./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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-wmm/safe037_pso.opt.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 6b3c250012519fd938045a9de2b2041e2cefaa93 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 14:42:36,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 14:42:36,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 14:42:36,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 14:42:36,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 14:42:36,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 14:42:36,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 14:42:36,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 14:42:36,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 14:42:36,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 14:42:36,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 14:42:36,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 14:42:36,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 14:42:36,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 14:42:36,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 14:42:36,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 14:42:36,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 14:42:36,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 14:42:36,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 14:42:36,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 14:42:36,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 14:42:36,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 14:42:36,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 14:42:36,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 14:42:36,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 14:42:36,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 14:42:36,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 14:42:36,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 14:42:36,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 14:42:36,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 14:42:36,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 14:42:36,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 14:42:36,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 14:42:36,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 14:42:36,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 14:42:36,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 14:42:36,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 14:42:36,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 14:42:36,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 14:42:36,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 14:42:36,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 14:42:36,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 14:42:36,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 14:42:36,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 14:42:36,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 14:42:36,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 14:42:36,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 14:42:36,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 14:42:36,460 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 14:42:36,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 14:42:36,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 14:42:36,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 14:42:36,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 14:42:36,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 14:42:36,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 14:42:36,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 14:42:36,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 14:42:36,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 14:42:36,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 14:42:36,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 14:42:36,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 14:42:36,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 14:42:36,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 14:42:36,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 14:42:36,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:42:36,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 14:42:36,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 14:42:36,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 14:42:36,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 14:42:36,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 14:42:36,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 14:42:36,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 14:42:36,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3c250012519fd938045a9de2b2041e2cefaa93 [2021-08-26 14:42:36,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 14:42:36,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 14:42:36,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 14:42:36,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 14:42:36,741 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 14:42:36,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i [2021-08-26 14:42:36,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9035c573/fe338c0abf014c5b8e00f0510848cbf6/FLAGdd409e4ad [2021-08-26 14:42:37,219 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 14:42:37,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i [2021-08-26 14:42:37,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9035c573/fe338c0abf014c5b8e00f0510848cbf6/FLAGdd409e4ad [2021-08-26 14:42:37,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9035c573/fe338c0abf014c5b8e00f0510848cbf6 [2021-08-26 14:42:37,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 14:42:37,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 14:42:37,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 14:42:37,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 14:42:37,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 14:42:37,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ff3eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37, skipping insertion in model container [2021-08-26 14:42:37,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 14:42:37,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 14:42:37,393 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i[949,962] [2021-08-26 14:42:37,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:42:37,494 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 14:42:37,502 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i[949,962] [2021-08-26 14:42:37,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:42:37,558 INFO L208 MainTranslator]: Completed translation [2021-08-26 14:42:37,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37 WrapperNode [2021-08-26 14:42:37,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 14:42:37,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 14:42:37,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 14:42:37,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 14:42:37,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 14:42:37,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 14:42:37,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 14:42:37,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 14:42:37,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 14:42:37,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 14:42:37,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 14:42:37,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 14:42:37,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (1/1) ... [2021-08-26 14:42:37,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:42:37,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:42:37,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 14:42:37,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 14:42:37,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 14:42:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-26 14:42:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 14:42:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 14:42:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-26 14:42:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-26 14:42:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-26 14:42:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-26 14:42:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-26 14:42:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-26 14:42:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 14:42:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-26 14:42:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 14:42:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 14:42:37,701 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-26 14:42:38,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 14:42:38,008 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-26 14:42:38,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:42:38 BoogieIcfgContainer [2021-08-26 14:42:38,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 14:42:38,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 14:42:38,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 14:42:38,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 14:42:38,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:42:37" (1/3) ... [2021-08-26 14:42:38,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ada023a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:42:38, skipping insertion in model container [2021-08-26 14:42:38,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:37" (2/3) ... [2021-08-26 14:42:38,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ada023a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:42:38, skipping insertion in model container [2021-08-26 14:42:38,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:42:38" (3/3) ... [2021-08-26 14:42:38,014 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_pso.opt.i [2021-08-26 14:42:38,017 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-26 14:42:38,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 14:42:38,018 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 14:42:38,018 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-26 14:42:38,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,042 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,042 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,043 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,043 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,044 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,044 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,045 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,045 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,046 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,046 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,048 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,052 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,053 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,055 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,055 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:38,057 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-26 14:42:38,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 14:42:38,086 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 14:42:38,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-26 14:42:38,094 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-26 14:42:38,101 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 85 transitions, 185 flow [2021-08-26 14:42:38,102 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 85 transitions, 185 flow [2021-08-26 14:42:38,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2021-08-26 14:42:38,128 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-08-26 14:42:38,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-26 14:42:38,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-26 14:42:38,133 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-08-26 14:42:40,662 INFO L131 LiptonReduction]: Checked pairs total: 2941 [2021-08-26 14:42:40,663 INFO L133 LiptonReduction]: Total number of compositions: 75 [2021-08-26 14:42:40,669 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-08-26 14:42:40,690 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 14:42:40,695 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:40,696 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:40,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:40,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:40,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1629408921, now seen corresponding path program 1 times [2021-08-26 14:42:40,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:40,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860900014] [2021-08-26 14:42:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:40,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:40,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:40,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860900014] [2021-08-26 14:42:40,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860900014] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:40,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:40,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:42:40,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649954200] [2021-08-26 14:42:40,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:42:40,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:40,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:42:40,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:40,964 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:41,015 INFO L93 Difference]: Finished difference Result 244 states and 611 transitions. [2021-08-26 14:42:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:42:41,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-26 14:42:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:41,028 INFO L225 Difference]: With dead ends: 244 [2021-08-26 14:42:41,028 INFO L226 Difference]: Without dead ends: 180 [2021-08-26 14:42:41,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-08-26 14:42:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-08-26 14:42:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.458100558659218) internal successors, (440), 179 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2021-08-26 14:42:41,076 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 8 [2021-08-26 14:42:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:41,077 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2021-08-26 14:42:41,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2021-08-26 14:42:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 14:42:41,078 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:41,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:41,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 14:42:41,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:41,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1329339185, now seen corresponding path program 1 times [2021-08-26 14:42:41,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:41,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261254016] [2021-08-26 14:42:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:41,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:41,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:41,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261254016] [2021-08-26 14:42:41,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261254016] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:41,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:41,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:42:41,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96057584] [2021-08-26 14:42:41,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 14:42:41,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:41,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 14:42:41,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:41,146 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:41,183 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2021-08-26 14:42:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 14:42:41,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 14:42:41,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:41,185 INFO L225 Difference]: With dead ends: 163 [2021-08-26 14:42:41,185 INFO L226 Difference]: Without dead ends: 126 [2021-08-26 14:42:41,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:42:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-08-26 14:42:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-08-26 14:42:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.224) internal successors, (278), 125 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2021-08-26 14:42:41,199 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2021-08-26 14:42:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:41,199 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2021-08-26 14:42:41,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2021-08-26 14:42:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 14:42:41,201 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:41,201 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:41,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 14:42:41,202 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:41,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1520054849, now seen corresponding path program 1 times [2021-08-26 14:42:41,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:41,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028516802] [2021-08-26 14:42:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:41,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:41,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:41,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028516802] [2021-08-26 14:42:41,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028516802] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:41,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:41,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:42:41,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023633686] [2021-08-26 14:42:41,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:42:41,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:41,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:42:41,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:41,245 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:41,255 INFO L93 Difference]: Finished difference Result 159 states and 338 transitions. [2021-08-26 14:42:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:42:41,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 14:42:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:41,257 INFO L225 Difference]: With dead ends: 159 [2021-08-26 14:42:41,257 INFO L226 Difference]: Without dead ends: 128 [2021-08-26 14:42:41,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-26 14:42:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-08-26 14:42:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.12) internal successors, (265), 125 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 265 transitions. [2021-08-26 14:42:41,264 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 265 transitions. Word has length 14 [2021-08-26 14:42:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:41,264 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 265 transitions. [2021-08-26 14:42:41,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 265 transitions. [2021-08-26 14:42:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 14:42:41,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:41,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:41,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 14:42:41,269 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:41,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1515257537, now seen corresponding path program 1 times [2021-08-26 14:42:41,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:41,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364363087] [2021-08-26 14:42:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:41,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:41,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:41,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364363087] [2021-08-26 14:42:41,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364363087] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:41,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:41,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 14:42:41,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629645167] [2021-08-26 14:42:41,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 14:42:41,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:41,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 14:42:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:42:41,349 INFO L87 Difference]: Start difference. First operand 126 states and 265 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:41,383 INFO L93 Difference]: Finished difference Result 118 states and 247 transitions. [2021-08-26 14:42:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 14:42:41,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 14:42:41,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:41,384 INFO L225 Difference]: With dead ends: 118 [2021-08-26 14:42:41,384 INFO L226 Difference]: Without dead ends: 54 [2021-08-26 14:42:41,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-26 14:42:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-26 14:42:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-26 14:42:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.849056603773585) internal successors, (98), 53 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2021-08-26 14:42:41,386 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 14 [2021-08-26 14:42:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:41,386 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2021-08-26 14:42:41,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2021-08-26 14:42:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 14:42:41,387 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:41,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:41,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 14:42:41,387 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1723964875, now seen corresponding path program 1 times [2021-08-26 14:42:41,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:41,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139670554] [2021-08-26 14:42:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:41,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:41,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:41,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139670554] [2021-08-26 14:42:41,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139670554] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:41,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:41,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:42:41,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805847110] [2021-08-26 14:42:41,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:42:41,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:42:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:41,420 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:41,429 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2021-08-26 14:42:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:42:41,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 14:42:41,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:41,430 INFO L225 Difference]: With dead ends: 73 [2021-08-26 14:42:41,430 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 14:42:41,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 14:42:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-26 14:42:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2021-08-26 14:42:41,431 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2021-08-26 14:42:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:41,432 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-08-26 14:42:41,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2021-08-26 14:42:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 14:42:41,432 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:41,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:41,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 14:42:41,433 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:41,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:41,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1536960851, now seen corresponding path program 2 times [2021-08-26 14:42:41,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:41,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263684424] [2021-08-26 14:42:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:41,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:41,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:41,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263684424] [2021-08-26 14:42:41,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263684424] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:41,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:41,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:42:41,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822046270] [2021-08-26 14:42:41,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:42:41,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:42:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:41,482 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:41,489 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2021-08-26 14:42:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:42:41,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 14:42:41,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:41,489 INFO L225 Difference]: With dead ends: 35 [2021-08-26 14:42:41,489 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 14:42:41,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 14:42:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 14:42:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 14:42:41,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-26 14:42:41,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:41,491 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 14:42:41,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:41,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 14:42:41,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 14:42:41,493 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:42:41,493 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-26 14:42:41,493 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-26 14:42:41,493 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-26 14:42:41,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 14:42:41,496 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-26 14:42:41,496 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 14:42:41,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:42:41 BasicIcfg [2021-08-26 14:42:41,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 14:42:41,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 14:42:41,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 14:42:41,498 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 14:42:41,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:42:38" (3/4) ... [2021-08-26 14:42:41,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 14:42:41,504 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-26 14:42:41,504 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-26 14:42:41,504 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-26 14:42:41,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-26 14:42:41,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 14:42:41,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:42:41,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:42:41,545 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 14:42:41,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 14:42:41,546 INFO L168 Benchmark]: Toolchain (without parser) took 4296.56 ms. Allocated memory was 60.8 MB in the beginning and 134.2 MB in the end (delta: 73.4 MB). Free memory was 37.5 MB in the beginning and 47.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:41,547 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 41.3 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:42:41,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.03 ms. Allocated memory is still 60.8 MB. Free memory was 37.3 MB in the beginning and 33.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:41,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.62 ms. Allocated memory is still 60.8 MB. Free memory was 33.7 MB in the beginning and 31.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:41,548 INFO L168 Benchmark]: Boogie Preprocessor took 39.04 ms. Allocated memory is still 60.8 MB. Free memory was 31.6 MB in the beginning and 30.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:42:41,548 INFO L168 Benchmark]: RCFGBuilder took 361.03 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 30.2 MB in the beginning and 38.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:41,548 INFO L168 Benchmark]: TraceAbstraction took 3486.59 ms. Allocated memory was 75.5 MB in the beginning and 134.2 MB in the end (delta: 58.7 MB). Free memory was 38.2 MB in the beginning and 49.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:41,548 INFO L168 Benchmark]: Witness Printer took 48.14 ms. Allocated memory is still 134.2 MB. Free memory was 49.7 MB in the beginning and 47.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:41,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 41.3 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.03 ms. Allocated memory is still 60.8 MB. Free memory was 37.3 MB in the beginning and 33.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.62 ms. Allocated memory is still 60.8 MB. Free memory was 33.7 MB in the beginning and 31.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.04 ms. Allocated memory is still 60.8 MB. Free memory was 31.6 MB in the beginning and 30.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 361.03 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 30.2 MB in the beginning and 38.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3486.59 ms. Allocated memory was 75.5 MB in the beginning and 134.2 MB in the end (delta: 58.7 MB). Free memory was 38.2 MB in the beginning and 49.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. * Witness Printer took 48.14 ms. Allocated memory is still 134.2 MB. Free memory was 49.7 MB in the beginning and 47.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2560.8ms, 93 PlacesBefore, 31 PlacesAfterwards, 85 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 2941 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1782, positive: 1681, positive conditional: 0, positive unconditional: 1681, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1115, positive: 1065, positive conditional: 0, positive unconditional: 1065, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1115, positive: 1059, positive conditional: 0, positive unconditional: 1059, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 128, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1782, positive: 616, positive conditional: 0, positive unconditional: 616, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 1115, unknown conditional: 0, unknown unconditional: 1115] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3413.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 12.9ms, AutomataDifference: 186.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2603.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 130 SDtfs, 132 SDslu, 190 SDs, 0 SdLazy, 87 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.2ms SsaConstructionTime, 122.4ms SatisfiabilityAnalysisTime, 262.8ms InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-26 14:42:41,576 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...