./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel/min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel/min-max-1.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43d79caaae5e4cf80b770688b693f7b8e96c4cb8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-04 18:44:32,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-04 18:44:32,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-04 18:44:32,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-04 18:44:32,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-04 18:44:32,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-04 18:44:32,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-04 18:44:32,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-04 18:44:32,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-04 18:44:32,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-04 18:44:32,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-04 18:44:32,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-04 18:44:32,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-04 18:44:32,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-04 18:44:32,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-04 18:44:32,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-04 18:44:32,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-04 18:44:32,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-04 18:44:32,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-04 18:44:32,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-04 18:44:32,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-04 18:44:32,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-04 18:44:32,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-04 18:44:32,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-04 18:44:32,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-04 18:44:32,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-04 18:44:32,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-04 18:44:32,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-04 18:44:32,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-04 18:44:32,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-04 18:44:32,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-04 18:44:32,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-04 18:44:32,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-04 18:44:32,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-04 18:44:32,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-04 18:44:32,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-04 18:44:32,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-04 18:44:32,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-04 18:44:32,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-04 18:44:32,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-04 18:44:32,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-04 18:44:32,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-04 18:44:32,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-04 18:44:32,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-04 18:44:32,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-04 18:44:32,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-04 18:44:32,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-04 18:44:32,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-04 18:44:32,693 INFO L138 SettingsManager]: * Use SBE=true [2021-10-04 18:44:32,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-04 18:44:32,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-04 18:44:32,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-04 18:44:32,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-04 18:44:32,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-04 18:44:32,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-04 18:44:32,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-04 18:44:32,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-04 18:44:32,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-04 18:44:32,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-04 18:44:32,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-04 18:44:32,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-04 18:44:32,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-04 18:44:32,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-04 18:44:32,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-04 18:44:32,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:44:32,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-04 18:44:32,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-04 18:44:32,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-04 18:44:32,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-04 18:44:32,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-04 18:44:32,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-04 18:44:32,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-04 18:44:32,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43d79caaae5e4cf80b770688b693f7b8e96c4cb8 [2021-10-04 18:44:33,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-04 18:44:33,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-04 18:44:33,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-04 18:44:33,271 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-04 18:44:33,271 INFO L275 PluginConnector]: CDTParser initialized [2021-10-04 18:44:33,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/min-max-1.wvr.c [2021-10-04 18:44:33,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6218d07de/0287be239a374a698f1aa4654ec27c9b/FLAG4ccd90c0d [2021-10-04 18:44:34,008 INFO L306 CDTParser]: Found 1 translation units. [2021-10-04 18:44:34,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/min-max-1.wvr.c [2021-10-04 18:44:34,009 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:44:34,009 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:44:34,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6218d07de/0287be239a374a698f1aa4654ec27c9b/FLAG4ccd90c0d [2021-10-04 18:44:34,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6218d07de/0287be239a374a698f1aa4654ec27c9b [2021-10-04 18:44:34,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-04 18:44:34,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-04 18:44:34,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-04 18:44:34,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-04 18:44:34,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-04 18:44:34,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15131040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34, skipping insertion in model container [2021-10-04 18:44:34,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-04 18:44:34,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-04 18:44:34,546 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:44:34,597 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/min-max-1.wvr.c[1633,1646] [2021-10-04 18:44:34,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:44:34,618 INFO L203 MainTranslator]: Completed pre-run [2021-10-04 18:44:34,631 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:44:34,646 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/min-max-1.wvr.c[1633,1646] [2021-10-04 18:44:34,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:44:34,667 INFO L208 MainTranslator]: Completed translation [2021-10-04 18:44:34,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34 WrapperNode [2021-10-04 18:44:34,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-04 18:44:34,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-04 18:44:34,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-04 18:44:34,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-04 18:44:34,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-04 18:44:34,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-04 18:44:34,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-04 18:44:34,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-04 18:44:34,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-04 18:44:34,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-04 18:44:34,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-04 18:44:34,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-04 18:44:34,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (1/1) ... [2021-10-04 18:44:34,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:44:34,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-04 18:44:34,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-04 18:44:34,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-04 18:44:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-04 18:44:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-04 18:44:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-04 18:44:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-04 18:44:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-04 18:44:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-04 18:44:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-04 18:44:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-04 18:44:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-04 18:44:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-04 18:44:34,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-04 18:44:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-04 18:44:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-04 18:44:34,877 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-04 18:44:35,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-04 18:44:35,398 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-04 18:44:35,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:44:35 BoogieIcfgContainer [2021-10-04 18:44:35,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-04 18:44:35,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-04 18:44:35,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-04 18:44:35,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-04 18:44:35,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.10 06:44:34" (1/3) ... [2021-10-04 18:44:35,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5098660d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:44:35, skipping insertion in model container [2021-10-04 18:44:35,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:44:34" (2/3) ... [2021-10-04 18:44:35,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5098660d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:44:35, skipping insertion in model container [2021-10-04 18:44:35,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:44:35" (3/3) ... [2021-10-04 18:44:35,416 INFO L111 eAbstractionObserver]: Analyzing ICFG min-max-1.wvr.c [2021-10-04 18:44:35,423 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-04 18:44:35,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-04 18:44:35,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-04 18:44:35,424 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-04 18:44:35,504 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,504 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,505 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,505 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,505 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,506 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,509 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,534 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,535 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,535 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,538 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,539 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,544 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,546 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,548 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,548 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,548 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,548 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,549 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:44:35,560 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-04 18:44:35,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-04 18:44:35,623 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-04 18:44:35,623 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-04 18:44:35,642 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-04 18:44:35,656 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 170 transitions, 364 flow [2021-10-04 18:44:35,660 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 170 transitions, 364 flow [2021-10-04 18:44:35,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 167 places, 170 transitions, 364 flow [2021-10-04 18:44:35,757 INFO L129 PetriNetUnfolder]: 13/167 cut-off events. [2021-10-04 18:44:35,757 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-04 18:44:35,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 13/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2021-10-04 18:44:35,768 INFO L116 LiptonReduction]: Number of co-enabled transitions 2174 [2021-10-04 18:44:42,151 INFO L131 LiptonReduction]: Checked pairs total: 5064 [2021-10-04 18:44:42,152 INFO L133 LiptonReduction]: Total number of compositions: 164 [2021-10-04 18:44:42,164 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 37 transitions, 98 flow [2021-10-04 18:44:42,212 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 389 states, 388 states have (on average 3.1391752577319587) internal successors, (1218), 388 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 388 states have (on average 3.1391752577319587) internal successors, (1218), 388 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:42,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:42,239 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:42,239 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:42,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2063537881, now seen corresponding path program 1 times [2021-10-04 18:44:42,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:42,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423528119] [2021-10-04 18:44:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:42,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:42,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:42,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423528119] [2021-10-04 18:44:42,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423528119] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:42,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:42,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-04 18:44:42,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746556422] [2021-10-04 18:44:42,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-04 18:44:42,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:42,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-04 18:44:42,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-04 18:44:42,891 INFO L87 Difference]: Start difference. First operand has 389 states, 388 states have (on average 3.1391752577319587) internal successors, (1218), 388 states have internal predecessors, (1218), 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 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:43,896 INFO L93 Difference]: Finished difference Result 1135 states and 3429 transitions. [2021-10-04 18:44:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-04 18:44:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:43,924 INFO L225 Difference]: With dead ends: 1135 [2021-10-04 18:44:43,925 INFO L226 Difference]: Without dead ends: 849 [2021-10-04 18:44:43,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 391.2ms TimeCoverageRelationStatistics Valid=254, Invalid=676, Unknown=0, NotChecked=0, Total=930 [2021-10-04 18:44:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-10-04 18:44:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 471. [2021-10-04 18:44:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 3.1212765957446806) internal successors, (1467), 470 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1467 transitions. [2021-10-04 18:44:44,063 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1467 transitions. Word has length 23 [2021-10-04 18:44:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:44,065 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 1467 transitions. [2021-10-04 18:44:44,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1467 transitions. [2021-10-04 18:44:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:44,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:44,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:44,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-04 18:44:44,075 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:44,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:44,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1961244269, now seen corresponding path program 2 times [2021-10-04 18:44:44,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:44,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924679110] [2021-10-04 18:44:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:44,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:44,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:44,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924679110] [2021-10-04 18:44:44,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924679110] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:44,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:44,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-04 18:44:44,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260904647] [2021-10-04 18:44:44,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 18:44:44,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 18:44:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:44:44,377 INFO L87 Difference]: Start difference. First operand 471 states and 1467 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:45,021 INFO L93 Difference]: Finished difference Result 1468 states and 4509 transitions. [2021-10-04 18:44:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-04 18:44:45,022 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:45,034 INFO L225 Difference]: With dead ends: 1468 [2021-10-04 18:44:45,035 INFO L226 Difference]: Without dead ends: 1181 [2021-10-04 18:44:45,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 223.6ms TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2021-10-04 18:44:45,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-10-04 18:44:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 569. [2021-10-04 18:44:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 3.1232394366197185) internal successors, (1774), 568 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1774 transitions. [2021-10-04 18:44:45,075 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1774 transitions. Word has length 23 [2021-10-04 18:44:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:45,076 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1774 transitions. [2021-10-04 18:44:45,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1774 transitions. [2021-10-04 18:44:45,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:45,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:45,079 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:45,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-04 18:44:45,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:45,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:45,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1163267925, now seen corresponding path program 3 times [2021-10-04 18:44:45,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:45,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490835376] [2021-10-04 18:44:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:45,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:45,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:45,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490835376] [2021-10-04 18:44:45,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490835376] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:45,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:45,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-04 18:44:45,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032044640] [2021-10-04 18:44:45,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-04 18:44:45,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-04 18:44:45,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:44:45,239 INFO L87 Difference]: Start difference. First operand 569 states and 1774 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:45,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:45,439 INFO L93 Difference]: Finished difference Result 787 states and 2406 transitions. [2021-10-04 18:44:45,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-04 18:44:45,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:45,446 INFO L225 Difference]: With dead ends: 787 [2021-10-04 18:44:45,446 INFO L226 Difference]: Without dead ends: 662 [2021-10-04 18:44:45,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-04 18:44:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-04 18:44:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2021-10-04 18:44:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 3.075642965204236) internal successors, (2033), 661 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2033 transitions. [2021-10-04 18:44:45,490 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2033 transitions. Word has length 23 [2021-10-04 18:44:45,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:45,490 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 2033 transitions. [2021-10-04 18:44:45,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2033 transitions. [2021-10-04 18:44:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:45,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:45,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:45,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-04 18:44:45,496 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:45,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:45,496 INFO L82 PathProgramCache]: Analyzing trace with hash -478551193, now seen corresponding path program 4 times [2021-10-04 18:44:45,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:45,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985842682] [2021-10-04 18:44:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:45,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:45,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:45,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985842682] [2021-10-04 18:44:45,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985842682] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:45,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:45,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:44:45,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785414684] [2021-10-04 18:44:45,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:44:45,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:44:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:44:45,663 INFO L87 Difference]: Start difference. First operand 662 states and 2033 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:45,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:45,718 INFO L93 Difference]: Finished difference Result 737 states and 2238 transitions. [2021-10-04 18:44:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:44:45,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:45,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:45,725 INFO L225 Difference]: With dead ends: 737 [2021-10-04 18:44:45,726 INFO L226 Difference]: Without dead ends: 616 [2021-10-04 18:44:45,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-04 18:44:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-04 18:44:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 523. [2021-10-04 18:44:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 3.0306513409961684) internal successors, (1582), 522 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 1582 transitions. [2021-10-04 18:44:45,748 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 1582 transitions. Word has length 23 [2021-10-04 18:44:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:45,749 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 1582 transitions. [2021-10-04 18:44:45,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 1582 transitions. [2021-10-04 18:44:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:45,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:45,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:45,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-04 18:44:45,753 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash -376257581, now seen corresponding path program 5 times [2021-10-04 18:44:45,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:45,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916551154] [2021-10-04 18:44:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:45,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:45,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:45,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916551154] [2021-10-04 18:44:45,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916551154] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:45,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:45,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-04 18:44:45,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766779034] [2021-10-04 18:44:45,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 18:44:45,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:45,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 18:44:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:44:45,986 INFO L87 Difference]: Start difference. First operand 523 states and 1582 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:46,512 INFO L93 Difference]: Finished difference Result 1017 states and 3092 transitions. [2021-10-04 18:44:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-04 18:44:46,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:46,520 INFO L225 Difference]: With dead ends: 1017 [2021-10-04 18:44:46,521 INFO L226 Difference]: Without dead ends: 841 [2021-10-04 18:44:46,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 258.9ms TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2021-10-04 18:44:46,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-10-04 18:44:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 517. [2021-10-04 18:44:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 3.0348837209302326) internal successors, (1566), 516 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 1566 transitions. [2021-10-04 18:44:46,545 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 1566 transitions. Word has length 23 [2021-10-04 18:44:46,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:46,546 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 1566 transitions. [2021-10-04 18:44:46,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 1566 transitions. [2021-10-04 18:44:46,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:46,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:46,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:46,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-04 18:44:46,550 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:46,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1549676819, now seen corresponding path program 6 times [2021-10-04 18:44:46,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:46,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022425906] [2021-10-04 18:44:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:46,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:46,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:46,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022425906] [2021-10-04 18:44:46,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022425906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:46,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:46,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-04 18:44:46,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361324480] [2021-10-04 18:44:46,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 18:44:46,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 18:44:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:44:46,685 INFO L87 Difference]: Start difference. First operand 517 states and 1566 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:47,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:47,151 INFO L93 Difference]: Finished difference Result 913 states and 2777 transitions. [2021-10-04 18:44:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-04 18:44:47,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:47,159 INFO L225 Difference]: With dead ends: 913 [2021-10-04 18:44:47,159 INFO L226 Difference]: Without dead ends: 771 [2021-10-04 18:44:47,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 192.3ms TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-10-04 18:44:47,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-10-04 18:44:47,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 524. [2021-10-04 18:44:47,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.0305927342256216) internal successors, (1585), 523 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1585 transitions. [2021-10-04 18:44:47,184 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1585 transitions. Word has length 23 [2021-10-04 18:44:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:47,187 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1585 transitions. [2021-10-04 18:44:47,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1585 transitions. [2021-10-04 18:44:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:47,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:47,192 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:47,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-04 18:44:47,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:47,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1122514689, now seen corresponding path program 7 times [2021-10-04 18:44:47,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:47,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045563089] [2021-10-04 18:44:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:47,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:47,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:47,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045563089] [2021-10-04 18:44:47,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045563089] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:47,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:47,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-04 18:44:47,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265981389] [2021-10-04 18:44:47,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 18:44:47,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:47,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 18:44:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:44:47,391 INFO L87 Difference]: Start difference. First operand 524 states and 1585 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:47,861 INFO L93 Difference]: Finished difference Result 1018 states and 3084 transitions. [2021-10-04 18:44:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-04 18:44:47,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:47,881 INFO L225 Difference]: With dead ends: 1018 [2021-10-04 18:44:47,881 INFO L226 Difference]: Without dead ends: 876 [2021-10-04 18:44:47,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 211.5ms TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-10-04 18:44:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-10-04 18:44:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 544. [2021-10-04 18:44:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 3.042357274401473) internal successors, (1652), 543 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1652 transitions. [2021-10-04 18:44:47,905 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1652 transitions. Word has length 23 [2021-10-04 18:44:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:47,906 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 1652 transitions. [2021-10-04 18:44:47,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:47,906 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1652 transitions. [2021-10-04 18:44:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:47,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:47,910 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:47,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-04 18:44:47,910 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:47,911 INFO L82 PathProgramCache]: Analyzing trace with hash -96568217, now seen corresponding path program 8 times [2021-10-04 18:44:47,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:47,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625120414] [2021-10-04 18:44:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:47,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:48,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:48,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625120414] [2021-10-04 18:44:48,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625120414] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:48,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:48,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-04 18:44:48,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671822884] [2021-10-04 18:44:48,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-04 18:44:48,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-04 18:44:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:44:48,069 INFO L87 Difference]: Start difference. First operand 544 states and 1652 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:48,289 INFO L93 Difference]: Finished difference Result 697 states and 2104 transitions. [2021-10-04 18:44:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-04 18:44:48,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:48,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:48,299 INFO L225 Difference]: With dead ends: 697 [2021-10-04 18:44:48,299 INFO L226 Difference]: Without dead ends: 606 [2021-10-04 18:44:48,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 104.2ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-04 18:44:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-10-04 18:44:48,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2021-10-04 18:44:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 3.0264462809917356) internal successors, (1831), 605 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1831 transitions. [2021-10-04 18:44:48,321 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1831 transitions. Word has length 23 [2021-10-04 18:44:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:48,322 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1831 transitions. [2021-10-04 18:44:48,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1831 transitions. [2021-10-04 18:44:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:48,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:48,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:48,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-04 18:44:48,327 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:48,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1205560577, now seen corresponding path program 9 times [2021-10-04 18:44:48,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:48,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158392799] [2021-10-04 18:44:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:48,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:48,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:48,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158392799] [2021-10-04 18:44:48,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158392799] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:48,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:48,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-04 18:44:48,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178045838] [2021-10-04 18:44:48,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 18:44:48,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:48,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 18:44:48,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:44:48,522 INFO L87 Difference]: Start difference. First operand 606 states and 1831 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:48,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:48,926 INFO L93 Difference]: Finished difference Result 999 states and 3026 transitions. [2021-10-04 18:44:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-04 18:44:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:48,933 INFO L225 Difference]: With dead ends: 999 [2021-10-04 18:44:48,934 INFO L226 Difference]: Without dead ends: 874 [2021-10-04 18:44:48,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 198.6ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-04 18:44:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-04 18:44:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 609. [2021-10-04 18:44:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 3.0246710526315788) internal successors, (1839), 608 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1839 transitions. [2021-10-04 18:44:48,957 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1839 transitions. Word has length 23 [2021-10-04 18:44:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:48,962 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 1839 transitions. [2021-10-04 18:44:48,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1839 transitions. [2021-10-04 18:44:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:48,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:48,966 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:48,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-04 18:44:48,966 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:48,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1135740909, now seen corresponding path program 10 times [2021-10-04 18:44:48,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:48,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151333492] [2021-10-04 18:44:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:48,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:49,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:49,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151333492] [2021-10-04 18:44:49,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151333492] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:49,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:49,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-04 18:44:49,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534798159] [2021-10-04 18:44:49,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 18:44:49,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:49,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 18:44:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:44:49,139 INFO L87 Difference]: Start difference. First operand 609 states and 1839 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:49,591 INFO L93 Difference]: Finished difference Result 1036 states and 3132 transitions. [2021-10-04 18:44:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-04 18:44:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:49,599 INFO L225 Difference]: With dead ends: 1036 [2021-10-04 18:44:49,600 INFO L226 Difference]: Without dead ends: 911 [2021-10-04 18:44:49,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 223.7ms TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-10-04 18:44:49,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-10-04 18:44:49,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 603. [2021-10-04 18:44:49,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 3.028239202657807) internal successors, (1823), 602 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1823 transitions. [2021-10-04 18:44:49,623 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1823 transitions. Word has length 23 [2021-10-04 18:44:49,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:49,625 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 1823 transitions. [2021-10-04 18:44:49,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1823 transitions. [2021-10-04 18:44:49,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:49,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:49,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:49,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-04 18:44:49,628 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:49,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:49,628 INFO L82 PathProgramCache]: Analyzing trace with hash -628598233, now seen corresponding path program 11 times [2021-10-04 18:44:49,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:49,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794182810] [2021-10-04 18:44:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:49,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:49,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:49,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794182810] [2021-10-04 18:44:49,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794182810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:49,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:49,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-04 18:44:49,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889880472] [2021-10-04 18:44:49,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-04 18:44:49,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:49,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-04 18:44:49,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:44:49,785 INFO L87 Difference]: Start difference. First operand 603 states and 1823 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:50,075 INFO L93 Difference]: Finished difference Result 718 states and 2158 transitions. [2021-10-04 18:44:50,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-04 18:44:50,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:50,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:50,081 INFO L225 Difference]: With dead ends: 718 [2021-10-04 18:44:50,081 INFO L226 Difference]: Without dead ends: 627 [2021-10-04 18:44:50,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 124.5ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-04 18:44:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-10-04 18:44:50,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 573. [2021-10-04 18:44:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 3.027972027972028) internal successors, (1732), 572 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1732 transitions. [2021-10-04 18:44:50,101 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1732 transitions. Word has length 23 [2021-10-04 18:44:50,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:50,102 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 1732 transitions. [2021-10-04 18:44:50,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1732 transitions. [2021-10-04 18:44:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:50,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:50,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:50,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-04 18:44:50,105 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:50,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:50,106 INFO L82 PathProgramCache]: Analyzing trace with hash -163681129, now seen corresponding path program 12 times [2021-10-04 18:44:50,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:50,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806038658] [2021-10-04 18:44:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:50,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:50,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:50,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806038658] [2021-10-04 18:44:50,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806038658] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:50,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:50,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-04 18:44:50,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625411758] [2021-10-04 18:44:50,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-04 18:44:50,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-04 18:44:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:44:50,213 INFO L87 Difference]: Start difference. First operand 573 states and 1732 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:50,440 INFO L93 Difference]: Finished difference Result 917 states and 2770 transitions. [2021-10-04 18:44:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-04 18:44:50,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:50,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:50,448 INFO L225 Difference]: With dead ends: 917 [2021-10-04 18:44:50,449 INFO L226 Difference]: Without dead ends: 791 [2021-10-04 18:44:50,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 67.0ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-04 18:44:50,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-10-04 18:44:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 578. [2021-10-04 18:44:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 3.024263431542461) internal successors, (1745), 577 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1745 transitions. [2021-10-04 18:44:50,472 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1745 transitions. Word has length 23 [2021-10-04 18:44:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:50,472 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 1745 transitions. [2021-10-04 18:44:50,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1745 transitions. [2021-10-04 18:44:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:50,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:50,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:50,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-04 18:44:50,475 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1786456917, now seen corresponding path program 13 times [2021-10-04 18:44:50,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:50,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536002741] [2021-10-04 18:44:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:50,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:50,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:50,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536002741] [2021-10-04 18:44:50,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536002741] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:50,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:50,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-04 18:44:50,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491376153] [2021-10-04 18:44:50,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-04 18:44:50,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:50,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-04 18:44:50,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:44:50,570 INFO L87 Difference]: Start difference. First operand 578 states and 1745 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:50,848 INFO L93 Difference]: Finished difference Result 918 states and 2778 transitions. [2021-10-04 18:44:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-04 18:44:50,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:50,855 INFO L225 Difference]: With dead ends: 918 [2021-10-04 18:44:50,855 INFO L226 Difference]: Without dead ends: 792 [2021-10-04 18:44:50,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 73.9ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-04 18:44:50,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-10-04 18:44:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 574. [2021-10-04 18:44:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 3.026178010471204) internal successors, (1734), 573 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1734 transitions. [2021-10-04 18:44:50,877 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1734 transitions. Word has length 23 [2021-10-04 18:44:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:50,878 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 1734 transitions. [2021-10-04 18:44:50,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1734 transitions. [2021-10-04 18:44:50,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:50,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:50,881 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:50,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-04 18:44:50,881 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:50,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:50,882 INFO L82 PathProgramCache]: Analyzing trace with hash -328932333, now seen corresponding path program 14 times [2021-10-04 18:44:50,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:50,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903546689] [2021-10-04 18:44:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:50,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:50,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:50,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903546689] [2021-10-04 18:44:50,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903546689] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:50,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:50,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-04 18:44:50,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866025558] [2021-10-04 18:44:50,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-04 18:44:50,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-04 18:44:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:44:50,991 INFO L87 Difference]: Start difference. First operand 574 states and 1734 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:51,404 INFO L93 Difference]: Finished difference Result 1389 states and 4242 transitions. [2021-10-04 18:44:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-04 18:44:51,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:51,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:51,413 INFO L225 Difference]: With dead ends: 1389 [2021-10-04 18:44:51,414 INFO L226 Difference]: Without dead ends: 1146 [2021-10-04 18:44:51,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-04 18:44:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-10-04 18:44:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 583. [2021-10-04 18:44:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 3.020618556701031) internal successors, (1758), 582 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1758 transitions. [2021-10-04 18:44:51,439 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1758 transitions. Word has length 23 [2021-10-04 18:44:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:51,439 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 1758 transitions. [2021-10-04 18:44:51,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1758 transitions. [2021-10-04 18:44:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:51,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:51,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:51,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-04 18:44:51,443 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1649350637, now seen corresponding path program 15 times [2021-10-04 18:44:51,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:51,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029305579] [2021-10-04 18:44:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:51,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:51,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:51,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029305579] [2021-10-04 18:44:51,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029305579] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:51,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:51,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-04 18:44:51,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686241356] [2021-10-04 18:44:51,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 18:44:51,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:51,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 18:44:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:44:51,565 INFO L87 Difference]: Start difference. First operand 583 states and 1758 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:51,972 INFO L93 Difference]: Finished difference Result 1175 states and 3588 transitions. [2021-10-04 18:44:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-04 18:44:51,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:51,980 INFO L225 Difference]: With dead ends: 1175 [2021-10-04 18:44:51,980 INFO L226 Difference]: Without dead ends: 999 [2021-10-04 18:44:51,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 163.2ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-10-04 18:44:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-10-04 18:44:52,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 568. [2021-10-04 18:44:52,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.0246913580246915) internal successors, (1715), 567 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1715 transitions. [2021-10-04 18:44:52,022 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1715 transitions. Word has length 23 [2021-10-04 18:44:52,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:52,023 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1715 transitions. [2021-10-04 18:44:52,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1715 transitions. [2021-10-04 18:44:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:52,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:52,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:52,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-04 18:44:52,026 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:52,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1390560169, now seen corresponding path program 16 times [2021-10-04 18:44:52,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:52,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751406785] [2021-10-04 18:44:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:52,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:52,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:52,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751406785] [2021-10-04 18:44:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751406785] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:52,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:52,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-04 18:44:52,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221329232] [2021-10-04 18:44:52,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 18:44:52,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:52,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 18:44:52,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:44:52,144 INFO L87 Difference]: Start difference. First operand 568 states and 1715 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:52,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:52,485 INFO L93 Difference]: Finished difference Result 959 states and 2905 transitions. [2021-10-04 18:44:52,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-04 18:44:52,486 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:52,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:52,493 INFO L225 Difference]: With dead ends: 959 [2021-10-04 18:44:52,493 INFO L226 Difference]: Without dead ends: 834 [2021-10-04 18:44:52,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 142.2ms TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-04 18:44:52,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-10-04 18:44:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 565. [2021-10-04 18:44:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 3.026595744680851) internal successors, (1707), 564 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1707 transitions. [2021-10-04 18:44:52,515 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1707 transitions. Word has length 23 [2021-10-04 18:44:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:52,516 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 1707 transitions. [2021-10-04 18:44:52,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1707 transitions. [2021-10-04 18:44:52,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-04 18:44:52,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:52,519 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:52,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-04 18:44:52,520 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:52,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:52,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1460379837, now seen corresponding path program 17 times [2021-10-04 18:44:52,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:52,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451786277] [2021-10-04 18:44:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:52,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:52,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:52,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451786277] [2021-10-04 18:44:52,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451786277] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:52,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:52,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-04 18:44:52,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612909358] [2021-10-04 18:44:52,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 18:44:52,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:52,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 18:44:52,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:44:52,641 INFO L87 Difference]: Start difference. First operand 565 states and 1707 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:53,022 INFO L93 Difference]: Finished difference Result 954 states and 2897 transitions. [2021-10-04 18:44:53,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-04 18:44:53,023 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-10-04 18:44:53,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:53,043 INFO L225 Difference]: With dead ends: 954 [2021-10-04 18:44:53,044 INFO L226 Difference]: Without dead ends: 829 [2021-10-04 18:44:53,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 156.4ms TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-10-04 18:44:53,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-10-04 18:44:53,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 541. [2021-10-04 18:44:53,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 3.037037037037037) internal successors, (1640), 540 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1640 transitions. [2021-10-04 18:44:53,064 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1640 transitions. Word has length 23 [2021-10-04 18:44:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:53,065 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 1640 transitions. [2021-10-04 18:44:53,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1640 transitions. [2021-10-04 18:44:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-04 18:44:53,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:53,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:53,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-04 18:44:53,068 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:53,069 INFO L82 PathProgramCache]: Analyzing trace with hash 2041384497, now seen corresponding path program 1 times [2021-10-04 18:44:53,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:53,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596765636] [2021-10-04 18:44:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:53,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:53,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:53,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596765636] [2021-10-04 18:44:53,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596765636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:53,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:53,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-04 18:44:53,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469821453] [2021-10-04 18:44:53,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-04 18:44:53,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:53,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-04 18:44:53,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-04 18:44:53,099 INFO L87 Difference]: Start difference. First operand 541 states and 1640 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:53,106 INFO L93 Difference]: Finished difference Result 303 states and 832 transitions. [2021-10-04 18:44:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-04 18:44:53,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-10-04 18:44:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:53,109 INFO L225 Difference]: With dead ends: 303 [2021-10-04 18:44:53,109 INFO L226 Difference]: Without dead ends: 287 [2021-10-04 18:44:53,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-04 18:44:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-04 18:44:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-04 18:44:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.769230769230769) internal successors, (792), 286 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 792 transitions. [2021-10-04 18:44:53,118 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 792 transitions. Word has length 25 [2021-10-04 18:44:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:53,118 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 792 transitions. [2021-10-04 18:44:53,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:53,119 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 792 transitions. [2021-10-04 18:44:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-04 18:44:53,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:44:53,120 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:44:53,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-04 18:44:53,120 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:44:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:44:53,121 INFO L82 PathProgramCache]: Analyzing trace with hash -656085329, now seen corresponding path program 1 times [2021-10-04 18:44:53,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:44:53,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593394074] [2021-10-04 18:44:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:44:53,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:44:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:44:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:44:53,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:44:53,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593394074] [2021-10-04 18:44:53,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593394074] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:44:53,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:44:53,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-04 18:44:53,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513159446] [2021-10-04 18:44:53,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-04 18:44:53,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:44:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-04 18:44:53,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-04 18:44:53,150 INFO L87 Difference]: Start difference. First operand 287 states and 792 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:44:53,155 INFO L93 Difference]: Finished difference Result 101 states and 220 transitions. [2021-10-04 18:44:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-04 18:44:53,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-10-04 18:44:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:44:53,156 INFO L225 Difference]: With dead ends: 101 [2021-10-04 18:44:53,156 INFO L226 Difference]: Without dead ends: 0 [2021-10-04 18:44:53,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-04 18:44:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-04 18:44:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-04 18:44:53,157 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) [2021-10-04 18:44:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-04 18:44:53,157 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-10-04 18:44:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:44:53,157 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-04 18:44:53,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:44:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-04 18:44:53,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-04 18:44:53,161 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-04 18:44:53,162 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-04 18:44:53,162 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-04 18:44:53,162 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-04 18:44:53,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-04 18:44:53,168 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-04 18:44:53,168 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-04 18:44:53,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 06:44:53 BasicIcfg [2021-10-04 18:44:53,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-04 18:44:53,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-04 18:44:53,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-04 18:44:53,171 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-04 18:44:53,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:44:35" (3/4) ... [2021-10-04 18:44:53,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-04 18:44:53,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-04 18:44:53,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-04 18:44:53,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-04 18:44:53,189 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-04 18:44:53,189 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-04 18:44:53,190 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 18:44:53,235 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-04 18:44:53,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-04 18:44:53,237 INFO L168 Benchmark]: Toolchain (without parser) took 18874.69 ms. Allocated memory was 54.5 MB in the beginning and 144.7 MB in the end (delta: 90.2 MB). Free memory was 30.3 MB in the beginning and 87.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-10-04 18:44:53,238 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 39.8 MB. Free memory is still 17.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 18:44:53,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.32 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 32.2 MB in the end (delta: -2.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-04 18:44:53,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.68 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 30.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:44:53,239 INFO L168 Benchmark]: Boogie Preprocessor took 38.05 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 28.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 18:44:53,239 INFO L168 Benchmark]: RCFGBuilder took 640.18 ms. Allocated memory is still 54.5 MB. Free memory was 28.8 MB in the beginning and 27.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:44:53,240 INFO L168 Benchmark]: TraceAbstraction took 17763.89 ms. Allocated memory was 54.5 MB in the beginning and 144.7 MB in the end (delta: 90.2 MB). Free memory was 26.7 MB in the beginning and 91.2 MB in the end (delta: -64.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2021-10-04 18:44:53,240 INFO L168 Benchmark]: Witness Printer took 64.58 ms. Allocated memory is still 144.7 MB. Free memory was 91.2 MB in the beginning and 87.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-04 18:44:53,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 39.8 MB. Free memory is still 17.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.32 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 32.2 MB in the end (delta: -2.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.68 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 30.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.05 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 28.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 640.18 ms. Allocated memory is still 54.5 MB. Free memory was 28.8 MB in the beginning and 27.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17763.89 ms. Allocated memory was 54.5 MB in the beginning and 144.7 MB in the end (delta: 90.2 MB). Free memory was 26.7 MB in the beginning and 91.2 MB in the end (delta: -64.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. * Witness Printer took 64.58 ms. Allocated memory is still 144.7 MB. Free memory was 91.2 MB in the beginning and 87.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6492.6ms, 167 PlacesBefore, 42 PlacesAfterwards, 170 TransitionsBefore, 37 TransitionsAfterwards, 2174 CoEnabledTransitionPairs, 7 FixpointIterations, 95 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 13 ConcurrentYvCompositions, 8 ChoiceCompositions, 164 TotalNumberOfCompositions, 5064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3589, positive: 3423, positive conditional: 0, positive unconditional: 3423, negative: 166, negative conditional: 0, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1779, positive: 1720, positive conditional: 0, positive unconditional: 1720, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1779, positive: 1716, positive conditional: 0, positive unconditional: 1716, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 165, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 149, negative conditional: 0, negative unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3589, positive: 1703, positive conditional: 0, positive unconditional: 1703, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 1779, unknown conditional: 0, unknown unconditional: 1779] , Statistics on independence cache: Total cache size (in pairs): 241, Positive cache size: 220, Positive conditional cache size: 0, Positive unconditional cache size: 220, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - 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: 76]: 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, 201 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 17554.4ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 78.6ms, AutomataDifference: 7052.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6588.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1041 SDtfs, 3035 SDslu, 3328 SDs, 0 SdLazy, 5222 SolverSat, 417 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3471.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 2754.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=662occurred in iteration=3, InterpolantAutomatonStates: 246, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 538.1ms AutomataMinimizationTime, 19 MinimizatonAttempts, 4595 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.6ms SsaConstructionTime, 695.2ms SatisfiabilityAnalysisTime, 2157.8ms InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 423 ConstructedInterpolants, 0 QuantifiedInterpolants, 2944 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 2/2 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! [2021-10-04 18:44:53,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...