Difference]: Finished difference Result 89 states and 200 transitions. [2021-10-03 12:07:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-03 12:07:23,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-03 12:07:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:23,764 INFO L225 Difference]: With dead ends: 89 [2021-10-03 12:07:23,764 INFO L226 Difference]: Without dead ends: 70 [2021-10-03 12:07:23,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-03 12:07:23,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-03 12:07:23,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2021-10-03 12:07:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.280701754385965) internal successors, (130), 57 states have internal predecessors, (130), 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) [2021-10-03 12:07:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 130 transitions. [2021-10-03 12:07:23,785 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 130 transitions. Word has length 13 [2021-10-03 12:07:23,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:23,786 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 130 transitions. [2021-10-03 12:07:23,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 130 transitions. [2021-10-03 12:07:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-03 12:07:23,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:23,790 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:23,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-03 12:07:23,791 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-03 12:07:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:23,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1778651334, now seen corresponding path program 1 times [2021-10-03 12:07:23,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:23,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778749432] [2021-10-03 12:07:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:23,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:07:23,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:23,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778749432] [2021-10-03 12:07:23,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778749432] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:23,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:23,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-03 12:07:23,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104237653] [2021-10-03 12:07:23,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-03 12:07:23,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:23,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-03 12:07:23,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-03 12:07:23,921 INFO L87 Difference]: Start difference. First operand 58 states and 130 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:24,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:24,017 INFO L93 Difference]: Finished difference Result 111 states and 258 transitions. [2021-10-03 12:07:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-03 12:07:24,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-03 12:07:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:24,019 INFO L225 Difference]: With dead ends: 111 [2021-10-03 12:07:24,020 INFO L226 Difference]: Without dead ends: 92 [2021-10-03 12:07:24,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-03 12:07:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-03 12:07:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2021-10-03 12:07:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.3544303797468356) internal successors, (186), 79 states have internal predecessors, (186), 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) [2021-10-03 12:07:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 186 transitions. [2021-10-03 12:07:24,038 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 186 transitions. Word has length 15 [2021-10-03 12:07:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:24,038 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 186 transitions. [2021-10-03 12:07:24,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 186 transitions. [2021-10-03 12:07:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-03 12:07:24,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:24,040 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:24,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-03 12:07:24,041 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-03 12:07:24,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:24,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1021104856, now seen corresponding path program 1 times [2021-10-03 12:07:24,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:24,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522029549] [2021-10-03 12:07:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:24,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:07:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-03 12:07:24,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:07:24,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522029549] [2021-10-03 12:07:24,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522029549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:07:24,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:07:24,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-03 12:07:24,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757573962] [2021-10-03 12:07:24,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-03 12:07:24,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:07:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-03 12:07:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-03 12:07:24,192 INFO L87 Difference]: Start difference. First operand 80 states and 186 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:07:24,306 INFO L93 Difference]: Finished difference Result 153 states and 363 transitions. [2021-10-03 12:07:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-03 12:07:24,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-03 12:07:24,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:07:24,313 INFO L225 Difference]: With dead ends: 153 [2021-10-03 12:07:24,313 INFO L226 Difference]: Without dead ends: 120 [2021-10-03 12:07:24,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-03 12:07:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-03 12:07:24,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 66. [2021-10-03 12:07:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.3692307692307693) internal successors, (154), 65 states have internal predecessors, (154), 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) [2021-10-03 12:07:24,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 154 transitions. [2021-10-03 12:07:24,344 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 154 transitions. Word has length 17 [2021-10-03 12:07:24,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:07:24,344 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 154 transitions. [2021-10-03 12:07:24,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:07:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 154 transitions. [2021-10-03 12:07:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-03 12:07:24,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:07:24,347 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:07:24,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-03 12:07:24,348 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-03 12:07:24,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:07:24,349 INFO L82 PathProgramCache]: Analyzing trace with hash -488768500, now seen corresponding path program 2 times [2021-10-03 12:07:24,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:07:24,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973625488] [2021-10-03 12:07:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:07:24,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:07:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-03 12:07:24,390 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-03 12:07:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-03 12:07:24,483 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-03 12:07:24,484 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-03 12:07:24,485 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-03 12:07:24,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-03 12:07:24,488 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-03 12:07:24,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-03 12:07:24,496 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-03 12:07:24,497 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-03 12:07:24,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 12:07:24 BasicIcfg [2021-10-03 12:07:24,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-03 12:07:24,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-03 12:07:24,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-03 12:07:24,571 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-03 12:07:24,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:07:19" (3/4) ... [2021-10-03 12:07:24,574 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-03 12:07:24,657 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-03 12:07:24,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-03 12:07:24,659 INFO L168 Benchmark]: Toolchain (without parser) took 5525.32 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.9 MB in the beginning and 47.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:24,660 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 21.3 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 12:07:24,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.01 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 36.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:24,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.17 ms. Allocated memory is still 56.6 MB. Free memory was 36.0 MB in the beginning and 34.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:24,662 INFO L168 Benchmark]: Boogie Preprocessor took 27.15 ms. Allocated memory is still 56.6 MB. Free memory was 34.5 MB in the beginning and 33.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 12:07:24,662 INFO L168 Benchmark]: RCFGBuilder took 473.33 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 35.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:24,663 INFO L168 Benchmark]: TraceAbstraction took 4580.01 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.9 MB in the beginning and 23.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:24,664 INFO L168 Benchmark]: Witness Printer took 86.81 ms. Allocated memory is still 69.2 MB. Free memory was 23.8 MB in the beginning and 47.1 MB in the end (delta: -23.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-03 12:07:24,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 21.3 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.01 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 36.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.17 ms. Allocated memory is still 56.6 MB. Free memory was 36.0 MB in the beginning and 34.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.15 ms. Allocated memory is still 56.6 MB. Free memory was 34.5 MB in the beginning and 33.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 473.33 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 35.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4580.01 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.9 MB in the beginning and 23.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. * Witness Printer took 86.81 ms. Allocated memory is still 69.2 MB. Free memory was 23.8 MB in the beginning and 47.1 MB in the end (delta: -23.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2695.1ms, 92 PlacesBefore, 25 PlacesAfterwards, 91 TransitionsBefore, 20 TransitionsAfterwards, 904 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 80 TotalNumberOfCompositions, 1278 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 972, positive: 924, positive conditional: 0, positive unconditional: 924, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 594, positive: 572, positive conditional: 0, positive unconditional: 572, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 594, positive: 572, positive conditional: 0, positive unconditional: 572, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 70, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 972, positive: 352, positive conditional: 0, positive unconditional: 352, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 594, unknown conditional: 0, unknown unconditional: 594] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - 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 - CounterExampleResult [Line: 56]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] 0 int pos, i1, i2, N; [L39] 0 pthread_t t1, t2; [L42] 0 pos = __VERIFIER_nondet_int() [L43] 0 i1 = __VERIFIER_nondet_int() [L44] 0 i2 = __VERIFIER_nondet_int() [L45] 0 N = __VERIFIER_nondet_int() [L11] COND FALSE 0 !(!cond) [L50] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [i1=0, i2=0, N=1, pos=0] [L17] COND TRUE 1 ( i1 < ( 2 * N ) ) [L18] 1 pos++ VAL [i1=0, i2=0, N=1, pos=0, pos++=0] [L18] 1 pos++ [L19] 1 i1++ [L20] 1 pos-- VAL [i1=1, i2=0, N=1, pos=1, pos--=1] [L51] FCALL, FORK 0 pthread_create(&t2, NULL, thread2, NULL) VAL [i1=1, i2=0, N=1, pos=1, pos--=1] [L52] 0 \read(t1) VAL [i1=1, i2=0, N=1, pos=1, pos--=1] [L28] COND TRUE 2 ( i2 < ( 2 * N ) ) [L29] 2 pos = ( pos + 2 ) [L30] 2 i2++ VAL [i1=1, i2=1, N=1, pos=3, pos--=1] [L20] 1 pos-- [L21] 1 i1++ VAL [i1=2, i2=1, N=1, pos=0] [L17] COND FALSE 1 !(( i1 < ( 2 * N ) )) [L24] 1 return 0; [L31] 2 pos = ( pos - 2 ) [L32] 2 i2++ VAL [\result={0:0}, i1=2, i2=2, N=1, pos=-2] [L28] COND FALSE 2 !(( i2 < ( 2 * N ) )) [L35] 2 return 0; [L52] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, \result={0:0}, i1=2, i2=2, N=1, pos=-2] [L53] 0 \read(t2) VAL [\result={0:0}, \result={0:0}, i1=2, i2=2, N=1, pos=-2] [L53] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, i1=2, i2=2, N=1, pos=-2] [L11] COND FALSE 0 !(!cond) [L56] 0 reach_error() VAL [\result={0:0}, \result={0:0}, i1=2, i2=2, N=1, pos=-2] - UnprovableResult [Line: 50]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 51]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4267.1ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 17.8ms, AutomataDifference: 408.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2762.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 89 SDtfs, 57 SDslu, 198 SDs, 0 SdLazy, 193 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 154.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 94.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 84 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.6ms SsaConstructionTime, 205.6ms SatisfiabilityAnalysisTime, 453.4ms InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-03 12:07:24,726 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...