./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more/mts.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/popl20-more/mts.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 0ca2157006b010db24e2c1588908a50564dd891c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-03 12:33:08,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-03 12:33:08,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-03 12:33:08,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-03 12:33:08,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-03 12:33:08,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-03 12:33:08,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-03 12:33:08,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-03 12:33:08,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-03 12:33:08,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-03 12:33:08,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-03 12:33:08,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-03 12:33:08,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-03 12:33:08,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-03 12:33:08,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-03 12:33:08,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-03 12:33:08,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-03 12:33:08,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-03 12:33:08,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-03 12:33:08,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-03 12:33:08,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-03 12:33:08,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-03 12:33:08,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-03 12:33:08,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-03 12:33:08,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-03 12:33:08,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-03 12:33:08,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-03 12:33:08,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-03 12:33:08,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-03 12:33:08,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-03 12:33:08,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-03 12:33:08,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-03 12:33:08,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-03 12:33:08,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-03 12:33:08,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-03 12:33:08,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-03 12:33:08,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-03 12:33:08,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-03 12:33:08,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-03 12:33:08,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-03 12:33:08,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-03 12:33:08,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-03 12:33:08,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-03 12:33:08,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-03 12:33:08,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-03 12:33:08,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-03 12:33:08,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-03 12:33:08,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-03 12:33:08,446 INFO L138 SettingsManager]: * Use SBE=true [2021-10-03 12:33:08,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-03 12:33:08,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-03 12:33:08,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-03 12:33:08,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-03 12:33:08,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-03 12:33:08,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-03 12:33:08,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-03 12:33:08,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-03 12:33:08,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-03 12:33:08,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-03 12:33:08,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-03 12:33:08,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-03 12:33:08,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-03 12:33:08,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-03 12:33:08,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-03 12:33:08,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:33:08,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-03 12:33:08,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-03 12:33:08,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-03 12:33:08,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-03 12:33:08,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-03 12:33:08,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-03 12:33:08,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-03 12:33:08,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ca2157006b010db24e2c1588908a50564dd891c [2021-10-03 12:33:08,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-03 12:33:08,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-03 12:33:08,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-03 12:33:08,878 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-03 12:33:08,879 INFO L275 PluginConnector]: CDTParser initialized [2021-10-03 12:33:08,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more/mts.wvr.c [2021-10-03 12:33:08,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5efc7238c/de9642c4e36f46869ae5f3d9e05265ec/FLAG4b110f407 [2021-10-03 12:33:09,567 INFO L306 CDTParser]: Found 1 translation units. [2021-10-03 12:33:09,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more/mts.wvr.c [2021-10-03 12:33:09,568 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:33:09,568 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:33:09,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5efc7238c/de9642c4e36f46869ae5f3d9e05265ec/FLAG4b110f407 [2021-10-03 12:33:09,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5efc7238c/de9642c4e36f46869ae5f3d9e05265ec [2021-10-03 12:33:09,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-03 12:33:09,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-03 12:33:09,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-03 12:33:09,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-03 12:33:09,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-03 12:33:09,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:33:09" (1/1) ... [2021-10-03 12:33:09,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b90f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:09, skipping insertion in model container [2021-10-03 12:33:09,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:33:09" (1/1) ... [2021-10-03 12:33:09,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-03 12:33:10,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-03 12:33:10,210 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:33:10,264 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/popl20-more/mts.wvr.c[1298,1311] [2021-10-03 12:33:10,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:33:10,282 INFO L203 MainTranslator]: Completed pre-run [2021-10-03 12:33:10,294 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:33:10,307 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/popl20-more/mts.wvr.c[1298,1311] [2021-10-03 12:33:10,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:33:10,327 INFO L208 MainTranslator]: Completed translation [2021-10-03 12:33:10,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10 WrapperNode [2021-10-03 12:33:10,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-03 12:33:10,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-03 12:33:10,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-03 12:33:10,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-03 12:33:10,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-03 12:33:10,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-03 12:33:10,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-03 12:33:10,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-03 12:33:10,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-03 12:33:10,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-03 12:33:10,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-03 12:33:10,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-03 12:33:10,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (1/1) ... [2021-10-03 12:33:10,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:33:10,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:10,464 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) [2021-10-03 12:33:10,487 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 [2021-10-03 12:33:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-03 12:33:10,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-03 12:33:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-03 12:33:10,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-03 12:33:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-03 12:33:10,539 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-03 12:33:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-03 12:33:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-03 12:33:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-03 12:33:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-03 12:33:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-03 12:33:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-03 12:33:10,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-03 12:33:10,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-03 12:33:10,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-03 12:33:10,545 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-03 12:33:11,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-03 12:33:11,125 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-03 12:33:11,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:33:11 BoogieIcfgContainer [2021-10-03 12:33:11,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-03 12:33:11,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-03 12:33:11,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-03 12:33:11,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-03 12:33:11,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 12:33:09" (1/3) ... [2021-10-03 12:33:11,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6cbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:33:11, skipping insertion in model container [2021-10-03 12:33:11,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:33:10" (2/3) ... [2021-10-03 12:33:11,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6cbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:33:11, skipping insertion in model container [2021-10-03 12:33:11,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:33:11" (3/3) ... [2021-10-03 12:33:11,138 INFO L111 eAbstractionObserver]: Analyzing ICFG mts.wvr.c [2021-10-03 12:33:11,144 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-03 12:33:11,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-03 12:33:11,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-03 12:33:11,145 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-03 12:33:11,227 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,230 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,230 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,231 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,231 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,232 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,235 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,236 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,237 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,237 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,237 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,238 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,242 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,242 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,242 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,243 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,243 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,243 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,243 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,244 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,244 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,244 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,244 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,245 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,247 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,247 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,247 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,248 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,248 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,249 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,249 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,253 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,253 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,254 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,254 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,255 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,255 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,255 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,256 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,259 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,260 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,261 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,263 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,263 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,264 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,266 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,268 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,268 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,268 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,269 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,269 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,269 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,269 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,269 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,270 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,273 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,276 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,276 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,277 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,277 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,277 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,278 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,278 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,279 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,279 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,281 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,281 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,281 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,282 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,282 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,282 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,282 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,282 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,282 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,285 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,286 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,286 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,288 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,288 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,288 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,288 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,289 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,289 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,289 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,289 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,296 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,296 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,297 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,297 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,297 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,297 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,309 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,310 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,310 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,310 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,310 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,311 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,311 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,311 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,317 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:33:11,335 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-03 12:33:11,413 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-03 12:33:11,421 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 [2021-10-03 12:33:11,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-03 12:33:11,441 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-03 12:33:11,453 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 148 transitions, 320 flow [2021-10-03 12:33:11,456 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 148 transitions, 320 flow [2021-10-03 12:33:11,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 148 transitions, 320 flow [2021-10-03 12:33:11,533 INFO L129 PetriNetUnfolder]: 14/145 cut-off events. [2021-10-03 12:33:11,533 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-03 12:33:11,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 145 events. 14/145 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 152 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2021-10-03 12:33:11,545 INFO L116 LiptonReduction]: Number of co-enabled transitions 2430 [2021-10-03 12:33:16,241 INFO L131 LiptonReduction]: Checked pairs total: 4447 [2021-10-03 12:33:16,241 INFO L133 LiptonReduction]: Total number of compositions: 139 [2021-10-03 12:33:16,253 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 36 transitions, 96 flow [2021-10-03 12:33:16,297 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 323 states, 322 states have (on average 3.559006211180124) internal successors, (1146), 322 states have internal predecessors, (1146), 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) [2021-10-03 12:33:16,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 323 states, 322 states have (on average 3.559006211180124) internal successors, (1146), 322 states have internal predecessors, (1146), 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) [2021-10-03 12:33:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-03 12:33:16,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:16,320 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] [2021-10-03 12:33:16,320 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:16,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:16,325 INFO L82 PathProgramCache]: Analyzing trace with hash -328938214, now seen corresponding path program 1 times [2021-10-03 12:33:16,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:16,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325940345] [2021-10-03 12:33:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:16,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:16,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:16,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325940345] [2021-10-03 12:33:16,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325940345] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:33:16,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:33:16,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-03 12:33:16,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678398533] [2021-10-03 12:33:16,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-03 12:33:16,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-03 12:33:16,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-03 12:33:16,933 INFO L87 Difference]: Start difference. First operand has 323 states, 322 states have (on average 3.559006211180124) internal successors, (1146), 322 states have internal predecessors, (1146), 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 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-10-03 12:33:17,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:17,024 INFO L93 Difference]: Finished difference Result 405 states and 1448 transitions. [2021-10-03 12:33:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-03 12:33:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2021-10-03 12:33:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:17,047 INFO L225 Difference]: With dead ends: 405 [2021-10-03 12:33:17,048 INFO L226 Difference]: Without dead ends: 405 [2021-10-03 12:33:17,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-03 12:33:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-10-03 12:33:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-10-03 12:33:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.5841584158415842) internal successors, (1448), 404 states have internal predecessors, (1448), 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) [2021-10-03 12:33:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1448 transitions. [2021-10-03 12:33:17,150 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1448 transitions. Word has length 20 [2021-10-03 12:33:17,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:17,152 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1448 transitions. [2021-10-03 12:33:17,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-10-03 12:33:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1448 transitions. [2021-10-03 12:33:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-03 12:33:17,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:17,158 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] [2021-10-03 12:33:17,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-03 12:33:17,159 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:17,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:17,160 INFO L82 PathProgramCache]: Analyzing trace with hash -217221591, now seen corresponding path program 1 times [2021-10-03 12:33:17,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:17,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390184015] [2021-10-03 12:33:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:17,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:17,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:17,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390184015] [2021-10-03 12:33:17,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390184015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:33:17,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:33:17,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-03 12:33:17,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200109817] [2021-10-03 12:33:17,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-03 12:33:17,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-03 12:33:17,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-03 12:33:17,303 INFO L87 Difference]: Start difference. First operand 405 states and 1448 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-03 12:33:17,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:17,339 INFO L93 Difference]: Finished difference Result 406 states and 1449 transitions. [2021-10-03 12:33:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-03 12:33:17,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-10-03 12:33:17,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:17,345 INFO L225 Difference]: With dead ends: 406 [2021-10-03 12:33:17,345 INFO L226 Difference]: Without dead ends: 406 [2021-10-03 12:33:17,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-03 12:33:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-10-03 12:33:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2021-10-03 12:33:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 3.577777777777778) internal successors, (1449), 405 states have internal predecessors, (1449), 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) [2021-10-03 12:33:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1449 transitions. [2021-10-03 12:33:17,375 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1449 transitions. Word has length 21 [2021-10-03 12:33:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:17,376 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 1449 transitions. [2021-10-03 12:33:17,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-03 12:33:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1449 transitions. [2021-10-03 12:33:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-03 12:33:17,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:17,381 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] [2021-10-03 12:33:17,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-03 12:33:17,382 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:17,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:17,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1656240913, now seen corresponding path program 1 times [2021-10-03 12:33:17,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:17,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765884073] [2021-10-03 12:33:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:17,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:17,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:17,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765884073] [2021-10-03 12:33:17,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765884073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:17,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140003167] [2021-10-03 12:33:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:17,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:17,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:17,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:33:17,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-03 12:33:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:17,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-03 12:33:17,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:33:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:17,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140003167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:17,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:33:17,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-03 12:33:17,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257559278] [2021-10-03 12:33:17,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-03 12:33:17,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:17,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-03 12:33:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-03 12:33:17,749 INFO L87 Difference]: Start difference. First operand 406 states and 1449 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) 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) [2021-10-03 12:33:17,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:17,825 INFO L93 Difference]: Finished difference Result 570 states and 2103 transitions. [2021-10-03 12:33:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-03 12:33:17,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) 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 22 [2021-10-03 12:33:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:17,832 INFO L225 Difference]: With dead ends: 570 [2021-10-03 12:33:17,834 INFO L226 Difference]: Without dead ends: 570 [2021-10-03 12:33:17,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-03 12:33:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-10-03 12:33:17,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 488. [2021-10-03 12:33:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 3.731006160164271) internal successors, (1817), 487 states have internal predecessors, (1817), 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) [2021-10-03 12:33:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 1817 transitions. [2021-10-03 12:33:17,866 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 1817 transitions. Word has length 22 [2021-10-03 12:33:17,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:17,867 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 1817 transitions. [2021-10-03 12:33:17,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) 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) [2021-10-03 12:33:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 1817 transitions. [2021-10-03 12:33:17,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:33:17,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:17,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:33:17,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-03 12:33:18,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:18,088 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:18,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:18,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1279761417, now seen corresponding path program 1 times [2021-10-03 12:33:18,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:18,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181365886] [2021-10-03 12:33:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:18,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:18,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:18,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181365886] [2021-10-03 12:33:18,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181365886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:18,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603096013] [2021-10-03 12:33:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:18,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:18,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:33:18,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-03 12:33:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:18,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-03 12:33:18,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:33:18,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-03 12:33:19,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-03 12:33:19,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-03 12:33:19,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-03 12:33:19,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-03 12:33:19,805 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-03 12:33:19,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 31 [2021-10-03 12:33:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:19,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603096013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:19,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:33:19,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-03 12:33:19,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293820461] [2021-10-03 12:33:19,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-03 12:33:19,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-03 12:33:19,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-03 12:33:19,954 INFO L87 Difference]: Start difference. First operand 488 states and 1817 transitions. Second operand has 21 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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) [2021-10-03 12:33:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:22,008 INFO L93 Difference]: Finished difference Result 1854 states and 6891 transitions. [2021-10-03 12:33:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-03 12:33:22,009 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-03 12:33:22,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:22,025 INFO L225 Difference]: With dead ends: 1854 [2021-10-03 12:33:22,025 INFO L226 Difference]: Without dead ends: 1840 [2021-10-03 12:33:22,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1437.0ms TimeCoverageRelationStatistics Valid=170, Invalid=886, Unknown=0, NotChecked=0, Total=1056 [2021-10-03 12:33:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2021-10-03 12:33:22,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 662. [2021-10-03 12:33:22,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 3.83963691376702) internal successors, (2538), 661 states have internal predecessors, (2538), 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) [2021-10-03 12:33:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2538 transitions. [2021-10-03 12:33:22,069 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2538 transitions. Word has length 23 [2021-10-03 12:33:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:22,070 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 2538 transitions. [2021-10-03 12:33:22,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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) [2021-10-03 12:33:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2538 transitions. [2021-10-03 12:33:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:33:22,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:22,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:33:22,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-03 12:33:22,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:22,288 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:22,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:22,290 INFO L82 PathProgramCache]: Analyzing trace with hash 933810919, now seen corresponding path program 2 times [2021-10-03 12:33:22,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:22,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693681544] [2021-10-03 12:33:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:22,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:22,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:22,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693681544] [2021-10-03 12:33:22,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693681544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:22,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513017462] [2021-10-03 12:33:22,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-03 12:33:22,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:22,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:22,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:33:22,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-03 12:33:22,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-03 12:33:22,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-03 12:33:22,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-03 12:33:22,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:33:23,592 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-03 12:33:23,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 36 [2021-10-03 12:33:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:24,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513017462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:24,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:33:24,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2021-10-03 12:33:24,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110796383] [2021-10-03 12:33:24,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-03 12:33:24,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-03 12:33:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-10-03 12:33:24,051 INFO L87 Difference]: Start difference. First operand 662 states and 2538 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:33:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:26,311 INFO L93 Difference]: Finished difference Result 1496 states and 5567 transitions. [2021-10-03 12:33:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-03 12:33:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-03 12:33:26,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:26,327 INFO L225 Difference]: With dead ends: 1496 [2021-10-03 12:33:26,327 INFO L226 Difference]: Without dead ends: 1489 [2021-10-03 12:33:26,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1374.7ms TimeCoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2021-10-03 12:33:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-10-03 12:33:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 710. [2021-10-03 12:33:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.926657263751763) internal successors, (2784), 709 states have internal predecessors, (2784), 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) [2021-10-03 12:33:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2784 transitions. [2021-10-03 12:33:26,366 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2784 transitions. Word has length 23 [2021-10-03 12:33:26,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:26,367 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2784 transitions. [2021-10-03 12:33:26,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:33:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2784 transitions. [2021-10-03 12:33:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:33:26,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:26,371 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:33:26,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-03 12:33:26,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:26,586 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:26,587 INFO L82 PathProgramCache]: Analyzing trace with hash 204841627, now seen corresponding path program 3 times [2021-10-03 12:33:26,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:26,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897273937] [2021-10-03 12:33:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:26,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:27,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:27,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897273937] [2021-10-03 12:33:27,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897273937] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:27,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539449616] [2021-10-03 12:33:27,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-03 12:33:27,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:27,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:27,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:33:27,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-03 12:33:27,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-03 12:33:27,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-03 12:33:27,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-03 12:33:27,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:33:28,108 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-10-03 12:33:28,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2021-10-03 12:33:28,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:28,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539449616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:28,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:33:28,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2021-10-03 12:33:28,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110909215] [2021-10-03 12:33:28,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-03 12:33:28,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:28,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-03 12:33:28,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-10-03 12:33:28,205 INFO L87 Difference]: Start difference. First operand 710 states and 2784 transitions. Second operand has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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) [2021-10-03 12:33:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:29,588 INFO L93 Difference]: Finished difference Result 1267 states and 4841 transitions. [2021-10-03 12:33:29,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-03 12:33:29,588 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-03 12:33:29,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:29,602 INFO L225 Difference]: With dead ends: 1267 [2021-10-03 12:33:29,602 INFO L226 Difference]: Without dead ends: 1260 [2021-10-03 12:33:29,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 975.3ms TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2021-10-03 12:33:29,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-10-03 12:33:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 738. [2021-10-03 12:33:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 3.962008141112619) internal successors, (2920), 737 states have internal predecessors, (2920), 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) [2021-10-03 12:33:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2920 transitions. [2021-10-03 12:33:29,648 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2920 transitions. Word has length 23 [2021-10-03 12:33:29,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:29,648 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 2920 transitions. [2021-10-03 12:33:29,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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) [2021-10-03 12:33:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2920 transitions. [2021-10-03 12:33:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:33:29,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:29,652 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:33:29,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-03 12:33:29,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:29,867 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:29,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:29,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1569146403, now seen corresponding path program 4 times [2021-10-03 12:33:29,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:29,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181691422] [2021-10-03 12:33:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:29,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:30,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:30,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181691422] [2021-10-03 12:33:30,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181691422] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:30,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743612462] [2021-10-03 12:33:30,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-03 12:33:30,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:30,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:30,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:33:30,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-03 12:33:30,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-03 12:33:30,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-03 12:33:30,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-03 12:33:30,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:33:31,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-03 12:33:31,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 46 [2021-10-03 12:33:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:33:31,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743612462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:31,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:33:31,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2021-10-03 12:33:31,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189919062] [2021-10-03 12:33:31,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-03 12:33:31,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:31,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-03 12:33:31,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-10-03 12:33:31,616 INFO L87 Difference]: Start difference. First operand 738 states and 2920 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:33:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:34,351 INFO L93 Difference]: Finished difference Result 2369 states and 8675 transitions. [2021-10-03 12:33:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-03 12:33:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-03 12:33:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:34,381 INFO L225 Difference]: With dead ends: 2369 [2021-10-03 12:33:34,381 INFO L226 Difference]: Without dead ends: 2348 [2021-10-03 12:33:34,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1738.6ms TimeCoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2021-10-03 12:33:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2021-10-03 12:33:34,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 895. [2021-10-03 12:33:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 4.026845637583893) internal successors, (3600), 894 states have internal predecessors, (3600), 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) [2021-10-03 12:33:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 3600 transitions. [2021-10-03 12:33:34,435 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 3600 transitions. Word has length 23 [2021-10-03 12:33:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:34,435 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 3600 transitions. [2021-10-03 12:33:34,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:33:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 3600 transitions. [2021-10-03 12:33:34,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:33:34,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:34,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:33:34,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-03 12:33:34,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:34,654 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:34,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1299910229, now seen corresponding path program 5 times [2021-10-03 12:33:34,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:34,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175539116] [2021-10-03 12:33:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:34,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:35,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:35,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175539116] [2021-10-03 12:33:35,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175539116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:35,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909290056] [2021-10-03 12:33:35,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-03 12:33:35,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:35,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:35,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:33:35,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-03 12:33:35,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-03 12:33:35,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-03 12:33:35,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-03 12:33:35,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:33:36,150 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-10-03 12:33:36,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 33 [2021-10-03 12:33:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:33:36,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909290056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:36,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:33:36,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-03 12:33:36,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643279588] [2021-10-03 12:33:36,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-03 12:33:36,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-03 12:33:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-03 12:33:36,251 INFO L87 Difference]: Start difference. First operand 895 states and 3600 transitions. Second operand has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2021-10-03 12:33:39,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:39,080 INFO L93 Difference]: Finished difference Result 1991 states and 7664 transitions. [2021-10-03 12:33:39,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-03 12:33:39,080 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-03 12:33:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:39,103 INFO L225 Difference]: With dead ends: 1991 [2021-10-03 12:33:39,103 INFO L226 Difference]: Without dead ends: 1984 [2021-10-03 12:33:39,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1892.6ms TimeCoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2021-10-03 12:33:39,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-10-03 12:33:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 885. [2021-10-03 12:33:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 4.012443438914027) internal successors, (3547), 884 states have internal predecessors, (3547), 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) [2021-10-03 12:33:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 3547 transitions. [2021-10-03 12:33:39,165 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 3547 transitions. Word has length 23 [2021-10-03 12:33:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:39,167 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 3547 transitions. [2021-10-03 12:33:39,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2021-10-03 12:33:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 3547 transitions. [2021-10-03 12:33:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:33:39,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:39,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:33:39,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-03 12:33:39,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:39,388 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:39,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:39,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1745690213, now seen corresponding path program 6 times [2021-10-03 12:33:39,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:39,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119072014] [2021-10-03 12:33:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:39,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:40,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:40,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119072014] [2021-10-03 12:33:40,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119072014] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:40,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84358907] [2021-10-03 12:33:40,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-03 12:33:40,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:40,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:40,079 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:33:40,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-03 12:33:40,379 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-03 12:33:40,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-03 12:33:40,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-03 12:33:40,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:33:40,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-03 12:33:40,712 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-03 12:33:40,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-03 12:33:40,863 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-03 12:33:40,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 32 [2021-10-03 12:33:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:33:41,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84358907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:41,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:33:41,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2021-10-03 12:33:41,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977615992] [2021-10-03 12:33:41,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-03 12:33:41,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:41,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-03 12:33:41,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-10-03 12:33:41,249 INFO L87 Difference]: Start difference. First operand 885 states and 3547 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:33:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:43,234 INFO L93 Difference]: Finished difference Result 2712 states and 10066 transitions. [2021-10-03 12:33:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-03 12:33:43,234 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-03 12:33:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:43,257 INFO L225 Difference]: With dead ends: 2712 [2021-10-03 12:33:43,257 INFO L226 Difference]: Without dead ends: 2633 [2021-10-03 12:33:43,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1264.6ms TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2021-10-03 12:33:43,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2021-10-03 12:33:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 1155. [2021-10-03 12:33:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 3.9766031195840554) internal successors, (4589), 1154 states have internal predecessors, (4589), 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) [2021-10-03 12:33:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 4589 transitions. [2021-10-03 12:33:43,320 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 4589 transitions. Word has length 23 [2021-10-03 12:33:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:43,321 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 4589 transitions. [2021-10-03 12:33:43,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 12:33:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 4589 transitions. [2021-10-03 12:33:43,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-03 12:33:43,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:43,326 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:33:43,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-03 12:33:43,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:43,541 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:43,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:43,542 INFO L82 PathProgramCache]: Analyzing trace with hash -473592097, now seen corresponding path program 7 times [2021-10-03 12:33:43,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:43,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607423173] [2021-10-03 12:33:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:43,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:43,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:43,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607423173] [2021-10-03 12:33:43,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607423173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:43,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833509594] [2021-10-03 12:33:43,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-03 12:33:43,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:43,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:43,629 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:33:43,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-03 12:33:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:43,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-03 12:33:43,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:33:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:33:44,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833509594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:44,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:33:44,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-03 12:33:44,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818148175] [2021-10-03 12:33:44,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-03 12:33:44,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-03 12:33:44,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-03 12:33:44,085 INFO L87 Difference]: Start difference. First operand 1155 states and 4589 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-10-03 12:33:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:44,232 INFO L93 Difference]: Finished difference Result 1918 states and 7444 transitions. [2021-10-03 12:33:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-03 12:33:44,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 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 24 [2021-10-03 12:33:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:44,243 INFO L225 Difference]: With dead ends: 1918 [2021-10-03 12:33:44,243 INFO L226 Difference]: Without dead ends: 1918 [2021-10-03 12:33:44,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 98.4ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-03 12:33:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2021-10-03 12:33:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1321. [2021-10-03 12:33:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 3.8916666666666666) internal successors, (5137), 1320 states have internal predecessors, (5137), 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) [2021-10-03 12:33:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 5137 transitions. [2021-10-03 12:33:44,303 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 5137 transitions. Word has length 24 [2021-10-03 12:33:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:44,303 INFO L470 AbstractCegarLoop]: Abstraction has 1321 states and 5137 transitions. [2021-10-03 12:33:44,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-10-03 12:33:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 5137 transitions. [2021-10-03 12:33:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-03 12:33:44,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:44,309 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:33:44,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-03 12:33:44,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-03 12:33:44,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:44,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1564104726, now seen corresponding path program 8 times [2021-10-03 12:33:44,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:44,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125025104] [2021-10-03 12:33:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:44,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:33:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:33:44,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:33:44,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125025104] [2021-10-03 12:33:44,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125025104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:44,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649180663] [2021-10-03 12:33:44,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-03 12:33:44,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:33:44,611 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:33:44,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-03 12:33:44,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-03 12:33:44,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-03 12:33:44,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-03 12:33:44,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:33:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:33:45,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649180663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:33:45,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:33:45,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-03 12:33:45,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677486693] [2021-10-03 12:33:45,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-03 12:33:45,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:33:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-03 12:33:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-03 12:33:45,117 INFO L87 Difference]: Start difference. First operand 1321 states and 5137 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-10-03 12:33:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:33:45,273 INFO L93 Difference]: Finished difference Result 1743 states and 6497 transitions. [2021-10-03 12:33:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-03 12:33:45,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 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 24 [2021-10-03 12:33:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:33:45,281 INFO L225 Difference]: With dead ends: 1743 [2021-10-03 12:33:45,281 INFO L226 Difference]: Without dead ends: 1731 [2021-10-03 12:33:45,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-03 12:33:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2021-10-03 12:33:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1387. [2021-10-03 12:33:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1386 states have (on average 3.810966810966811) internal successors, (5282), 1386 states have internal predecessors, (5282), 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) [2021-10-03 12:33:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 5282 transitions. [2021-10-03 12:33:45,342 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 5282 transitions. Word has length 24 [2021-10-03 12:33:45,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:33:45,343 INFO L470 AbstractCegarLoop]: Abstraction has 1387 states and 5282 transitions. [2021-10-03 12:33:45,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-10-03 12:33:45,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 5282 transitions. [2021-10-03 12:33:45,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-03 12:33:45,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:33:45,349 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] [2021-10-03 12:33:45,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-03 12:33:45,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:33:45,567 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:33:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:33:45,567 INFO L82 PathProgramCache]: Analyzing trace with hash -955247989, now seen corresponding path program 1 times [2021-10-03 12:33:45,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:33:45,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803018324] [2021-10-03 12:33:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:33:45,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:33:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-03 12:33:45,608 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-03 12:33:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-03 12:33:45,660 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-03 12:33:45,660 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-03 12:33:45,662 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-03 12:33:45,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-03 12:33:45,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-03 12:33:45,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-03 12:33:45,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-03 12:33:45,673 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-03 12:33:45,673 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-03 12:33:45,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 12:33:45 BasicIcfg [2021-10-03 12:33:45,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-03 12:33:45,730 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-03 12:33:45,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-03 12:33:45,730 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-03 12:33:45,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:33:11" (3/4) ... [2021-10-03 12:33:45,733 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-03 12:33:45,819 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-03 12:33:45,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-03 12:33:45,821 INFO L168 Benchmark]: Toolchain (without parser) took 35882.18 ms. Allocated memory was 50.3 MB in the beginning and 226.5 MB in the end (delta: 176.2 MB). Free memory was 26.3 MB in the beginning and 80.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 124.2 MB. Max. memory is 16.1 GB. [2021-10-03 12:33:45,821 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 37.7 MB. Free memory was 18.9 MB in the beginning and 18.9 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 12:33:45,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.93 ms. Allocated memory is still 50.3 MB. Free memory was 25.9 MB in the beginning and 26.6 MB in the end (delta: -670.6 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-03 12:33:45,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.94 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 24.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-03 12:33:45,823 INFO L168 Benchmark]: Boogie Preprocessor took 46.32 ms. Allocated memory is still 50.3 MB. Free memory was 24.8 MB in the beginning and 34.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-03 12:33:45,823 INFO L168 Benchmark]: RCFGBuilder took 706.00 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 34.9 MB in the beginning and 39.4 MB in the end (delta: -4.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-03 12:33:45,824 INFO L168 Benchmark]: TraceAbstraction took 34598.94 ms. Allocated memory was 60.8 MB in the beginning and 226.5 MB in the end (delta: 165.7 MB). Free memory was 38.9 MB in the beginning and 88.3 MB in the end (delta: -49.4 MB). Peak memory consumption was 116.2 MB. Max. memory is 16.1 GB. [2021-10-03 12:33:45,824 INFO L168 Benchmark]: Witness Printer took 89.86 ms. Allocated memory is still 226.5 MB. Free memory was 88.3 MB in the beginning and 80.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-03 12:33:45,827 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 37.7 MB. Free memory was 18.9 MB in the beginning and 18.9 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.93 ms. Allocated memory is still 50.3 MB. Free memory was 25.9 MB in the beginning and 26.6 MB in the end (delta: -670.6 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.94 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 24.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.32 ms. Allocated memory is still 50.3 MB. Free memory was 24.8 MB in the beginning and 34.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 706.00 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 34.9 MB in the beginning and 39.4 MB in the end (delta: -4.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34598.94 ms. Allocated memory was 60.8 MB in the beginning and 226.5 MB in the end (delta: 165.7 MB). Free memory was 38.9 MB in the beginning and 88.3 MB in the end (delta: -49.4 MB). Peak memory consumption was 116.2 MB. Max. memory is 16.1 GB. * Witness Printer took 89.86 ms. Allocated memory is still 226.5 MB. Free memory was 88.3 MB in the beginning and 80.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4785.4ms, 144 PlacesBefore, 40 PlacesAfterwards, 148 TransitionsBefore, 36 TransitionsAfterwards, 2430 CoEnabledTransitionPairs, 6 FixpointIterations, 65 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 18 ConcurrentYvCompositions, 8 ChoiceCompositions, 139 TotalNumberOfCompositions, 4447 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3056, positive: 2929, positive conditional: 0, positive unconditional: 2929, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1736, positive: 1675, positive conditional: 0, positive unconditional: 1675, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1736, positive: 1675, positive conditional: 0, positive unconditional: 1675, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 61, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 242, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 242, negative conditional: 0, negative unconditional: 242, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3056, positive: 1254, positive conditional: 0, positive unconditional: 1254, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 1736, unknown conditional: 0, unknown unconditional: 1736] , Statistics on independence cache: Total cache size (in pairs): 203, Positive cache size: 188, Positive conditional cache size: 0, Positive unconditional cache size: 188, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - 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 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] 0 int* A; [L17] 0 int mts1, mts2, mts3, sum, M, N; [L43] 0 pthread_t t1, t2, t3; [L46] 0 M = __VERIFIER_nondet_int() [L47] 0 N = __VERIFIER_nondet_int() [L13] COND FALSE 0 !(!cond) [L67] 0 int* arr = (int*)malloc(sizeof(int) * size); [L68] 0 int i = 0; VAL [A={0:0}, M=0, mts1=0, mts2=0, mts3=0, N=1, sum=0] [L68] COND TRUE 0 i < size [L69] 0 arr[i] = __VERIFIER_nondet_int() [L68] 0 i++ VAL [A={0:0}, M=0, mts1=0, mts2=0, mts3=0, N=1, sum=0] [L68] COND FALSE 0 !(i < size) [L71] 0 return arr; [L48] 0 A = create_fresh_int_array(N) [L13] COND FALSE 0 !(!cond) [L53] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [A={3:0}, M=0, mts1=0, mts2=0, mts3=0, N=1, sum=0] [L54] FCALL, FORK 0 pthread_create(&t2, NULL, thread2, NULL) VAL [A={3:0}, M=0, mts1=0, mts2=0, mts3=0, N=1, sum=0] [L55] FCALL, FORK 0 pthread_create(&t3, NULL, thread3, NULL) VAL [A={3:0}, M=0, mts1=0, mts2=0, mts3=0, N=1, sum=0] [L34] 3 int i=M; VAL [A={3:0}, i=0, M=0, mts1=0, mts2=0, mts3=0, N=1, sum=0] [L34] COND TRUE 3 i