./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash acb4e4cf9618679cb89bb556ee2ad72be1e1c078 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 22:22:25,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:22:25,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:22:25,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:22:25,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:22:25,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:22:25,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:22:25,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:22:25,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:22:25,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:22:25,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:22:25,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:22:25,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:22:25,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:22:25,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:22:25,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:22:25,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:22:25,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:22:25,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:22:25,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:22:25,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:22:25,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:22:25,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:22:25,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:22:25,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:22:25,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:22:25,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:22:25,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:22:25,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:22:25,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:22:25,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:22:25,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:22:25,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:22:25,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:22:25,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:22:25,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:22:25,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:22:25,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:22:25,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:22:25,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:22:25,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:22:25,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:22:25,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:22:25,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:22:25,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:22:25,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:22:25,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:22:25,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:22:25,775 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:22:25,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:22:25,776 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:22:25,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:22:25,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:22:25,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:22:25,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:22:25,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:22:25,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:22:25,778 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:22:25,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:22:25,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:22:25,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:22:25,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:22:25,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:22:25,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:22:25,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:22:25,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:22:25,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:22:25,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:22:25,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:22:25,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:22:25,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:22:25,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:22:25,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acb4e4cf9618679cb89bb556ee2ad72be1e1c078 [2021-08-29 22:22:26,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:22:26,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:22:26,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:22:26,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:22:26,116 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:22:26,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2021-08-29 22:22:26,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5562ced2/30b6bd380b774914b2229a97a38d3b8a/FLAG68dc6b795 [2021-08-29 22:22:26,727 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:22:26,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2021-08-29 22:22:26,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5562ced2/30b6bd380b774914b2229a97a38d3b8a/FLAG68dc6b795 [2021-08-29 22:22:27,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5562ced2/30b6bd380b774914b2229a97a38d3b8a [2021-08-29 22:22:27,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:22:27,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:22:27,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:22:27,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:22:27,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:22:27,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6c0fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27, skipping insertion in model container [2021-08-29 22:22:27,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:22:27,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:22:27,376 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i[949,962] [2021-08-29 22:22:27,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:22:27,516 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:22:27,526 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i[949,962] [2021-08-29 22:22:27,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:22:27,577 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:22:27,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27 WrapperNode [2021-08-29 22:22:27,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:22:27,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:22:27,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:22:27,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:22:27,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:22:27,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:22:27,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:22:27,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:22:27,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:22:27,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:22:27,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:22:27,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:22:27,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (1/1) ... [2021-08-29 22:22:27,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:22:27,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:22:27,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 22:22:27,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 22:22:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:22:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:22:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:22:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:22:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:22:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:22:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:22:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:22:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-29 22:22:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-29 22:22:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:22:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:22:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:22:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:22:27,734 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-29 22:22:27,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:22:27,999 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:22:28,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:22:28 BoogieIcfgContainer [2021-08-29 22:22:28,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:22:28,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:22:28,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:22:28,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:22:28,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:22:27" (1/3) ... [2021-08-29 22:22:28,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6377682e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:22:28, skipping insertion in model container [2021-08-29 22:22:28,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:27" (2/3) ... [2021-08-29 22:22:28,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6377682e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:22:28, skipping insertion in model container [2021-08-29 22:22:28,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:22:28" (3/3) ... [2021-08-29 22:22:28,009 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2021-08-29 22:22:28,016 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:22:28,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:22:28,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:22:28,017 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:22:28,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,060 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,060 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,061 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,061 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,061 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,061 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,063 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,063 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,065 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,065 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,066 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,066 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,066 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,067 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,071 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,071 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,072 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,072 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,072 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,073 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,073 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,073 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,073 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,074 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,077 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,077 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,083 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,084 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:28,086 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:22:28,133 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:22:28,140 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 22:22:28,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-29 22:22:28,165 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:22:28,175 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-08-29 22:22:28,178 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-08-29 22:22:28,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-08-29 22:22:28,242 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-08-29 22:22:28,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:22:28,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-29 22:22:28,251 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-08-29 22:22:30,625 INFO L131 LiptonReduction]: Checked pairs total: 2757 [2021-08-29 22:22:30,626 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-08-29 22:22:30,633 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-08-29 22:22:30,660 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:30,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 22:22:30,667 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:30,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:30,668 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:30,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:30,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1301167225, now seen corresponding path program 1 times [2021-08-29 22:22:30,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:30,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768138822] [2021-08-29 22:22:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:30,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:30,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:30,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768138822] [2021-08-29 22:22:30,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768138822] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:30,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:30,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:22:30,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706541929] [2021-08-29 22:22:30,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:22:30,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:30,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:22:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:30,933 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:30,978 INFO L93 Difference]: Finished difference Result 347 states and 908 transitions. [2021-08-29 22:22:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:22:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 22:22:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:30,991 INFO L225 Difference]: With dead ends: 347 [2021-08-29 22:22:30,991 INFO L226 Difference]: Without dead ends: 315 [2021-08-29 22:22:30,992 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:30,995 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.65ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.26ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:30,996 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 19 Unknown, 0 Unchecked, 0.65ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 19.26ms Time] [2021-08-29 22:22:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-08-29 22:22:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2021-08-29 22:22:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.6487455197132617) internal successors, (739), 279 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 739 transitions. [2021-08-29 22:22:31,052 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 739 transitions. Word has length 8 [2021-08-29 22:22:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:31,054 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 739 transitions. [2021-08-29 22:22:31,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 739 transitions. [2021-08-29 22:22:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 22:22:31,058 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:31,058 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:31,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:22:31,059 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:31,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:31,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2057201507, now seen corresponding path program 1 times [2021-08-29 22:22:31,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:31,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75896834] [2021-08-29 22:22:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:31,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:31,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:31,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75896834] [2021-08-29 22:22:31,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75896834] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:31,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:31,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:31,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690193759] [2021-08-29 22:22:31,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:31,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:31,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:31,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:31,187 INFO L87 Difference]: Start difference. First operand 280 states and 739 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:31,226 INFO L93 Difference]: Finished difference Result 293 states and 749 transitions. [2021-08-29 22:22:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:31,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 22:22:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:31,229 INFO L225 Difference]: With dead ends: 293 [2021-08-29 22:22:31,232 INFO L226 Difference]: Without dead ends: 293 [2021-08-29 22:22:31,232 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.52ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:31,234 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.59ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:31,234 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 21 Invalid, 22 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 27.59ms Time] [2021-08-29 22:22:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-08-29 22:22:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2021-08-29 22:22:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.62109375) internal successors, (671), 256 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 671 transitions. [2021-08-29 22:22:31,257 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 671 transitions. Word has length 9 [2021-08-29 22:22:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:31,257 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 671 transitions. [2021-08-29 22:22:31,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 671 transitions. [2021-08-29 22:22:31,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:22:31,260 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:31,260 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:31,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:22:31,261 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:31,262 INFO L82 PathProgramCache]: Analyzing trace with hash -826648700, now seen corresponding path program 1 times [2021-08-29 22:22:31,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:31,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866484181] [2021-08-29 22:22:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:31,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:31,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:31,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866484181] [2021-08-29 22:22:31,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866484181] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:31,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:31,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:31,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984261960] [2021-08-29 22:22:31,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:31,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:31,355 INFO L87 Difference]: Start difference. First operand 257 states and 671 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:31,380 INFO L93 Difference]: Finished difference Result 278 states and 706 transitions. [2021-08-29 22:22:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:31,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 22:22:31,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:31,383 INFO L225 Difference]: With dead ends: 278 [2021-08-29 22:22:31,383 INFO L226 Difference]: Without dead ends: 278 [2021-08-29 22:22:31,383 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.36ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:31,384 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.46ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.87ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:31,385 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 26 Invalid, 25 Unknown, 0 Unchecked, 0.46ms Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 19.87ms Time] [2021-08-29 22:22:31,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-08-29 22:22:31,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 226. [2021-08-29 22:22:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.608888888888889) internal successors, (587), 225 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 587 transitions. [2021-08-29 22:22:31,397 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 587 transitions. Word has length 10 [2021-08-29 22:22:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:31,397 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 587 transitions. [2021-08-29 22:22:31,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 587 transitions. [2021-08-29 22:22:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:22:31,399 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:31,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:31,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:22:31,399 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:31,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:31,400 INFO L82 PathProgramCache]: Analyzing trace with hash -763710268, now seen corresponding path program 1 times [2021-08-29 22:22:31,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:31,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848242074] [2021-08-29 22:22:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:31,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:31,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:31,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848242074] [2021-08-29 22:22:31,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848242074] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:31,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:31,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:31,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692611719] [2021-08-29 22:22:31,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:31,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:31,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:31,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:31,449 INFO L87 Difference]: Start difference. First operand 226 states and 587 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:31,480 INFO L93 Difference]: Finished difference Result 258 states and 648 transitions. [2021-08-29 22:22:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:31,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 22:22:31,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:31,483 INFO L225 Difference]: With dead ends: 258 [2021-08-29 22:22:31,483 INFO L226 Difference]: Without dead ends: 258 [2021-08-29 22:22:31,483 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.11ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:31,484 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.93ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:31,485 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 25.93ms Time] [2021-08-29 22:22:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-08-29 22:22:31,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 202. [2021-08-29 22:22:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.557213930348259) internal successors, (514), 201 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 514 transitions. [2021-08-29 22:22:31,496 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 514 transitions. Word has length 10 [2021-08-29 22:22:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:31,496 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 514 transitions. [2021-08-29 22:22:31,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 514 transitions. [2021-08-29 22:22:31,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:22:31,497 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:31,498 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:31,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:22:31,498 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:31,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:31,499 INFO L82 PathProgramCache]: Analyzing trace with hash 143692478, now seen corresponding path program 1 times [2021-08-29 22:22:31,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:31,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002526563] [2021-08-29 22:22:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:31,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:31,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:31,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002526563] [2021-08-29 22:22:31,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002526563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:31,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:31,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:31,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36752641] [2021-08-29 22:22:31,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:31,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:31,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:31,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:31,565 INFO L87 Difference]: Start difference. First operand 202 states and 514 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:31,592 INFO L93 Difference]: Finished difference Result 254 states and 639 transitions. [2021-08-29 22:22:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 22:22:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:31,595 INFO L225 Difference]: With dead ends: 254 [2021-08-29 22:22:31,595 INFO L226 Difference]: Without dead ends: 254 [2021-08-29 22:22:31,596 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.92ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:31,598 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.07ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:31,598 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 30 Invalid, 30 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 19.07ms Time] [2021-08-29 22:22:31,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-08-29 22:22:31,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 200. [2021-08-29 22:22:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.5477386934673367) internal successors, (507), 199 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 507 transitions. [2021-08-29 22:22:31,620 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 507 transitions. Word has length 11 [2021-08-29 22:22:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:31,620 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 507 transitions. [2021-08-29 22:22:31,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,621 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 507 transitions. [2021-08-29 22:22:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:22:31,626 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:31,626 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:31,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:22:31,626 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:31,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2051009510, now seen corresponding path program 1 times [2021-08-29 22:22:31,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:31,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881493790] [2021-08-29 22:22:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:31,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:31,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:31,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881493790] [2021-08-29 22:22:31,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881493790] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:31,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:31,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:31,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917542572] [2021-08-29 22:22:31,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:31,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:31,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:31,714 INFO L87 Difference]: Start difference. First operand 200 states and 507 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:31,751 INFO L93 Difference]: Finished difference Result 235 states and 547 transitions. [2021-08-29 22:22:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:22:31,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-29 22:22:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:31,753 INFO L225 Difference]: With dead ends: 235 [2021-08-29 22:22:31,753 INFO L226 Difference]: Without dead ends: 167 [2021-08-29 22:22:31,754 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:31,754 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.54ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:31,755 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 25 Invalid, 45 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 28.54ms Time] [2021-08-29 22:22:31,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-08-29 22:22:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-08-29 22:22:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.283132530120482) internal successors, (379), 166 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 379 transitions. [2021-08-29 22:22:31,760 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 379 transitions. Word has length 12 [2021-08-29 22:22:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:31,760 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 379 transitions. [2021-08-29 22:22:31,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 379 transitions. [2021-08-29 22:22:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:22:31,761 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:31,761 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:31,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:22:31,762 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:31,763 INFO L82 PathProgramCache]: Analyzing trace with hash 753016455, now seen corresponding path program 1 times [2021-08-29 22:22:31,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:31,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185398065] [2021-08-29 22:22:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:31,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:31,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:31,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185398065] [2021-08-29 22:22:31,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185398065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:31,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:31,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:31,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104417429] [2021-08-29 22:22:31,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:22:31,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:22:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:31,812 INFO L87 Difference]: Start difference. First operand 167 states and 379 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:31,862 INFO L93 Difference]: Finished difference Result 168 states and 357 transitions. [2021-08-29 22:22:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:22:31,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-29 22:22:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:31,863 INFO L225 Difference]: With dead ends: 168 [2021-08-29 22:22:31,863 INFO L226 Difference]: Without dead ends: 126 [2021-08-29 22:22:31,863 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.91ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:31,864 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.72ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:31,864 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 32 Invalid, 57 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 38.72ms Time] [2021-08-29 22:22:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-08-29 22:22:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-08-29 22:22:31,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.096) internal successors, (262), 125 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 262 transitions. [2021-08-29 22:22:31,868 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 262 transitions. Word has length 13 [2021-08-29 22:22:31,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:31,868 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 262 transitions. [2021-08-29 22:22:31,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,868 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 262 transitions. [2021-08-29 22:22:31,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:22:31,869 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:31,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:31,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 22:22:31,869 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:31,870 INFO L82 PathProgramCache]: Analyzing trace with hash 732351805, now seen corresponding path program 1 times [2021-08-29 22:22:31,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:31,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75097984] [2021-08-29 22:22:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:31,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:31,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:31,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75097984] [2021-08-29 22:22:31,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75097984] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:31,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:31,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:22:31,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012377928] [2021-08-29 22:22:31,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:22:31,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:22:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:31,923 INFO L87 Difference]: Start difference. First operand 126 states and 262 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:31,962 INFO L93 Difference]: Finished difference Result 193 states and 382 transitions. [2021-08-29 22:22:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:22:31,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 22:22:31,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:31,964 INFO L225 Difference]: With dead ends: 193 [2021-08-29 22:22:31,964 INFO L226 Difference]: Without dead ends: 146 [2021-08-29 22:22:31,966 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.89ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:31,967 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.52ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:31,970 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 53 Invalid, 49 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 30.52ms Time] [2021-08-29 22:22:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-29 22:22:31,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 126. [2021-08-29 22:22:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.064) internal successors, (258), 125 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 258 transitions. [2021-08-29 22:22:31,983 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 258 transitions. Word has length 14 [2021-08-29 22:22:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:31,983 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 258 transitions. [2021-08-29 22:22:31,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 258 transitions. [2021-08-29 22:22:31,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:22:31,984 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:31,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:31,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 22:22:31,985 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:31,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:31,985 INFO L82 PathProgramCache]: Analyzing trace with hash 62296389, now seen corresponding path program 2 times [2021-08-29 22:22:31,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:31,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793518051] [2021-08-29 22:22:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:31,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:32,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:32,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793518051] [2021-08-29 22:22:32,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793518051] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:32,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:32,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:32,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430495056] [2021-08-29 22:22:32,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:32,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:32,026 INFO L87 Difference]: Start difference. First operand 126 states and 258 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:32,049 INFO L93 Difference]: Finished difference Result 181 states and 358 transitions. [2021-08-29 22:22:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:32,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 22:22:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:32,051 INFO L225 Difference]: With dead ends: 181 [2021-08-29 22:22:32,051 INFO L226 Difference]: Without dead ends: 150 [2021-08-29 22:22:32,051 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.20ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:32,052 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.03ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:32,052 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 31 Invalid, 34 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 20.03ms Time] [2021-08-29 22:22:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-08-29 22:22:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 120. [2021-08-29 22:22:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.0168067226890756) internal successors, (240), 119 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 240 transitions. [2021-08-29 22:22:32,056 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 240 transitions. Word has length 14 [2021-08-29 22:22:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:32,056 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 240 transitions. [2021-08-29 22:22:32,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,057 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 240 transitions. [2021-08-29 22:22:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:22:32,057 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:32,057 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:32,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 22:22:32,058 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:32,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1609120527, now seen corresponding path program 1 times [2021-08-29 22:22:32,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:32,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703939580] [2021-08-29 22:22:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:32,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:32,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:32,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:32,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703939580] [2021-08-29 22:22:32,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703939580] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:32,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:32,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:22:32,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397261797] [2021-08-29 22:22:32,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:22:32,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:22:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:32,103 INFO L87 Difference]: Start difference. First operand 120 states and 240 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:32,150 INFO L93 Difference]: Finished difference Result 155 states and 300 transitions. [2021-08-29 22:22:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:22:32,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 22:22:32,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:32,151 INFO L225 Difference]: With dead ends: 155 [2021-08-29 22:22:32,151 INFO L226 Difference]: Without dead ends: 131 [2021-08-29 22:22:32,152 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.54ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:22:32,152 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 26 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.02ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:32,153 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 45 Invalid, 55 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 28.02ms Time] [2021-08-29 22:22:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-29 22:22:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2021-08-29 22:22:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.9292035398230087) internal successors, (218), 113 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 218 transitions. [2021-08-29 22:22:32,156 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 218 transitions. Word has length 15 [2021-08-29 22:22:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:32,157 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 218 transitions. [2021-08-29 22:22:32,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 218 transitions. [2021-08-29 22:22:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:22:32,157 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:32,158 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:32,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 22:22:32,158 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:32,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:32,158 INFO L82 PathProgramCache]: Analyzing trace with hash 492831695, now seen corresponding path program 2 times [2021-08-29 22:22:32,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:32,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516255055] [2021-08-29 22:22:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:32,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:32,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:32,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516255055] [2021-08-29 22:22:32,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516255055] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:32,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:32,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:22:32,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704186297] [2021-08-29 22:22:32,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:22:32,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:32,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:22:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:32,205 INFO L87 Difference]: Start difference. First operand 114 states and 218 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:32,236 INFO L93 Difference]: Finished difference Result 167 states and 309 transitions. [2021-08-29 22:22:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:22:32,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 22:22:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:32,238 INFO L225 Difference]: With dead ends: 167 [2021-08-29 22:22:32,238 INFO L226 Difference]: Without dead ends: 120 [2021-08-29 22:22:32,238 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.26ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:32,239 INFO L928 BasicCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.21ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:32,240 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 49 Invalid, 44 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 24.21ms Time] [2021-08-29 22:22:32,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-29 22:22:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 110. [2021-08-29 22:22:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.853211009174312) internal successors, (202), 109 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 202 transitions. [2021-08-29 22:22:32,243 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 202 transitions. Word has length 15 [2021-08-29 22:22:32,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:32,244 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 202 transitions. [2021-08-29 22:22:32,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 202 transitions. [2021-08-29 22:22:32,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:22:32,245 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:32,245 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:32,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 22:22:32,246 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:32,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:32,247 INFO L82 PathProgramCache]: Analyzing trace with hash -94627425, now seen corresponding path program 3 times [2021-08-29 22:22:32,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:32,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402633301] [2021-08-29 22:22:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:32,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:32,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:32,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402633301] [2021-08-29 22:22:32,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402633301] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:32,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:32,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:22:32,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435169252] [2021-08-29 22:22:32,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:22:32,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:32,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:22:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:32,333 INFO L87 Difference]: Start difference. First operand 110 states and 202 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:32,374 INFO L93 Difference]: Finished difference Result 106 states and 192 transitions. [2021-08-29 22:22:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:22:32,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 22:22:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:32,376 INFO L225 Difference]: With dead ends: 106 [2021-08-29 22:22:32,376 INFO L226 Difference]: Without dead ends: 30 [2021-08-29 22:22:32,376 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.63ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:22:32,376 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.39ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:32,377 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 30 Invalid, 59 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 31.39ms Time] [2021-08-29 22:22:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-29 22:22:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-29 22:22:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-08-29 22:22:32,379 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 15 [2021-08-29 22:22:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:32,379 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-08-29 22:22:32,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2021-08-29 22:22:32,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 22:22:32,380 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:32,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:32,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-29 22:22:32,380 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:32,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:32,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1382968819, now seen corresponding path program 1 times [2021-08-29 22:22:32,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:32,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29249142] [2021-08-29 22:22:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:32,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:22:32,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:32,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29249142] [2021-08-29 22:22:32,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29249142] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:32,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:32,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:32,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429253326] [2021-08-29 22:22:32,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:22:32,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:22:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:32,445 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:32,457 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2021-08-29 22:22:32,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:32,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-29 22:22:32,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:32,458 INFO L225 Difference]: With dead ends: 29 [2021-08-29 22:22:32,458 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:22:32,459 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.88ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:32,459 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.16ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.48ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:32,460 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 13 Invalid, 12 Unknown, 0 Unchecked, 0.16ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 7.48ms Time] [2021-08-29 22:22:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:22:32,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:22:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:22:32,461 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-29 22:22:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:32,461 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:22:32,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:22:32,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:22:32,464 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-08-29 22:22:32,465 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-08-29 22:22:32,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-08-29 22:22:32,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-08-29 22:22:32,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-29 22:22:32,469 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:22:32,469 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:22:32,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:22:32 BasicIcfg [2021-08-29 22:22:32,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:22:32,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:22:32,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:22:32,473 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:22:32,473 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:22:28" (3/4) ... [2021-08-29 22:22:32,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:22:32,484 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:22:32,484 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:22:32,484 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-29 22:22:32,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-29 22:22:32,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:22:32,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:22:32,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:22:32,520 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:22:32,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:22:32,521 INFO L158 Benchmark]: Toolchain (without parser) took 5332.81ms. Allocated memory was 60.8MB in the beginning and 92.3MB in the end (delta: 31.5MB). Free memory was 40.0MB in the beginning and 44.9MB in the end (delta: -4.9MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2021-08-29 22:22:32,521 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 51.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:22:32,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.95ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 35.1MB in the end (delta: 4.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 22:22:32,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.36ms. Allocated memory is still 60.8MB. Free memory was 35.0MB in the beginning and 33.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:22:32,523 INFO L158 Benchmark]: Boogie Preprocessor took 19.43ms. Allocated memory is still 60.8MB. Free memory was 32.9MB in the beginning and 31.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:22:32,523 INFO L158 Benchmark]: RCFGBuilder took 366.33ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 31.7MB in the beginning and 52.5MB in the end (delta: -20.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-08-29 22:22:32,523 INFO L158 Benchmark]: TraceAbstraction took 4469.50ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 52.3MB in the beginning and 47.9MB in the end (delta: 4.4MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-08-29 22:22:32,524 INFO L158 Benchmark]: Witness Printer took 48.13ms. Allocated memory is still 92.3MB. Free memory was 47.9MB in the beginning and 44.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:22:32,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 51.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.95ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 35.1MB in the end (delta: 4.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.36ms. Allocated memory is still 60.8MB. Free memory was 35.0MB in the beginning and 33.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.43ms. Allocated memory is still 60.8MB. Free memory was 32.9MB in the beginning and 31.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 366.33ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 31.7MB in the beginning and 52.5MB in the end (delta: -20.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4469.50ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 52.3MB in the beginning and 47.9MB in the end (delta: 4.4MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * Witness Printer took 48.13ms. Allocated memory is still 92.3MB. Free memory was 47.9MB in the beginning and 44.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2448.42ms, 91 PlacesBefore, 31 PlacesAfterwards, 83 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2757 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1458, positive: 1362, positive conditional: 0, positive unconditional: 1362, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 981, positive: 934, positive conditional: 0, positive unconditional: 934, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 981, positive: 920, positive conditional: 0, positive unconditional: 920, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 61, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 111, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1458, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 981, unknown conditional: 0, unknown unconditional: 981] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4336.76ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 23.46ms, AutomataDifference: 554.44ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2519.49ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 264 SdHoareTripleChecker+Valid, 320.62ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 400 SdHoareTripleChecker+Invalid, 251.31ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 356 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 416 IncrementalHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 170 mSDtfsCounter, 416 mSolverCounterSat, 8.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 153.76ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred in iteration=1, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 135.75ms AutomataMinimizationTime, 13 MinimizatonAttempts, 310 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.74ms SsaConstructionTime, 207.12ms SatisfiabilityAnalysisTime, 626.13ms InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-29 22:22:32,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...