./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 ff03de63 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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:58:25,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:58:25,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:58:25,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:58:25,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:58:25,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:58:25,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:58:25,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:58:25,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:58:25,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:58:25,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:58:25,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:58:25,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:58:25,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:58:25,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:58:25,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:58:25,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:58:25,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:58:25,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:58:25,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:58:25,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:58:25,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:58:25,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:58:25,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:58:25,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:58:25,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:58:25,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:58:25,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:58:25,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:58:25,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:58:25,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:58:25,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:58:25,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:58:25,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:58:25,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:58:25,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:58:25,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:58:25,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:58:25,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:58:25,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:58:25,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:58:25,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:58:25,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:58:25,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:58:25,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:58:25,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:58:25,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:58:25,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:58:25,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:58:25,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:58:25,997 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:58:25,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:58:25,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:58:25,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:58:25,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:58:25,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:58:25,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:58:25,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:58:25,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:58:25,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:58:25,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:58:25,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:58:25,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:58:26,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:58:26,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:58:26,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:58:26,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:58:26,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:58:26,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:58:26,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:58:26,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:58:26,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:58:26,002 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:58:26,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:58:26,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:58:26,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:58:26,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2021-12-21 14:58:26,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:58:26,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:58:26,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:58:26,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:58:26,192 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:58:26,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/szymanski.i [2021-12-21 14:58:26,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702208803/4b31e691bafb40ab9160a41c5b8bd531/FLAGc4d95f1c0 [2021-12-21 14:58:26,654 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:58:26,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i [2021-12-21 14:58:26,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702208803/4b31e691bafb40ab9160a41c5b8bd531/FLAGc4d95f1c0 [2021-12-21 14:58:27,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702208803/4b31e691bafb40ab9160a41c5b8bd531 [2021-12-21 14:58:27,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:58:27,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:58:27,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:58:27,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:58:27,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:58:27,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228e012b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27, skipping insertion in model container [2021-12-21 14:58:27,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:58:27,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:58:27,266 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-21 14:58:27,356 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-12-21 14:58:27,369 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-12-21 14:58:27,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:58:27,388 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:58:27,408 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-21 14:58:27,423 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2021-12-21 14:58:27,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2021-12-21 14:58:27,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:58:27,469 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:58:27,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27 WrapperNode [2021-12-21 14:58:27,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:58:27,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:58:27,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:58:27,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:58:27,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,511 INFO L137 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2021-12-21 14:58:27,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:58:27,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:58:27,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:58:27,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:58:27,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:58:27,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:58:27,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:58:27,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:58:27,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (1/1) ... [2021-12-21 14:58:27,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:58:27,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:58:27,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 14:58:27,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 14:58:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 14:58:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-12-21 14:58:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-12-21 14:58:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-12-21 14:58:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-12-21 14:58:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 14:58:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-21 14:58:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:58:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 14:58:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 14:58:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:58:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-21 14:58:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:58:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:58:27,614 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 14:58:27,684 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:58:27,686 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:58:27,864 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:58:27,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:58:27,870 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-21 14:58:27,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:58:27 BoogieIcfgContainer [2021-12-21 14:58:27,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:58:27,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:58:27,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:58:27,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:58:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:58:27" (1/3) ... [2021-12-21 14:58:27,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a24418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:58:27, skipping insertion in model container [2021-12-21 14:58:27,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:27" (2/3) ... [2021-12-21 14:58:27,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a24418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:58:27, skipping insertion in model container [2021-12-21 14:58:27,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:58:27" (3/3) ... [2021-12-21 14:58:27,879 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-12-21 14:58:27,882 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 14:58:27,882 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:58:27,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:58:27,883 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 14:58:27,906 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,906 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,906 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,906 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,907 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,907 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,907 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,907 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,907 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,908 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,908 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,908 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,908 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,909 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,909 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,909 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,909 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,909 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,910 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,910 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,910 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,910 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,910 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,911 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,911 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,911 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,911 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,911 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,912 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,912 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,912 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,912 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,912 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,913 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,913 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,913 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,913 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,914 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,914 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,914 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,914 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,915 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,915 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,915 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,916 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,916 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,916 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,916 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,916 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,917 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,917 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,917 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,917 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,918 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,918 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,918 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,918 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,918 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,918 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,919 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,919 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,919 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,919 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,920 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,920 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,920 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,920 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,920 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,921 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,921 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,921 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,921 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,921 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,921 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,922 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,922 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,922 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,922 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,922 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,923 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,923 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,923 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,923 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,924 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,924 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,924 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,924 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,924 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,925 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,925 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,925 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,925 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,926 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,926 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,926 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,927 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,927 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,927 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,927 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,927 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,932 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,932 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,932 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,932 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,932 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:27,935 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-21 14:58:27,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:58:27,976 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:58:27,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-21 14:58:27,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 117 transitions, 250 flow [2021-12-21 14:58:28,031 INFO L129 PetriNetUnfolder]: 20/115 cut-off events. [2021-12-21 14:58:28,031 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 14:58:28,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 115 events. 20/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 158 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2021-12-21 14:58:28,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 117 transitions, 250 flow [2021-12-21 14:58:28,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 105 transitions, 219 flow [2021-12-21 14:58:28,049 INFO L129 PetriNetUnfolder]: 11/70 cut-off events. [2021-12-21 14:58:28,049 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 14:58:28,050 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:28,050 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:28,051 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:28,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:28,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1091180486, now seen corresponding path program 1 times [2021-12-21 14:58:28,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:28,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263546253] [2021-12-21 14:58:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:28,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:28,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263546253] [2021-12-21 14:58:28,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263546253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:28,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:28,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:58:28,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192535779] [2021-12-21 14:58:28,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:28,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 14:58:28,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 14:58:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 14:58:28,253 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 117 [2021-12-21 14:58:28,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 105 transitions, 219 flow. Second operand has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:28,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 117 [2021-12-21 14:58:28,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:28,285 INFO L129 PetriNetUnfolder]: 10/95 cut-off events. [2021-12-21 14:58:28,286 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2021-12-21 14:58:28,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 95 events. 10/95 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 141 event pairs, 0 based on Foata normal form. 16/99 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2021-12-21 14:58:28,288 INFO L132 encePairwiseOnDemand]: 107/117 looper letters, 3 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2021-12-21 14:58:28,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 205 flow [2021-12-21 14:58:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 14:58:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 14:58:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 219 transitions. [2021-12-21 14:58:28,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9358974358974359 [2021-12-21 14:58:28,298 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 219 transitions. [2021-12-21 14:58:28,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 219 transitions. [2021-12-21 14:58:28,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:28,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 219 transitions. [2021-12-21 14:58:28,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,306 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,308 INFO L186 Difference]: Start difference. First operand has 92 places, 105 transitions, 219 flow. Second operand 2 states and 219 transitions. [2021-12-21 14:58:28,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 205 flow [2021-12-21 14:58:28,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 200 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-21 14:58:28,319 INFO L242 Difference]: Finished difference. Result has 90 places, 95 transitions, 194 flow [2021-12-21 14:58:28,321 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=194, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2021-12-21 14:58:28,325 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, -2 predicate places. [2021-12-21 14:58:28,325 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 194 flow [2021-12-21 14:58:28,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,326 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:28,326 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:28,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:58:28,326 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:28,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash 894696772, now seen corresponding path program 1 times [2021-12-21 14:58:28,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:28,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320334908] [2021-12-21 14:58:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:28,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:28,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:28,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320334908] [2021-12-21 14:58:28,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320334908] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:28,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:28,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:58:28,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739720870] [2021-12-21 14:58:28,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:28,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:58:28,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:28,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:58:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:58:28,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2021-12-21 14:58:28,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:28,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2021-12-21 14:58:28,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:28,436 INFO L129 PetriNetUnfolder]: 34/213 cut-off events. [2021-12-21 14:58:28,437 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-21 14:58:28,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 213 events. 34/213 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 709 event pairs, 4 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 265. Up to 24 conditions per place. [2021-12-21 14:58:28,439 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 11 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2021-12-21 14:58:28,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 99 transitions, 231 flow [2021-12-21 14:58:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:58:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-21 14:58:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-12-21 14:58:28,441 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8660968660968661 [2021-12-21 14:58:28,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-12-21 14:58:28,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-12-21 14:58:28,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:28,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-12-21 14:58:28,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,445 INFO L186 Difference]: Start difference. First operand has 90 places, 95 transitions, 194 flow. Second operand 3 states and 304 transitions. [2021-12-21 14:58:28,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 99 transitions, 231 flow [2021-12-21 14:58:28,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 99 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 14:58:28,447 INFO L242 Difference]: Finished difference. Result has 94 places, 96 transitions, 214 flow [2021-12-21 14:58:28,448 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2021-12-21 14:58:28,448 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 2 predicate places. [2021-12-21 14:58:28,448 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 214 flow [2021-12-21 14:58:28,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:28,449 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:28,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:58:28,449 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash 378899323, now seen corresponding path program 1 times [2021-12-21 14:58:28,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:28,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236248549] [2021-12-21 14:58:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:28,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:28,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:28,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236248549] [2021-12-21 14:58:28,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236248549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:28,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:28,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:58:28,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911733060] [2021-12-21 14:58:28,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:28,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:58:28,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:58:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:58:28,490 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2021-12-21 14:58:28,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:28,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2021-12-21 14:58:28,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:28,538 INFO L129 PetriNetUnfolder]: 27/191 cut-off events. [2021-12-21 14:58:28,539 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-12-21 14:58:28,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 191 events. 27/191 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 589 event pairs, 5 based on Foata normal form. 7/175 useless extension candidates. Maximal degree in co-relation 255. Up to 22 conditions per place. [2021-12-21 14:58:28,540 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 10 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2021-12-21 14:58:28,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 241 flow [2021-12-21 14:58:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:58:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-21 14:58:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2021-12-21 14:58:28,543 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8603988603988604 [2021-12-21 14:58:28,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2021-12-21 14:58:28,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2021-12-21 14:58:28,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:28,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2021-12-21 14:58:28,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,546 INFO L186 Difference]: Start difference. First operand has 94 places, 96 transitions, 214 flow. Second operand 3 states and 302 transitions. [2021-12-21 14:58:28,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 241 flow [2021-12-21 14:58:28,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-21 14:58:28,549 INFO L242 Difference]: Finished difference. Result has 95 places, 96 transitions, 218 flow [2021-12-21 14:58:28,549 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2021-12-21 14:58:28,550 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2021-12-21 14:58:28,550 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 218 flow [2021-12-21 14:58:28,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,550 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:28,550 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:28,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:58:28,551 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:28,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:28,551 INFO L85 PathProgramCache]: Analyzing trace with hash 412261863, now seen corresponding path program 1 times [2021-12-21 14:58:28,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:28,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132398240] [2021-12-21 14:58:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:28,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:28,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:28,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132398240] [2021-12-21 14:58:28,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132398240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:28,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:28,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 14:58:28,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701403237] [2021-12-21 14:58:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:28,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 14:58:28,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 14:58:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 14:58:28,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2021-12-21 14:58:28,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:28,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2021-12-21 14:58:28,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:28,773 INFO L129 PetriNetUnfolder]: 195/694 cut-off events. [2021-12-21 14:58:28,774 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2021-12-21 14:58:28,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 694 events. 195/694 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4130 event pairs, 79 based on Foata normal form. 0/596 useless extension candidates. Maximal degree in co-relation 1095. Up to 220 conditions per place. [2021-12-21 14:58:28,779 INFO L132 encePairwiseOnDemand]: 100/117 looper letters, 33 selfloop transitions, 6 changer transitions 31/138 dead transitions. [2021-12-21 14:58:28,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 138 transitions, 445 flow [2021-12-21 14:58:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:58:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 14:58:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2021-12-21 14:58:28,785 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-12-21 14:58:28,785 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2021-12-21 14:58:28,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2021-12-21 14:58:28,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:28,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2021-12-21 14:58:28,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,791 INFO L186 Difference]: Start difference. First operand has 95 places, 96 transitions, 218 flow. Second operand 5 states and 470 transitions. [2021-12-21 14:58:28,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 138 transitions, 445 flow [2021-12-21 14:58:28,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-21 14:58:28,798 INFO L242 Difference]: Finished difference. Result has 101 places, 99 transitions, 286 flow [2021-12-21 14:58:28,798 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2021-12-21 14:58:28,800 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2021-12-21 14:58:28,800 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 286 flow [2021-12-21 14:58:28,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,800 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:28,801 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:28,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:58:28,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:28,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:28,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1312454881, now seen corresponding path program 2 times [2021-12-21 14:58:28,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:28,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882160987] [2021-12-21 14:58:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:28,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:28,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:28,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882160987] [2021-12-21 14:58:28,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882160987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:28,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:28,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 14:58:28,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232319774] [2021-12-21 14:58:28,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:28,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 14:58:28,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 14:58:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 14:58:28,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2021-12-21 14:58:28,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:28,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:28,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2021-12-21 14:58:28,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:29,001 INFO L129 PetriNetUnfolder]: 246/804 cut-off events. [2021-12-21 14:58:29,001 INFO L130 PetriNetUnfolder]: For 126/128 co-relation queries the response was YES. [2021-12-21 14:58:29,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 804 events. 246/804 cut-off events. For 126/128 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5008 event pairs, 91 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 1612. Up to 289 conditions per place. [2021-12-21 14:58:29,005 INFO L132 encePairwiseOnDemand]: 100/117 looper letters, 41 selfloop transitions, 13 changer transitions 18/143 dead transitions. [2021-12-21 14:58:29,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 143 transitions, 523 flow [2021-12-21 14:58:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:58:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 14:58:29,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2021-12-21 14:58:29,007 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8068376068376069 [2021-12-21 14:58:29,007 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2021-12-21 14:58:29,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2021-12-21 14:58:29,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:29,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2021-12-21 14:58:29,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:29,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:29,010 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:29,011 INFO L186 Difference]: Start difference. First operand has 101 places, 99 transitions, 286 flow. Second operand 5 states and 472 transitions. [2021-12-21 14:58:29,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 143 transitions, 523 flow [2021-12-21 14:58:29,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 143 transitions, 501 flow, removed 11 selfloop flow, removed 0 redundant places. [2021-12-21 14:58:29,015 INFO L242 Difference]: Finished difference. Result has 109 places, 110 transitions, 386 flow [2021-12-21 14:58:29,015 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=109, PETRI_TRANSITIONS=110} [2021-12-21 14:58:29,016 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 17 predicate places. [2021-12-21 14:58:29,016 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 110 transitions, 386 flow [2021-12-21 14:58:29,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:29,017 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:29,017 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:29,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:58:29,017 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:29,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash -280044353, now seen corresponding path program 3 times [2021-12-21 14:58:29,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:29,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406820421] [2021-12-21 14:58:29,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:29,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:29,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:29,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406820421] [2021-12-21 14:58:29,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406820421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:29,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:29,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 14:58:29,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126627271] [2021-12-21 14:58:29,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:29,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 14:58:29,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 14:58:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 14:58:29,050 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2021-12-21 14:58:29,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:29,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:29,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2021-12-21 14:58:29,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:29,184 INFO L129 PetriNetUnfolder]: 241/801 cut-off events. [2021-12-21 14:58:29,184 INFO L130 PetriNetUnfolder]: For 409/414 co-relation queries the response was YES. [2021-12-21 14:58:29,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 801 events. 241/801 cut-off events. For 409/414 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4956 event pairs, 65 based on Foata normal form. 15/764 useless extension candidates. Maximal degree in co-relation 1876. Up to 254 conditions per place. [2021-12-21 14:58:29,188 INFO L132 encePairwiseOnDemand]: 100/117 looper letters, 0 selfloop transitions, 0 changer transitions 152/152 dead transitions. [2021-12-21 14:58:29,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 152 transitions, 755 flow [2021-12-21 14:58:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:58:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 14:58:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2021-12-21 14:58:29,189 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-12-21 14:58:29,189 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2021-12-21 14:58:29,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2021-12-21 14:58:29,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:29,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2021-12-21 14:58:29,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:29,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:29,192 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:29,192 INFO L186 Difference]: Start difference. First operand has 109 places, 110 transitions, 386 flow. Second operand 5 states and 470 transitions. [2021-12-21 14:58:29,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 152 transitions, 755 flow [2021-12-21 14:58:29,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 152 transitions, 721 flow, removed 16 selfloop flow, removed 1 redundant places. [2021-12-21 14:58:29,197 INFO L242 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2021-12-21 14:58:29,197 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2021-12-21 14:58:29,197 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2021-12-21 14:58:29,197 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2021-12-21 14:58:29,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:29,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-12-21 14:58:29,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-12-21 14:58:29,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-12-21 14:58:29,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-12-21 14:58:29,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-12-21 14:58:29,201 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-12-21 14:58:29,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:58:29,203 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2021-12-21 14:58:29,206 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-21 14:58:29,206 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 14:58:29,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 02:58:29 BasicIcfg [2021-12-21 14:58:29,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 14:58:29,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 14:58:29,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 14:58:29,209 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 14:58:29,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:58:27" (3/4) ... [2021-12-21 14:58:29,210 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 14:58:29,214 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-12-21 14:58:29,214 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-12-21 14:58:29,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-12-21 14:58:29,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-21 14:58:29,217 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 14:58:29,217 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 14:58:29,233 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 14:58:29,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 14:58:29,234 INFO L158 Benchmark]: Toolchain (without parser) took 2172.38ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 104.8MB in the beginning and 76.9MB in the end (delta: 27.9MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. [2021-12-21 14:58:29,234 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 58.7MB in the beginning and 58.6MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:58:29,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.82ms. Allocated memory is still 136.3MB. Free memory was 104.8MB in the beginning and 101.8MB in the end (delta: 3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 14:58:29,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.22ms. Allocated memory is still 136.3MB. Free memory was 101.8MB in the beginning and 99.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:58:29,235 INFO L158 Benchmark]: Boogie Preprocessor took 42.36ms. Allocated memory is still 136.3MB. Free memory was 99.7MB in the beginning and 98.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:58:29,235 INFO L158 Benchmark]: RCFGBuilder took 316.89ms. Allocated memory is still 136.3MB. Free memory was 98.1MB in the beginning and 85.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 14:58:29,236 INFO L158 Benchmark]: TraceAbstraction took 1334.70ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 84.5MB in the beginning and 79.1MB in the end (delta: 5.4MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2021-12-21 14:58:29,236 INFO L158 Benchmark]: Witness Printer took 24.91ms. Allocated memory is still 180.4MB. Free memory was 79.1MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:58:29,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 58.7MB in the beginning and 58.6MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.82ms. Allocated memory is still 136.3MB. Free memory was 104.8MB in the beginning and 101.8MB in the end (delta: 3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.22ms. Allocated memory is still 136.3MB. Free memory was 101.8MB in the beginning and 99.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.36ms. Allocated memory is still 136.3MB. Free memory was 99.7MB in the beginning and 98.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.89ms. Allocated memory is still 136.3MB. Free memory was 98.1MB in the beginning and 85.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1334.70ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 84.5MB in the beginning and 79.1MB in the end (delta: 5.4MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * Witness Printer took 24.91ms. Allocated memory is still 180.4MB. Free memory was 79.1MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 154 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 109 mSDsluCounter, 181 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 288 IncrementalHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 133 mSDtfsCounter, 288 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 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! [2021-12-21 14:58:29,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE