./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel/bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel/bakery-2.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37eb43704452acda7cf4879bca67f02ca679f494 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-04 18:43:00,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-04 18:43:00,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-04 18:43:00,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-04 18:43:00,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-04 18:43:00,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-04 18:43:00,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-04 18:43:00,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-04 18:43:00,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-04 18:43:00,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-04 18:43:00,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-04 18:43:00,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-04 18:43:00,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-04 18:43:00,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-04 18:43:00,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-04 18:43:00,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-04 18:43:00,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-04 18:43:00,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-04 18:43:00,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-04 18:43:00,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-04 18:43:00,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-04 18:43:00,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-04 18:43:00,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-04 18:43:00,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-04 18:43:00,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-04 18:43:00,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-04 18:43:00,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-04 18:43:00,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-04 18:43:00,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-04 18:43:00,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-04 18:43:00,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-04 18:43:00,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-04 18:43:00,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-04 18:43:00,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-04 18:43:00,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-04 18:43:00,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-04 18:43:00,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-04 18:43:00,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-04 18:43:00,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-04 18:43:00,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-04 18:43:00,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-04 18:43:00,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-04 18:43:00,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-04 18:43:00,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-04 18:43:00,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-04 18:43:00,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-04 18:43:00,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-04 18:43:00,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-04 18:43:00,232 INFO L138 SettingsManager]: * Use SBE=true [2021-10-04 18:43:00,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-04 18:43:00,233 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-04 18:43:00,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-04 18:43:00,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-04 18:43:00,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-04 18:43:00,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-04 18:43:00,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-04 18:43:00,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-04 18:43:00,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-04 18:43:00,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-04 18:43:00,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-04 18:43:00,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-04 18:43:00,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-04 18:43:00,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-04 18:43:00,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-04 18:43:00,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:43:00,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-04 18:43:00,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-04 18:43:00,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-04 18:43:00,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-04 18:43:00,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-04 18:43:00,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-04 18:43:00,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-04 18:43:00,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37eb43704452acda7cf4879bca67f02ca679f494 [2021-10-04 18:43:00,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-04 18:43:00,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-04 18:43:00,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-04 18:43:00,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-04 18:43:00,711 INFO L275 PluginConnector]: CDTParser initialized [2021-10-04 18:43:00,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/bakery-2.wvr.c [2021-10-04 18:43:00,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf1b0a9ac/6b322242f3d842aeadf379f8fb7d13a1/FLAG098a053af [2021-10-04 18:43:01,433 INFO L306 CDTParser]: Found 1 translation units. [2021-10-04 18:43:01,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/bakery-2.wvr.c [2021-10-04 18:43:01,436 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:43:01,436 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:43:01,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf1b0a9ac/6b322242f3d842aeadf379f8fb7d13a1/FLAG098a053af [2021-10-04 18:43:01,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf1b0a9ac/6b322242f3d842aeadf379f8fb7d13a1 [2021-10-04 18:43:01,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-04 18:43:01,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-04 18:43:01,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-04 18:43:01,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-04 18:43:01,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-04 18:43:01,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:43:01" (1/1) ... [2021-10-04 18:43:01,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d037a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:01, skipping insertion in model container [2021-10-04 18:43:01,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:43:01" (1/1) ... [2021-10-04 18:43:01,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-04 18:43:01,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-04 18:43:02,030 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:43:02,078 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/bakery-2.wvr.c[1482,1495] [2021-10-04 18:43:02,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:43:02,092 INFO L203 MainTranslator]: Completed pre-run [2021-10-04 18:43:02,106 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:43:02,147 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/bakery-2.wvr.c[1482,1495] [2021-10-04 18:43:02,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:43:02,172 INFO L208 MainTranslator]: Completed translation [2021-10-04 18:43:02,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02 WrapperNode [2021-10-04 18:43:02,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-04 18:43:02,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-04 18:43:02,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-04 18:43:02,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-04 18:43:02,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-04 18:43:02,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-04 18:43:02,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-04 18:43:02,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-04 18:43:02,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-04 18:43:02,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-04 18:43:02,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-04 18:43:02,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-04 18:43:02,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (1/1) ... [2021-10-04 18:43:02,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:43:02,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-04 18:43:02,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-04 18:43:02,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-04 18:43:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-04 18:43:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-04 18:43:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-04 18:43:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-04 18:43:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-04 18:43:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-04 18:43:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-04 18:43:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-04 18:43:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-04 18:43:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-04 18:43:02,426 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-04 18:43:02,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-04 18:43:02,758 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-04 18:43:02,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:43:02 BoogieIcfgContainer [2021-10-04 18:43:02,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-04 18:43:02,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-04 18:43:02,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-04 18:43:02,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-04 18:43:02,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.10 06:43:01" (1/3) ... [2021-10-04 18:43:02,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eecc321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:43:02, skipping insertion in model container [2021-10-04 18:43:02,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:43:02" (2/3) ... [2021-10-04 18:43:02,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eecc321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:43:02, skipping insertion in model container [2021-10-04 18:43:02,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:43:02" (3/3) ... [2021-10-04 18:43:02,771 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.c [2021-10-04 18:43:02,777 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-04 18:43:02,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-04 18:43:02,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-04 18:43:02,778 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-04 18:43:02,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,824 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,824 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,825 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,825 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,825 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,826 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,826 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,826 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,827 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,827 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,827 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,827 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,828 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,828 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,828 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,829 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,829 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,830 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,830 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,830 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,830 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,831 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,831 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,831 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,832 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,832 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,833 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,833 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,833 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,834 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,836 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,836 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,836 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,837 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,837 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,837 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,838 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,838 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,838 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,839 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,839 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,839 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,840 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,840 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,840 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,841 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,841 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,841 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,842 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,842 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,842 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,842 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,843 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,843 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,843 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,844 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,844 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,845 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,845 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,845 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,846 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,846 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,846 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,847 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,847 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,847 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,848 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,848 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,849 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,849 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,853 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,853 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,854 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,859 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,859 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,859 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,860 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:43:02,875 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-04 18:43:02,941 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-04 18:43:02,952 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-04 18:43:02,952 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-04 18:43:02,973 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-04 18:43:02,985 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 127 transitions, 270 flow [2021-10-04 18:43:02,989 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 127 transitions, 270 flow [2021-10-04 18:43:02,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 127 transitions, 270 flow [2021-10-04 18:43:03,099 INFO L129 PetriNetUnfolder]: 8/125 cut-off events. [2021-10-04 18:43:03,099 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-04 18:43:03,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 8/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2021-10-04 18:43:03,111 INFO L116 LiptonReduction]: Number of co-enabled transitions 2408 [2021-10-04 18:43:05,927 INFO L131 LiptonReduction]: Checked pairs total: 8341 [2021-10-04 18:43:05,927 INFO L133 LiptonReduction]: Total number of compositions: 115 [2021-10-04 18:43:05,937 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 38 transitions, 92 flow [2021-10-04 18:43:05,969 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 314 states, 313 states have (on average 2.65814696485623) internal successors, (832), 313 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 313 states have (on average 2.65814696485623) internal successors, (832), 313 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-04 18:43:05,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:05,990 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:05,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash -643909506, now seen corresponding path program 1 times [2021-10-04 18:43:06,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:06,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310133512] [2021-10-04 18:43:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:06,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:06,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:06,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310133512] [2021-10-04 18:43:06,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310133512] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:06,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:06,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-04 18:43:06,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198057532] [2021-10-04 18:43:06,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-04 18:43:06,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:06,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-04 18:43:06,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-04 18:43:06,222 INFO L87 Difference]: Start difference. First operand has 314 states, 313 states have (on average 2.65814696485623) internal successors, (832), 313 states have internal predecessors, (832), 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 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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) [2021-10-04 18:43:06,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:06,250 INFO L93 Difference]: Finished difference Result 314 states and 756 transitions. [2021-10-04 18:43:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-04 18:43:06,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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 [2021-10-04 18:43:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:06,268 INFO L225 Difference]: With dead ends: 314 [2021-10-04 18:43:06,268 INFO L226 Difference]: Without dead ends: 314 [2021-10-04 18:43:06,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-04 18:43:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-04 18:43:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-10-04 18:43:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 2.415335463258786) internal successors, (756), 313 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 756 transitions. [2021-10-04 18:43:06,351 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 756 transitions. Word has length 17 [2021-10-04 18:43:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:06,352 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 756 transitions. [2021-10-04 18:43:06,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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) [2021-10-04 18:43:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 756 transitions. [2021-10-04 18:43:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-04 18:43:06,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:06,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:06,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-04 18:43:06,359 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:06,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:06,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1750185449, now seen corresponding path program 1 times [2021-10-04 18:43:06,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:06,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987401969] [2021-10-04 18:43:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:06,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:06,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:06,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987401969] [2021-10-04 18:43:06,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987401969] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:06,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:06,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-04 18:43:06,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586661998] [2021-10-04 18:43:06,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-04 18:43:06,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-04 18:43:06,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:43:06,666 INFO L87 Difference]: Start difference. First operand 314 states and 756 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:06,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:06,774 INFO L93 Difference]: Finished difference Result 365 states and 835 transitions. [2021-10-04 18:43:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-04 18:43:06,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-04 18:43:06,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:06,778 INFO L225 Difference]: With dead ends: 365 [2021-10-04 18:43:06,778 INFO L226 Difference]: Without dead ends: 312 [2021-10-04 18:43:06,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 66.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:43:06,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-04 18:43:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 278. [2021-10-04 18:43:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.3898916967509027) internal successors, (662), 277 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 662 transitions. [2021-10-04 18:43:06,798 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 662 transitions. Word has length 26 [2021-10-04 18:43:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:06,798 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 662 transitions. [2021-10-04 18:43:06,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:06,799 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 662 transitions. [2021-10-04 18:43:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-04 18:43:06,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:06,803 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:06,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-04 18:43:06,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:06,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2060640891, now seen corresponding path program 2 times [2021-10-04 18:43:06,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:06,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558656675] [2021-10-04 18:43:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:06,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:06,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:06,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:06,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558656675] [2021-10-04 18:43:06,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558656675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:06,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:06,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:43:06,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061662636] [2021-10-04 18:43:06,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-04 18:43:06,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:06,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-04 18:43:06,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-04 18:43:06,870 INFO L87 Difference]: Start difference. First operand 278 states and 662 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:06,935 INFO L93 Difference]: Finished difference Result 410 states and 933 transitions. [2021-10-04 18:43:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-04 18:43:06,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-04 18:43:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:06,939 INFO L225 Difference]: With dead ends: 410 [2021-10-04 18:43:06,939 INFO L226 Difference]: Without dead ends: 410 [2021-10-04 18:43:06,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-04 18:43:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-04 18:43:06,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 254. [2021-10-04 18:43:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.292490118577075) internal successors, (580), 253 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 580 transitions. [2021-10-04 18:43:06,953 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 580 transitions. Word has length 26 [2021-10-04 18:43:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:06,954 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 580 transitions. [2021-10-04 18:43:06,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 580 transitions. [2021-10-04 18:43:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-04 18:43:06,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:06,957 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:06,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-04 18:43:06,957 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:06,958 INFO L82 PathProgramCache]: Analyzing trace with hash -120184283, now seen corresponding path program 3 times [2021-10-04 18:43:06,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:06,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474676605] [2021-10-04 18:43:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:06,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:07,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:07,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474676605] [2021-10-04 18:43:07,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474676605] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:07,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:07,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:43:07,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098348146] [2021-10-04 18:43:07,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-04 18:43:07,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:07,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-04 18:43:07,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-04 18:43:07,029 INFO L87 Difference]: Start difference. First operand 254 states and 580 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:07,050 INFO L93 Difference]: Finished difference Result 278 states and 613 transitions. [2021-10-04 18:43:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:43:07,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-04 18:43:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:07,053 INFO L225 Difference]: With dead ends: 278 [2021-10-04 18:43:07,053 INFO L226 Difference]: Without dead ends: 254 [2021-10-04 18:43:07,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:43:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-04 18:43:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-10-04 18:43:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.2529644268774702) internal successors, (570), 253 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 570 transitions. [2021-10-04 18:43:07,063 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 570 transitions. Word has length 26 [2021-10-04 18:43:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:07,064 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 570 transitions. [2021-10-04 18:43:07,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 570 transitions. [2021-10-04 18:43:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-04 18:43:07,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:07,066 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:07,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-04 18:43:07,066 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:07,067 INFO L82 PathProgramCache]: Analyzing trace with hash -981100093, now seen corresponding path program 4 times [2021-10-04 18:43:07,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:07,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897301705] [2021-10-04 18:43:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:07,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:07,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:07,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897301705] [2021-10-04 18:43:07,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897301705] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:07,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:07,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-04 18:43:07,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401588153] [2021-10-04 18:43:07,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-04 18:43:07,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-04 18:43:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:43:07,289 INFO L87 Difference]: Start difference. First operand 254 states and 570 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:07,536 INFO L93 Difference]: Finished difference Result 412 states and 893 transitions. [2021-10-04 18:43:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-04 18:43:07,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-04 18:43:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:07,540 INFO L225 Difference]: With dead ends: 412 [2021-10-04 18:43:07,540 INFO L226 Difference]: Without dead ends: 412 [2021-10-04 18:43:07,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 134.2ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-10-04 18:43:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-04 18:43:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 278. [2021-10-04 18:43:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.1768953068592056) internal successors, (603), 277 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 603 transitions. [2021-10-04 18:43:07,552 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 603 transitions. Word has length 26 [2021-10-04 18:43:07,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:07,553 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 603 transitions. [2021-10-04 18:43:07,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,554 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 603 transitions. [2021-10-04 18:43:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-04 18:43:07,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:07,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:07,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-04 18:43:07,556 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:07,557 INFO L82 PathProgramCache]: Analyzing trace with hash 103630301, now seen corresponding path program 5 times [2021-10-04 18:43:07,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:07,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115379584] [2021-10-04 18:43:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:07,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:07,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:07,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115379584] [2021-10-04 18:43:07,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115379584] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:07,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:07,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-04 18:43:07,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961757689] [2021-10-04 18:43:07,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-04 18:43:07,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-04 18:43:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:43:07,660 INFO L87 Difference]: Start difference. First operand 278 states and 603 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:07,726 INFO L93 Difference]: Finished difference Result 311 states and 654 transitions. [2021-10-04 18:43:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-04 18:43:07,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-04 18:43:07,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:07,729 INFO L225 Difference]: With dead ends: 311 [2021-10-04 18:43:07,729 INFO L226 Difference]: Without dead ends: 206 [2021-10-04 18:43:07,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-04 18:43:07,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-04 18:43:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 192. [2021-10-04 18:43:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.136125654450262) internal successors, (408), 191 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 408 transitions. [2021-10-04 18:43:07,737 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 408 transitions. Word has length 26 [2021-10-04 18:43:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:07,737 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 408 transitions. [2021-10-04 18:43:07,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 408 transitions. [2021-10-04 18:43:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-04 18:43:07,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:07,739 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:07,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-04 18:43:07,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:07,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1014370821, now seen corresponding path program 6 times [2021-10-04 18:43:07,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:07,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636048473] [2021-10-04 18:43:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:07,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:07,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:07,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636048473] [2021-10-04 18:43:07,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636048473] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:07,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:07,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-04 18:43:07,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153076557] [2021-10-04 18:43:07,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-04 18:43:07,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-04 18:43:07,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-04 18:43:07,785 INFO L87 Difference]: Start difference. First operand 192 states and 408 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:07,794 INFO L93 Difference]: Finished difference Result 192 states and 400 transitions. [2021-10-04 18:43:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-04 18:43:07,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-04 18:43:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:07,796 INFO L225 Difference]: With dead ends: 192 [2021-10-04 18:43:07,797 INFO L226 Difference]: Without dead ends: 192 [2021-10-04 18:43:07,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-04 18:43:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-04 18:43:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-04 18:43:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.094240837696335) internal successors, (400), 191 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 400 transitions. [2021-10-04 18:43:07,804 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 400 transitions. Word has length 26 [2021-10-04 18:43:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:07,804 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 400 transitions. [2021-10-04 18:43:07,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 400 transitions. [2021-10-04 18:43:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-04 18:43:07,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:07,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:07,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-04 18:43:07,807 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:07,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:07,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1625489575, now seen corresponding path program 7 times [2021-10-04 18:43:07,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:07,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030717715] [2021-10-04 18:43:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:07,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:07,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:07,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030717715] [2021-10-04 18:43:07,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030717715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:07,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:07,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-04 18:43:07,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917214917] [2021-10-04 18:43:07,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-04 18:43:07,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-04 18:43:07,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:43:07,986 INFO L87 Difference]: Start difference. First operand 192 states and 400 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:08,154 INFO L93 Difference]: Finished difference Result 310 states and 623 transitions. [2021-10-04 18:43:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-04 18:43:08,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-04 18:43:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:08,157 INFO L225 Difference]: With dead ends: 310 [2021-10-04 18:43:08,158 INFO L226 Difference]: Without dead ends: 278 [2021-10-04 18:43:08,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-04 18:43:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-04 18:43:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 180. [2021-10-04 18:43:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.022346368715084) internal successors, (362), 179 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 362 transitions. [2021-10-04 18:43:08,165 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 362 transitions. Word has length 26 [2021-10-04 18:43:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:08,166 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 362 transitions. [2021-10-04 18:43:08,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,166 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 362 transitions. [2021-10-04 18:43:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-04 18:43:08,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:08,167 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:08,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-04 18:43:08,168 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:08,169 INFO L82 PathProgramCache]: Analyzing trace with hash -218097683, now seen corresponding path program 8 times [2021-10-04 18:43:08,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:08,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157526518] [2021-10-04 18:43:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:08,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:08,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:08,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157526518] [2021-10-04 18:43:08,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157526518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:08,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:08,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-04 18:43:08,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382696793] [2021-10-04 18:43:08,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-04 18:43:08,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-04 18:43:08,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:43:08,308 INFO L87 Difference]: Start difference. First operand 180 states and 362 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:08,482 INFO L93 Difference]: Finished difference Result 264 states and 522 transitions. [2021-10-04 18:43:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-04 18:43:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-04 18:43:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:08,484 INFO L225 Difference]: With dead ends: 264 [2021-10-04 18:43:08,484 INFO L226 Difference]: Without dead ends: 232 [2021-10-04 18:43:08,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-04 18:43:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-04 18:43:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 178. [2021-10-04 18:43:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.005649717514124) internal successors, (355), 177 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 355 transitions. [2021-10-04 18:43:08,493 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 355 transitions. Word has length 26 [2021-10-04 18:43:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:08,493 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 355 transitions. [2021-10-04 18:43:08,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 355 transitions. [2021-10-04 18:43:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-04 18:43:08,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:08,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:08,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-04 18:43:08,496 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:08,496 INFO L82 PathProgramCache]: Analyzing trace with hash -218085146, now seen corresponding path program 1 times [2021-10-04 18:43:08,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:08,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444291340] [2021-10-04 18:43:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:08,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:08,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:08,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444291340] [2021-10-04 18:43:08,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444291340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:08,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:08,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-04 18:43:08,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880872160] [2021-10-04 18:43:08,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-04 18:43:08,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:08,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-04 18:43:08,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:43:08,591 INFO L87 Difference]: Start difference. First operand 178 states and 355 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:08,678 INFO L93 Difference]: Finished difference Result 204 states and 404 transitions. [2021-10-04 18:43:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-04 18:43:08,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 27 [2021-10-04 18:43:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:08,681 INFO L225 Difference]: With dead ends: 204 [2021-10-04 18:43:08,681 INFO L226 Difference]: Without dead ends: 126 [2021-10-04 18:43:08,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-04 18:43:08,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-04 18:43:08,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-04 18:43:08,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.96) internal successors, (245), 125 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 245 transitions. [2021-10-04 18:43:08,687 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 245 transitions. Word has length 27 [2021-10-04 18:43:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:08,687 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 245 transitions. [2021-10-04 18:43:08,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,688 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 245 transitions. [2021-10-04 18:43:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-04 18:43:08,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:43:08,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:43:08,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-04 18:43:08,691 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:43:08,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:43:08,692 INFO L82 PathProgramCache]: Analyzing trace with hash -639683509, now seen corresponding path program 1 times [2021-10-04 18:43:08,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:43:08,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963585873] [2021-10-04 18:43:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:43:08,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:43:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:43:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:43:08,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:43:08,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963585873] [2021-10-04 18:43:08,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963585873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:43:08,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:43:08,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-04 18:43:08,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119609692] [2021-10-04 18:43:08,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-04 18:43:08,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:43:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-04 18:43:08,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:43:08,833 INFO L87 Difference]: Start difference. First operand 126 states and 245 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:43:08,909 INFO L93 Difference]: Finished difference Result 94 states and 183 transitions. [2021-10-04 18:43:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-04 18:43:08,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 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 28 [2021-10-04 18:43:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:43:08,910 INFO L225 Difference]: With dead ends: 94 [2021-10-04 18:43:08,910 INFO L226 Difference]: Without dead ends: 0 [2021-10-04 18:43:08,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-04 18:43:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-04 18:43:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-04 18:43:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-04 18:43:08,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-04 18:43:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:43:08,913 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-04 18:43:08,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:43:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-04 18:43:08,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-04 18:43:08,917 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-04 18:43:08,917 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-04 18:43:08,917 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-04 18:43:08,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-04 18:43:08,922 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-04 18:43:08,922 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-04 18:43:08,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 06:43:08 BasicIcfg [2021-10-04 18:43:08,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-04 18:43:08,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-04 18:43:08,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-04 18:43:08,928 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-04 18:43:08,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:43:02" (3/4) ... [2021-10-04 18:43:08,932 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-04 18:43:08,940 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-04 18:43:08,941 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-04 18:43:08,947 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-04 18:43:08,947 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 18:43:08,948 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 18:43:09,005 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-04 18:43:09,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-04 18:43:09,007 INFO L168 Benchmark]: Toolchain (without parser) took 7222.09 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 24.1 MB in the beginning and 43.8 MB in the end (delta: -19.7 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-10-04 18:43:09,008 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 48.2 MB. Free memory is still 29.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 18:43:09,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.00 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 35.6 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-10-04 18:43:09,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.46 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 33.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:43:09,009 INFO L168 Benchmark]: Boogie Preprocessor took 54.88 ms. Allocated memory is still 58.7 MB. Free memory was 33.6 MB in the beginning and 32.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:43:09,010 INFO L168 Benchmark]: RCFGBuilder took 458.15 ms. Allocated memory is still 58.7 MB. Free memory was 32.4 MB in the beginning and 35.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-04 18:43:09,010 INFO L168 Benchmark]: TraceAbstraction took 6162.59 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 34.7 MB in the beginning and 46.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-10-04 18:43:09,011 INFO L168 Benchmark]: Witness Printer took 77.57 ms. Allocated memory is still 104.9 MB. Free memory was 46.9 MB in the beginning and 43.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:43:09,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 48.2 MB. Free memory is still 29.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.00 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 35.6 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.46 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 33.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.88 ms. Allocated memory is still 58.7 MB. Free memory was 33.6 MB in the beginning and 32.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 458.15 ms. Allocated memory is still 58.7 MB. Free memory was 32.4 MB in the beginning and 35.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6162.59 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 34.7 MB in the beginning and 46.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Witness Printer took 77.57 ms. Allocated memory is still 104.9 MB. Free memory was 46.9 MB in the beginning and 43.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2938.9ms, 126 PlacesBefore, 40 PlacesAfterwards, 127 TransitionsBefore, 38 TransitionsAfterwards, 2408 CoEnabledTransitionPairs, 8 FixpointIterations, 51 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 115 TotalNumberOfCompositions, 8341 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4133, positive: 3825, positive conditional: 0, positive unconditional: 3825, negative: 308, negative conditional: 0, negative unconditional: 308, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1904, positive: 1815, positive conditional: 0, positive unconditional: 1815, negative: 89, negative conditional: 0, negative unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1904, positive: 1780, positive conditional: 0, positive unconditional: 1780, negative: 124, negative conditional: 0, negative unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 124, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 89, negative conditional: 0, negative unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 166, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 141, negative conditional: 0, negative unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4133, positive: 2010, positive conditional: 0, positive unconditional: 2010, negative: 219, negative conditional: 0, negative unconditional: 219, unknown: 1904, unknown conditional: 0, unknown unconditional: 1904] , Statistics on independence cache: Total cache size (in pairs): 273, Positive cache size: 238, Positive conditional cache size: 0, Positive unconditional cache size: 238, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 174 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5982.8ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 39.2ms, AutomataDifference: 1135.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3017.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 505 SDtfs, 526 SDslu, 1214 SDs, 0 SdLazy, 736 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 470.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 585.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=314occurred in iteration=0, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 148.6ms AutomataMinimizationTime, 11 MinimizatonAttempts, 490 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.3ms SsaConstructionTime, 330.1ms SatisfiabilityAnalysisTime, 1010.9ms InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 269 ConstructedInterpolants, 0 QuantifiedInterpolants, 1121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-04 18:43:09,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...