./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 997cd7c3 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/safe014_tso.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 607361a82234b19b631bd46eb1cc02ecf35700c5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-997cd7c-m [2021-09-22 14:49:47,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:49:47,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:49:47,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:49:47,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:49:47,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:49:47,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:49:47,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:49:47,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:49:47,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:49:47,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:49:47,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:49:47,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:49:47,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:49:47,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:49:47,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:49:47,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:49:47,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:49:47,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:49:47,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:49:47,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:49:47,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:49:47,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:49:47,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:49:47,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:49:47,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:49:47,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:49:47,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:49:47,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:49:47,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:49:47,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:49:47,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:49:47,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:49:47,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:49:47,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:49:47,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:49:47,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:49:47,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:49:47,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:49:47,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:49:47,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:49:47,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:49:47,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:49:47,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:49:47,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:49:47,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:49:47,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:49:47,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:49:47,705 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:49:47,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:49:47,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:49:47,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:49:47,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:49:47,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:49:47,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:49:47,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:49:47,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:49:47,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:49:47,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:49:47,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:49:47,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:49:47,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:49:47,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:49:47,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:49:47,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:49:47,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:49:47,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:49:47,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:49:47,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:49:47,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:49:47,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:49:47,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:49:47,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 607361a82234b19b631bd46eb1cc02ecf35700c5 [2021-09-22 14:49:47,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:49:47,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:49:47,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:49:47,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:49:47,984 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:49:47,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_tso.opt.i [2021-09-22 14:49:48,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97103e80b/ffc7a9266a7e44e5a76e83a5e1ab73d1/FLAG27700b1ea [2021-09-22 14:49:48,424 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:49:48,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_tso.opt.i [2021-09-22 14:49:48,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97103e80b/ffc7a9266a7e44e5a76e83a5e1ab73d1/FLAG27700b1ea [2021-09-22 14:49:48,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97103e80b/ffc7a9266a7e44e5a76e83a5e1ab73d1 [2021-09-22 14:49:48,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:49:48,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:49:48,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:49:48,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:49:48,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:49:48,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4389694c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48, skipping insertion in model container [2021-09-22 14:49:48,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:49:48,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:49:48,570 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/safe014_tso.opt.i[949,962] [2021-09-22 14:49:48,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:49:48,732 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:49:48,740 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/safe014_tso.opt.i[949,962] [2021-09-22 14:49:48,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:49:48,792 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:49:48,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48 WrapperNode [2021-09-22 14:49:48,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:49:48,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:49:48,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:49:48,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:49:48,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:49:48,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:49:48,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:49:48,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:49:48,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:49:48,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:49:48,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:49:48,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:49:48,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (1/1) ... [2021-09-22 14:49:48,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:49:48,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:49:48,897 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) [2021-09-22 14:49:48,917 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 [2021-09-22 14:49:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:49:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-09-22 14:49:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:49:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:49:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-09-22 14:49:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-09-22 14:49:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-09-22 14:49:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-09-22 14:49:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-09-22 14:49:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-09-22 14:49:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:49:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-09-22 14:49:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:49:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:49:48,932 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:49:49,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:49:49,246 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-09-22 14:49:49,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:49:49 BoogieIcfgContainer [2021-09-22 14:49:49,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:49:49,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:49:49,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:49:49,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:49:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:49:48" (1/3) ... [2021-09-22 14:49:49,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4874b311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:49:49, skipping insertion in model container [2021-09-22 14:49:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:49:48" (2/3) ... [2021-09-22 14:49:49,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4874b311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:49:49, skipping insertion in model container [2021-09-22 14:49:49,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:49:49" (3/3) ... [2021-09-22 14:49:49,253 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2021-09-22 14:49:49,257 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:49:49,257 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:49:49,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-09-22 14:49:49,258 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:49:49,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,287 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,293 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,293 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,294 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,297 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,297 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,298 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,298 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,301 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,301 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,301 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,301 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:49:49,308 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-09-22 14:49:49,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:49:49,337 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 [2021-09-22 14:49:49,337 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-09-22 14:49:49,345 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:49:49,351 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-09-22 14:49:49,352 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-09-22 14:49:49,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-09-22 14:49:49,382 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-09-22 14:49:49,382 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-09-22 14:49:49,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-09-22 14:49:49,385 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-09-22 14:49:51,310 INFO L131 LiptonReduction]: Checked pairs total: 2982 [2021-09-22 14:49:51,310 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-09-22 14:49:51,315 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-09-22 14:49:51,330 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) [2021-09-22 14:49:51,332 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) [2021-09-22 14:49:51,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-09-22 14:49:51,335 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:51,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:51,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:51,339 INFO L82 PathProgramCache]: Analyzing trace with hash -82956535, now seen corresponding path program 1 times [2021-09-22 14:49:51,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:51,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776929647] [2021-09-22 14:49:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:51,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:51,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:51,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776929647] [2021-09-22 14:49:51,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776929647] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:51,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:51,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-09-22 14:49:51,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408695793] [2021-09-22 14:49:51,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:49:51,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:49:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:49:51,599 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 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-09-22 14:49:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:51,643 INFO L93 Difference]: Finished difference Result 347 states and 920 transitions. [2021-09-22 14:49:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:49:51,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2021-09-22 14:49:51,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:51,659 INFO L225 Difference]: With dead ends: 347 [2021-09-22 14:49:51,659 INFO L226 Difference]: Without dead ends: 323 [2021-09-22 14:49:51,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:49:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-09-22 14:49:51,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 288. [2021-09-22 14:49:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.7282229965156795) internal successors, (783), 287 states have internal predecessors, (783), 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) [2021-09-22 14:49:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 783 transitions. [2021-09-22 14:49:51,701 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 783 transitions. Word has length 8 [2021-09-22 14:49:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:51,701 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 783 transitions. [2021-09-22 14:49:51,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-09-22 14:49:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 783 transitions. [2021-09-22 14:49:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:49:51,702 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:51,702 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:51,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:49:51,703 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:51,703 INFO L82 PathProgramCache]: Analyzing trace with hash 788497753, now seen corresponding path program 1 times [2021-09-22 14:49:51,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:51,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692089300] [2021-09-22 14:49:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:51,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:51,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:51,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692089300] [2021-09-22 14:49:51,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692089300] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:51,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:51,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:49:51,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791014223] [2021-09-22 14:49:51,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:49:51,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:51,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:49:51,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:51,750 INFO L87 Difference]: Start difference. First operand 288 states and 783 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-09-22 14:49:51,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:51,763 INFO L93 Difference]: Finished difference Result 304 states and 801 transitions. [2021-09-22 14:49:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:49:51,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-09-22 14:49:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:51,765 INFO L225 Difference]: With dead ends: 304 [2021-09-22 14:49:51,765 INFO L226 Difference]: Without dead ends: 304 [2021-09-22 14:49:51,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-09-22 14:49:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-09-22 14:49:51,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.727272727272727) internal successors, (690), 253 states have internal predecessors, (690), 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) [2021-09-22 14:49:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 690 transitions. [2021-09-22 14:49:51,775 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 690 transitions. Word has length 9 [2021-09-22 14:49:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:51,775 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 690 transitions. [2021-09-22 14:49:51,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-09-22 14:49:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 690 transitions. [2021-09-22 14:49:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:49:51,776 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:51,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:51,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-09-22 14:49:51,777 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:51,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:51,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1723286795, now seen corresponding path program 1 times [2021-09-22 14:49:51,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:51,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239711494] [2021-09-22 14:49:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:51,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:51,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:51,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239711494] [2021-09-22 14:49:51,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239711494] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:51,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:51,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:49:51,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014301586] [2021-09-22 14:49:51,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:49:51,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:49:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:51,817 INFO L87 Difference]: Start difference. First operand 254 states and 690 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-09-22 14:49:51,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:51,829 INFO L93 Difference]: Finished difference Result 289 states and 752 transitions. [2021-09-22 14:49:51,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:49:51,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-09-22 14:49:51,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:51,831 INFO L225 Difference]: With dead ends: 289 [2021-09-22 14:49:51,831 INFO L226 Difference]: Without dead ends: 289 [2021-09-22 14:49:51,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-09-22 14:49:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 236. [2021-09-22 14:49:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.6808510638297873) internal successors, (630), 235 states have internal predecessors, (630), 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) [2021-09-22 14:49:51,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 630 transitions. [2021-09-22 14:49:51,837 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 630 transitions. Word has length 9 [2021-09-22 14:49:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:51,838 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 630 transitions. [2021-09-22 14:49:51,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-09-22 14:49:51,838 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 630 transitions. [2021-09-22 14:49:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-09-22 14:49:51,839 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:51,839 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:51,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-09-22 14:49:51,839 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:51,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:51,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1326401349, now seen corresponding path program 1 times [2021-09-22 14:49:51,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:51,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108863849] [2021-09-22 14:49:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:51,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:51,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:51,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108863849] [2021-09-22 14:49:51,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108863849] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:51,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:51,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:49:51,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991227871] [2021-09-22 14:49:51,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:49:51,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:51,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:49:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:51,876 INFO L87 Difference]: Start difference. First operand 236 states and 630 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:51,886 INFO L93 Difference]: Finished difference Result 271 states and 701 transitions. [2021-09-22 14:49:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:49:51,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-09-22 14:49:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:51,888 INFO L225 Difference]: With dead ends: 271 [2021-09-22 14:49:51,888 INFO L226 Difference]: Without dead ends: 271 [2021-09-22 14:49:51,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-09-22 14:49:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 215. [2021-09-22 14:49:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.6542056074766354) internal successors, (568), 214 states have internal predecessors, (568), 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) [2021-09-22 14:49:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 568 transitions. [2021-09-22 14:49:51,894 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 568 transitions. Word has length 10 [2021-09-22 14:49:51,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:51,894 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 568 transitions. [2021-09-22 14:49:51,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 568 transitions. [2021-09-22 14:49:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-09-22 14:49:51,895 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:51,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:51,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-09-22 14:49:51,896 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:51,896 INFO L82 PathProgramCache]: Analyzing trace with hash 855965049, now seen corresponding path program 1 times [2021-09-22 14:49:51,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:51,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476575774] [2021-09-22 14:49:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:51,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:51,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:51,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476575774] [2021-09-22 14:49:51,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476575774] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:51,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:51,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:49:51,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20358236] [2021-09-22 14:49:51,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:49:51,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:49:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:51,942 INFO L87 Difference]: Start difference. First operand 215 states and 568 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) 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) [2021-09-22 14:49:51,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:51,954 INFO L93 Difference]: Finished difference Result 246 states and 626 transitions. [2021-09-22 14:49:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:49:51,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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 [2021-09-22 14:49:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:51,955 INFO L225 Difference]: With dead ends: 246 [2021-09-22 14:49:51,956 INFO L226 Difference]: Without dead ends: 246 [2021-09-22 14:49:51,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-09-22 14:49:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 188. [2021-09-22 14:49:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.6042780748663104) internal successors, (487), 187 states have internal predecessors, (487), 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) [2021-09-22 14:49:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 487 transitions. [2021-09-22 14:49:51,960 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 487 transitions. Word has length 11 [2021-09-22 14:49:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:51,960 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 487 transitions. [2021-09-22 14:49:51,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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) [2021-09-22 14:49:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 487 transitions. [2021-09-22 14:49:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-09-22 14:49:51,961 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:51,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:51,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-09-22 14:49:51,962 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:51,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1240802785, now seen corresponding path program 1 times [2021-09-22 14:49:51,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:51,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316086729] [2021-09-22 14:49:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:51,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:51,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:51,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316086729] [2021-09-22 14:49:51,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316086729] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:51,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:51,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:49:51,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998294353] [2021-09-22 14:49:51,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:49:51,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:49:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:51,999 INFO L87 Difference]: Start difference. First operand 188 states and 487 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:52,013 INFO L93 Difference]: Finished difference Result 242 states and 600 transitions. [2021-09-22 14:49:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:49:52,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-09-22 14:49:52,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:52,014 INFO L225 Difference]: With dead ends: 242 [2021-09-22 14:49:52,015 INFO L226 Difference]: Without dead ends: 116 [2021-09-22 14:49:52,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:49:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-09-22 14:49:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2021-09-22 14:49:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 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) [2021-09-22 14:49:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 238 transitions. [2021-09-22 14:49:52,017 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 238 transitions. Word has length 12 [2021-09-22 14:49:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:52,018 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 238 transitions. [2021-09-22 14:49:52,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:52,018 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 238 transitions. [2021-09-22 14:49:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-09-22 14:49:52,018 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:52,018 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:52,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-09-22 14:49:52,019 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:52,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2057747285, now seen corresponding path program 1 times [2021-09-22 14:49:52,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:52,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541889274] [2021-09-22 14:49:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:52,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:52,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:52,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541889274] [2021-09-22 14:49:52,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541889274] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:52,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:52,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:49:52,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218207535] [2021-09-22 14:49:52,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:49:52,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:52,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:49:52,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:52,052 INFO L87 Difference]: Start difference. First operand 104 states and 238 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:52,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:52,067 INFO L93 Difference]: Finished difference Result 127 states and 266 transitions. [2021-09-22 14:49:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:49:52,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-09-22 14:49:52,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:52,068 INFO L225 Difference]: With dead ends: 127 [2021-09-22 14:49:52,068 INFO L226 Difference]: Without dead ends: 87 [2021-09-22 14:49:52,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-09-22 14:49:52,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-09-22 14:49:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.058139534883721) internal successors, (177), 86 states have internal predecessors, (177), 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) [2021-09-22 14:49:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 177 transitions. [2021-09-22 14:49:52,071 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 177 transitions. Word has length 13 [2021-09-22 14:49:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:52,071 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 177 transitions. [2021-09-22 14:49:52,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 177 transitions. [2021-09-22 14:49:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-09-22 14:49:52,072 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:52,072 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:52,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-09-22 14:49:52,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:52,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:52,072 INFO L82 PathProgramCache]: Analyzing trace with hash -758569011, now seen corresponding path program 1 times [2021-09-22 14:49:52,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:52,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946310347] [2021-09-22 14:49:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:52,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:52,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:52,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946310347] [2021-09-22 14:49:52,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946310347] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:52,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:52,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:49:52,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947799529] [2021-09-22 14:49:52,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:49:52,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:52,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:49:52,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:52,110 INFO L87 Difference]: Start difference. First operand 87 states and 177 transitions. Second operand has 5 states, 4 states have (on average 3.5) 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) [2021-09-22 14:49:52,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:52,132 INFO L93 Difference]: Finished difference Result 90 states and 168 transitions. [2021-09-22 14:49:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-09-22 14:49:52,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) 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 [2021-09-22 14:49:52,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:52,132 INFO L225 Difference]: With dead ends: 90 [2021-09-22 14:49:52,133 INFO L226 Difference]: Without dead ends: 65 [2021-09-22 14:49:52,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:49:52,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-09-22 14:49:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-09-22 14:49:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.796875) internal successors, (115), 64 states have internal predecessors, (115), 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) [2021-09-22 14:49:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 115 transitions. [2021-09-22 14:49:52,134 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 115 transitions. Word has length 14 [2021-09-22 14:49:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:52,135 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 115 transitions. [2021-09-22 14:49:52,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) 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) [2021-09-22 14:49:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 115 transitions. [2021-09-22 14:49:52,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-09-22 14:49:52,135 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:52,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:52,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-09-22 14:49:52,136 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:52,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2040812518, now seen corresponding path program 1 times [2021-09-22 14:49:52,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:52,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251184805] [2021-09-22 14:49:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:52,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:52,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:52,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251184805] [2021-09-22 14:49:52,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251184805] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:52,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:52,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-09-22 14:49:52,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084558837] [2021-09-22 14:49:52,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-09-22 14:49:52,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-09-22 14:49:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:49:52,170 INFO L87 Difference]: Start difference. First operand 65 states and 115 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:52,193 INFO L93 Difference]: Finished difference Result 62 states and 107 transitions. [2021-09-22 14:49:52,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-09-22 14:49:52,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-09-22 14:49:52,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:52,194 INFO L225 Difference]: With dead ends: 62 [2021-09-22 14:49:52,194 INFO L226 Difference]: Without dead ends: 38 [2021-09-22 14:49:52,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:49:52,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-09-22 14:49:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-09-22 14:49:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 37 states have internal predecessors, (62), 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) [2021-09-22 14:49:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2021-09-22 14:49:52,195 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 15 [2021-09-22 14:49:52,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:52,195 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2021-09-22 14:49:52,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:49:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2021-09-22 14:49:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-09-22 14:49:52,196 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:52,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:52,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-09-22 14:49:52,196 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:52,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:52,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1939817689, now seen corresponding path program 1 times [2021-09-22 14:49:52,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:52,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548834459] [2021-09-22 14:49:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:52,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:52,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:52,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548834459] [2021-09-22 14:49:52,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548834459] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:52,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:52,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:49:52,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63218198] [2021-09-22 14:49:52,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:49:52,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:49:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:52,220 INFO L87 Difference]: Start difference. First operand 38 states and 62 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) [2021-09-22 14:49:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:52,229 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2021-09-22 14:49:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:49:52,229 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 [2021-09-22 14:49:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:52,230 INFO L225 Difference]: With dead ends: 51 [2021-09-22 14:49:52,230 INFO L226 Difference]: Without dead ends: 30 [2021-09-22 14:49:52,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-09-22 14:49:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-09-22 14:49:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 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) [2021-09-22 14:49:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-09-22 14:49:52,231 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2021-09-22 14:49:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:52,231 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-09-22 14:49:52,232 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) [2021-09-22 14:49:52,232 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2021-09-22 14:49:52,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-09-22 14:49:52,232 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:49:52,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:49:52,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-09-22 14:49:52,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:49:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:49:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1865802105, now seen corresponding path program 2 times [2021-09-22 14:49:52,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:49:52,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170399327] [2021-09-22 14:49:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:49:52,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:49:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:49:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:49:52,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:49:52,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170399327] [2021-09-22 14:49:52,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170399327] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:49:52,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:49:52,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:49:52,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777212109] [2021-09-22 14:49:52,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:49:52,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:49:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:49:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:49:52,255 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-09-22 14:49:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:49:52,262 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2021-09-22 14:49:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:49:52,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 [2021-09-22 14:49:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:49:52,263 INFO L225 Difference]: With dead ends: 29 [2021-09-22 14:49:52,263 INFO L226 Difference]: Without dead ends: 0 [2021-09-22 14:49:52,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:49:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-09-22 14:49:52,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-09-22 14:49:52,264 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) [2021-09-22 14:49:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-09-22 14:49:52,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-09-22 14:49:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:49:52,264 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-09-22 14:49:52,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-09-22 14:49:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-09-22 14:49:52,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-09-22 14:49:52,266 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:49:52,266 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:49:52,266 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-09-22 14:49:52,267 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-09-22 14:49:52,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-09-22 14:49:52,269 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:49:52,269 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:49:52,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:49:52 BasicIcfg [2021-09-22 14:49:52,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:49:52,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:49:52,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:49:52,270 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:49:52,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:49:49" (3/4) ... [2021-09-22 14:49:52,272 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-09-22 14:49:52,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-09-22 14:49:52,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-09-22 14:49:52,276 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-09-22 14:49:52,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-09-22 14:49:52,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-09-22 14:49:52,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:49:52,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:49:52,303 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:49:52,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:49:52,305 INFO L168 Benchmark]: Toolchain (without parser) took 3849.85 ms. Allocated memory was 90.2 MB in the beginning and 151.0 MB in the end (delta: 60.8 MB). Free memory was 67.3 MB in the beginning and 57.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 70.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:52,305 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 54.5 MB. Free memory was 35.7 MB in the beginning and 35.6 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:49:52,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.07 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 63.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:52,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 90.2 MB. Free memory was 63.4 MB in the beginning and 61.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:52,306 INFO L168 Benchmark]: Boogie Preprocessor took 33.78 ms. Allocated memory is still 90.2 MB. Free memory was 61.6 MB in the beginning and 59.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:52,306 INFO L168 Benchmark]: RCFGBuilder took 370.53 ms. Allocated memory is still 90.2 MB. Free memory was 59.9 MB in the beginning and 47.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:52,306 INFO L168 Benchmark]: TraceAbstraction took 3021.31 ms. Allocated memory was 90.2 MB in the beginning and 151.0 MB in the end (delta: 60.8 MB). Free memory was 47.4 MB in the beginning and 60.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:52,306 INFO L168 Benchmark]: Witness Printer took 33.38 ms. Allocated memory is still 151.0 MB. Free memory was 60.9 MB in the beginning and 57.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:49:52,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 54.5 MB. Free memory was 35.7 MB in the beginning and 35.6 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.07 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 63.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 90.2 MB. Free memory was 63.4 MB in the beginning and 61.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.78 ms. Allocated memory is still 90.2 MB. Free memory was 61.6 MB in the beginning and 59.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 370.53 ms. Allocated memory is still 90.2 MB. Free memory was 59.9 MB in the beginning and 47.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3021.31 ms. Allocated memory was 90.2 MB in the beginning and 151.0 MB in the end (delta: 60.8 MB). Free memory was 47.4 MB in the beginning and 60.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.1 GB. * Witness Printer took 33.38 ms. Allocated memory is still 151.0 MB. Free memory was 60.9 MB in the beginning and 57.8 MB in the end (delta: 3.1 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: 1958.0ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2982 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1543, positive: 1434, positive conditional: 0, positive unconditional: 1434, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 978, positive: 927, positive conditional: 0, positive unconditional: 927, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 978, positive: 912, positive conditional: 0, positive unconditional: 912, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 66, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 65, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1543, positive: 507, positive conditional: 0, positive unconditional: 507, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 978, unknown conditional: 0, unknown unconditional: 978] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, 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, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2936.1ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 234.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1992.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 203 SDtfs, 208 SDslu, 240 SDs, 0 SdLazy, 139 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 83.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=1, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 65.4ms AutomataMinimizationTime, 11 MinimizatonAttempts, 264 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.6ms SsaConstructionTime, 125.4ms SatisfiabilityAnalysisTime, 346.2ms InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 666 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2021-09-22 14:49:52,353 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...