./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-atomic/szymanski.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7ed3fc81a6baa40baeec77c0043080ce5c04efa .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 22:03:03,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:03:03,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:03:03,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:03:03,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:03:03,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:03:03,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:03:03,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:03:03,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:03:03,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:03:03,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:03:03,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:03:03,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:03:03,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:03:03,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:03:03,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:03:03,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:03:03,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:03:03,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:03:03,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:03:03,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:03:03,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:03:03,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:03:03,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:03:03,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:03:03,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:03:03,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:03:03,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:03:03,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:03:03,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:03:03,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:03:03,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:03:03,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:03:03,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:03:03,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:03:03,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:03:03,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:03:03,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:03:03,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:03:03,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:03:03,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:03:03,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:03:03,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:03:03,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:03:03,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:03:03,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:03:03,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:03:03,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:03:03,591 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:03:03,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:03:03,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:03:03,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:03:03,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:03:03,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:03:03,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:03:03,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:03:03,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:03:03,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:03:03,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:03:03,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:03:03,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:03:03,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:03:03,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:03:03,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:03:03,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:03:03,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:03:03,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:03:03,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:03:03,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:03:03,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:03:03,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:03:03,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:03:03,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7ed3fc81a6baa40baeec77c0043080ce5c04efa [2021-08-29 22:03:03,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:03:03,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:03:03,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:03:03,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:03:03,839 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:03:03,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/szymanski.i [2021-08-29 22:03:03,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c222437/869ea8bb139a45bc8d0dc26a343b3ae4/FLAG4d9481377 [2021-08-29 22:03:04,314 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:03:04,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i [2021-08-29 22:03:04,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c222437/869ea8bb139a45bc8d0dc26a343b3ae4/FLAG4d9481377 [2021-08-29 22:03:04,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c222437/869ea8bb139a45bc8d0dc26a343b3ae4 [2021-08-29 22:03:04,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:03:04,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:03:04,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:03:04,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:03:04,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:03:04,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee981d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04, skipping insertion in model container [2021-08-29 22:03:04,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:03:04,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:03:04,569 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-29 22:03:04,674 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-08-29 22:03:04,680 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-08-29 22:03:04,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:03:04,693 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:03:04,708 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-29 22:03:04,730 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-08-29 22:03:04,736 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-08-29 22:03:04,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:03:04,772 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:03:04,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04 WrapperNode [2021-08-29 22:03:04,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:03:04,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:03:04,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:03:04,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:03:04,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:03:04,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:03:04,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:03:04,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:03:04,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:03:04,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:03:04,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:03:04,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:03:04,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (1/1) ... [2021-08-29 22:03:04,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:03:04,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:03:04,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 22:03:04,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 22:03:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 22:03:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-29 22:03:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-29 22:03:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-29 22:03:04,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-29 22:03:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:03:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:03:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:03:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:03:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:03:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:03:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:03:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:03:04,932 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-29 22:03:05,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:03:05,154 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-29 22:03:05,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:03:05 BoogieIcfgContainer [2021-08-29 22:03:05,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:03:05,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:03:05,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:03:05,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:03:05,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:03:04" (1/3) ... [2021-08-29 22:03:05,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e9c52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:03:05, skipping insertion in model container [2021-08-29 22:03:05,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:03:04" (2/3) ... [2021-08-29 22:03:05,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e9c52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:03:05, skipping insertion in model container [2021-08-29 22:03:05,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:03:05" (3/3) ... [2021-08-29 22:03:05,163 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-08-29 22:03:05,167 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:03:05,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:03:05,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 22:03:05,167 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:03:05,198 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,198 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,199 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,199 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,202 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,202 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,202 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,205 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,205 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,205 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,205 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,207 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,207 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,207 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,207 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,207 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,209 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,209 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,210 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,210 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,214 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,234 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,234 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,235 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,237 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,237 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,238 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:03:05,241 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-29 22:03:05,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:03:05,287 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 [2021-08-29 22:03:05,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-29 22:03:05,299 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:03:05,308 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 113 transitions, 242 flow [2021-08-29 22:03:05,310 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 113 transitions, 242 flow [2021-08-29 22:03:05,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 113 transitions, 242 flow [2021-08-29 22:03:05,366 INFO L129 PetriNetUnfolder]: 20/111 cut-off events. [2021-08-29 22:03:05,366 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-29 22:03:05,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 111 events. 20/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2021-08-29 22:03:05,391 INFO L116 LiptonReduction]: Number of co-enabled transitions 3672 [2021-08-29 22:03:07,211 INFO L131 LiptonReduction]: Checked pairs total: 9097 [2021-08-29 22:03:07,211 INFO L133 LiptonReduction]: Total number of compositions: 82 [2021-08-29 22:03:07,217 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 50 transitions, 116 flow [2021-08-29 22:03:07,262 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 456 states, 453 states have (on average 3.075055187637969) internal successors, (1393), 455 states have internal predecessors, (1393), 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) [2021-08-29 22:03:07,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 453 states have (on average 3.075055187637969) internal successors, (1393), 455 states have internal predecessors, (1393), 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) [2021-08-29 22:03:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:03:07,268 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:03:07,268 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:03:07,269 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:03:07,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:03:07,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2020190889, now seen corresponding path program 1 times [2021-08-29 22:03:07,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:03:07,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439296225] [2021-08-29 22:03:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:03:07,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:03:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:03:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:03:07,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:03:07,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439296225] [2021-08-29 22:03:07,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439296225] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:03:07,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:03:07,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:03:07,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416592227] [2021-08-29 22:03:07,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:03:07,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:03:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:03:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:03:07,506 INFO L87 Difference]: Start difference. First operand has 456 states, 453 states have (on average 3.075055187637969) internal successors, (1393), 455 states have internal predecessors, (1393), 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 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-08-29 22:03:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:03:07,573 INFO L93 Difference]: Finished difference Result 460 states and 1324 transitions. [2021-08-29 22:03:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:03:07,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-08-29 22:03:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:03:07,585 INFO L225 Difference]: With dead ends: 460 [2021-08-29 22:03:07,585 INFO L226 Difference]: Without dead ends: 400 [2021-08-29 22:03:07,586 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:03:07,588 INFO L928 BasicCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.28ms IncrementalHoareTripleChecker+Time [2021-08-29 22:03:07,589 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 38 Invalid, 38 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 34.28ms Time] [2021-08-29 22:03:07,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-08-29 22:03:07,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 384. [2021-08-29 22:03:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 2.9157894736842107) internal successors, (1108), 383 states have internal predecessors, (1108), 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) [2021-08-29 22:03:07,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1108 transitions. [2021-08-29 22:03:07,633 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1108 transitions. Word has length 10 [2021-08-29 22:03:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:03:07,634 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1108 transitions. [2021-08-29 22:03:07,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-08-29 22:03:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1108 transitions. [2021-08-29 22:03:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:03:07,635 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:03:07,636 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:03:07,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:03:07,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:03:07,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:03:07,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1018981212, now seen corresponding path program 1 times [2021-08-29 22:03:07,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:03:07,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183089187] [2021-08-29 22:03:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:03:07,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:03:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:03:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:03:07,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:03:07,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183089187] [2021-08-29 22:03:07,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183089187] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:03:07,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:03:07,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:03:07,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306461966] [2021-08-29 22:03:07,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:03:07,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:03:07,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:03:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:03:07,674 INFO L87 Difference]: Start difference. First operand 384 states and 1108 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:03:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:03:07,707 INFO L93 Difference]: Finished difference Result 370 states and 1056 transitions. [2021-08-29 22:03:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:03:07,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-29 22:03:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:03:07,710 INFO L225 Difference]: With dead ends: 370 [2021-08-29 22:03:07,710 INFO L226 Difference]: Without dead ends: 276 [2021-08-29 22:03:07,710 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:03:07,711 INFO L928 BasicCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.49ms IncrementalHoareTripleChecker+Time [2021-08-29 22:03:07,711 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 54 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 26.49ms Time] [2021-08-29 22:03:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-08-29 22:03:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-08-29 22:03:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 2.900735294117647) internal successors, (789), 275 states have internal predecessors, (789), 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) [2021-08-29 22:03:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 789 transitions. [2021-08-29 22:03:07,731 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 789 transitions. Word has length 12 [2021-08-29 22:03:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:03:07,731 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 789 transitions. [2021-08-29 22:03:07,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:03:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 789 transitions. [2021-08-29 22:03:07,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:03:07,733 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:03:07,733 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:03:07,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:03:07,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:03:07,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:03:07,734 INFO L82 PathProgramCache]: Analyzing trace with hash -149090451, now seen corresponding path program 1 times [2021-08-29 22:03:07,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:03:07,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811579239] [2021-08-29 22:03:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:03:07,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:03:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:03:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:03:07,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:03:07,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811579239] [2021-08-29 22:03:07,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811579239] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:03:07,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:03:07,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:03:07,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108279497] [2021-08-29 22:03:07,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:03:07,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:03:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:03:07,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:03:07,772 INFO L87 Difference]: Start difference. First operand 276 states and 789 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-08-29 22:03:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:03:07,891 INFO L93 Difference]: Finished difference Result 418 states and 1148 transitions. [2021-08-29 22:03:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:03:07,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 [2021-08-29 22:03:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:03:07,894 INFO L225 Difference]: With dead ends: 418 [2021-08-29 22:03:07,894 INFO L226 Difference]: Without dead ends: 418 [2021-08-29 22:03:07,895 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:03:07,895 INFO L928 BasicCegarLoop]: 40 mSDtfsCounter, 45 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.70ms IncrementalHoareTripleChecker+Time [2021-08-29 22:03:07,896 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 84 Invalid, 137 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [16 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 106.70ms Time] [2021-08-29 22:03:07,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-08-29 22:03:07,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 356. [2021-08-29 22:03:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 352 states have (on average 2.883522727272727) internal successors, (1015), 355 states have internal predecessors, (1015), 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) [2021-08-29 22:03:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1015 transitions. [2021-08-29 22:03:07,911 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1015 transitions. Word has length 19 [2021-08-29 22:03:07,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:03:07,911 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1015 transitions. [2021-08-29 22:03:07,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-08-29 22:03:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1015 transitions. [2021-08-29 22:03:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:03:07,917 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:03:07,917 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:03:07,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:03:07,917 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:03:07,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:03:07,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1217331885, now seen corresponding path program 2 times [2021-08-29 22:03:07,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:03:07,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127648246] [2021-08-29 22:03:07,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:03:07,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:03:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:03:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:03:07,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:03:07,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127648246] [2021-08-29 22:03:07,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127648246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:03:07,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:03:07,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:03:07,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034701033] [2021-08-29 22:03:07,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:03:07,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:03:07,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:03:07,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:03:07,981 INFO L87 Difference]: Start difference. First operand 356 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-08-29 22:03:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:03:08,052 INFO L93 Difference]: Finished difference Result 420 states and 1181 transitions. [2021-08-29 22:03:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:03:08,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 [2021-08-29 22:03:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:03:08,054 INFO L225 Difference]: With dead ends: 420 [2021-08-29 22:03:08,054 INFO L226 Difference]: Without dead ends: 318 [2021-08-29 22:03:08,057 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:03:08,059 INFO L928 BasicCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.29ms IncrementalHoareTripleChecker+Time [2021-08-29 22:03:08,061 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 62 Invalid, 132 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [22 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 61.29ms Time] [2021-08-29 22:03:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-08-29 22:03:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 272. [2021-08-29 22:03:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 2.708955223880597) internal successors, (726), 271 states have internal predecessors, (726), 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) [2021-08-29 22:03:08,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 726 transitions. [2021-08-29 22:03:08,069 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 726 transitions. Word has length 19 [2021-08-29 22:03:08,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:03:08,069 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 726 transitions. [2021-08-29 22:03:08,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-08-29 22:03:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 726 transitions. [2021-08-29 22:03:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:03:08,070 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:03:08,070 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:03:08,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:03:08,070 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:03:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:03:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash -269805487, now seen corresponding path program 3 times [2021-08-29 22:03:08,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:03:08,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268285706] [2021-08-29 22:03:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:03:08,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:03:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:03:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:03:08,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:03:08,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268285706] [2021-08-29 22:03:08,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268285706] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:03:08,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:03:08,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:03:08,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917264410] [2021-08-29 22:03:08,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:03:08,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:03:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:03:08,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:03:08,122 INFO L87 Difference]: Start difference. First operand 272 states and 726 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-08-29 22:03:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:03:08,162 INFO L93 Difference]: Finished difference Result 306 states and 813 transitions. [2021-08-29 22:03:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:03:08,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 [2021-08-29 22:03:08,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:03:08,163 INFO L225 Difference]: With dead ends: 306 [2021-08-29 22:03:08,164 INFO L226 Difference]: Without dead ends: 306 [2021-08-29 22:03:08,164 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:03:08,166 INFO L928 BasicCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.88ms IncrementalHoareTripleChecker+Time [2021-08-29 22:03:08,166 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 62 Unknown, 0 Unchecked, 0.46ms Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 34.88ms Time] [2021-08-29 22:03:08,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-08-29 22:03:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 270. [2021-08-29 22:03:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 266 states have (on average 2.68796992481203) internal successors, (715), 269 states have internal predecessors, (715), 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) [2021-08-29 22:03:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 715 transitions. [2021-08-29 22:03:08,171 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 715 transitions. Word has length 19 [2021-08-29 22:03:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:03:08,172 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 715 transitions. [2021-08-29 22:03:08,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-08-29 22:03:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 715 transitions. [2021-08-29 22:03:08,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:03:08,175 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:03:08,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:03:08,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:03:08,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-29 22:03:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:03:08,177 INFO L82 PathProgramCache]: Analyzing trace with hash -769876591, now seen corresponding path program 4 times [2021-08-29 22:03:08,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:03:08,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311670628] [2021-08-29 22:03:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:03:08,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:03:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:03:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:03:08,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:03:08,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311670628] [2021-08-29 22:03:08,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311670628] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:03:08,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:03:08,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:03:08,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133052801] [2021-08-29 22:03:08,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:03:08,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:03:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:03:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:03:08,226 INFO L87 Difference]: Start difference. First operand 270 states and 715 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-08-29 22:03:08,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:03:08,269 INFO L93 Difference]: Finished difference Result 274 states and 739 transitions. [2021-08-29 22:03:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:03:08,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 [2021-08-29 22:03:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:03:08,269 INFO L225 Difference]: With dead ends: 274 [2021-08-29 22:03:08,269 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:03:08,270 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:03:08,270 INFO L928 BasicCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.55ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.08ms IncrementalHoareTripleChecker+Time [2021-08-29 22:03:08,270 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 41 Invalid, 85 Unknown, 0 Unchecked, 0.55ms Time], IncrementalHoareTripleChecker [15 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 36.08ms Time] [2021-08-29 22:03:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:03:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:03:08,271 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) [2021-08-29 22:03:08,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:03:08,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-08-29 22:03:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:03:08,271 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:03:08,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-08-29 22:03:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:03:08,272 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:03:08,273 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-08-29 22:03:08,274 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-08-29 22:03:08,274 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-08-29 22:03:08,274 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-08-29 22:03:08,274 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-08-29 22:03:08,274 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-08-29 22:03:08,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:03:08,277 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:03:08,278 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:03:08,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:03:08 BasicIcfg [2021-08-29 22:03:08,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:03:08,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:03:08,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:03:08,280 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:03:08,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:03:05" (3/4) ... [2021-08-29 22:03:08,281 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:03:08,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-08-29 22:03:08,285 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-08-29 22:03:08,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-29 22:03:08,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:03:08,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:03:08,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:03:08,302 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:03:08,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:03:08,302 INFO L158 Benchmark]: Toolchain (without parser) took 3948.05ms. Allocated memory was 56.6MB in the beginning and 119.5MB in the end (delta: 62.9MB). Free memory was 34.0MB in the beginning and 48.7MB in the end (delta: -14.7MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2021-08-29 22:03:08,302 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:03:08,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.02ms. Allocated memory was 56.6MB in the beginning and 81.8MB in the end (delta: 25.2MB). Free memory was 33.8MB in the beginning and 54.8MB in the end (delta: -21.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 22:03:08,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.28ms. Allocated memory is still 81.8MB. Free memory was 54.8MB in the beginning and 53.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:03:08,303 INFO L158 Benchmark]: Boogie Preprocessor took 38.13ms. Allocated memory is still 81.8MB. Free memory was 53.0MB in the beginning and 51.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:03:08,303 INFO L158 Benchmark]: RCFGBuilder took 301.59ms. Allocated memory is still 81.8MB. Free memory was 51.5MB in the beginning and 59.8MB in the end (delta: -8.3MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-08-29 22:03:08,303 INFO L158 Benchmark]: TraceAbstraction took 3120.23ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 59.3MB in the beginning and 51.8MB in the end (delta: 7.5MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2021-08-29 22:03:08,304 INFO L158 Benchmark]: Witness Printer took 22.13ms. Allocated memory is still 119.5MB. Free memory was 51.8MB in the beginning and 48.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:03:08,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.02ms. Allocated memory was 56.6MB in the beginning and 81.8MB in the end (delta: 25.2MB). Free memory was 33.8MB in the beginning and 54.8MB in the end (delta: -21.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.28ms. Allocated memory is still 81.8MB. Free memory was 54.8MB in the beginning and 53.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.13ms. Allocated memory is still 81.8MB. Free memory was 53.0MB in the beginning and 51.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 301.59ms. Allocated memory is still 81.8MB. Free memory was 51.5MB in the beginning and 59.8MB in the end (delta: -8.3MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3120.23ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 59.3MB in the beginning and 51.8MB in the end (delta: 7.5MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * Witness Printer took 22.13ms. Allocated memory is still 119.5MB. Free memory was 51.8MB in the beginning and 48.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1901.42ms, 100 PlacesBefore, 45 PlacesAfterwards, 113 TransitionsBefore, 50 TransitionsAfterwards, 3672 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 8 ChoiceCompositions, 82 TotalNumberOfCompositions, 9097 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4070, positive: 3814, positive conditional: 0, positive unconditional: 3814, negative: 256, negative conditional: 0, negative unconditional: 256, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2406, positive: 2356, positive conditional: 0, positive unconditional: 2356, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2406, positive: 2350, positive conditional: 0, positive unconditional: 2350, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4070, positive: 1458, positive conditional: 0, positive unconditional: 1458, negative: 206, negative conditional: 0, negative unconditional: 206, unknown: 2406, unknown conditional: 0, unknown unconditional: 2406] , Statistics on independence cache: Total cache size (in pairs): 246, Positive cache size: 209, Positive conditional cache size: 0, Positive unconditional cache size: 209, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: 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, 150 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3004.17ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 17.74ms, AutomataDifference: 448.59ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 1975.08ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 193 SdHoareTripleChecker+Valid, 299.72ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 316 SdHoareTripleChecker+Invalid, 227.28ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 241 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 450 IncrementalHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 182 mSDtfsCounter, 450 mSolverCounterSat, 4.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.77ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=456occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 72.61ms AutomataMinimizationTime, 6 MinimizatonAttempts, 160 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.67ms SsaConstructionTime, 83.41ms SatisfiabilityAnalysisTime, 210.80ms InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-29 22:03:08,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...