./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-longest-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37b183961076d6fcb23260763ff12b2e8c94306b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 22:02:26,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:02:26,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:02:26,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:02:26,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:02:26,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:02:26,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:02:26,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:02:26,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:02:26,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:02:26,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:02:26,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:02:26,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:02:26,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:02:26,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:02:26,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:02:26,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:02:26,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:02:26,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:02:26,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:02:26,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:02:26,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:02:26,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:02:26,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:02:26,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:02:26,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:02:26,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:02:26,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:02:26,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:02:26,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:02:26,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:02:26,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:02:26,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:02:26,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:02:26,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:02:26,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:02:26,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:02:26,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:02:26,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:02:26,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:02:26,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:02:26,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:02:26,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:02:26,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:02:26,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:02:26,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:02:26,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:02:26,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:02:26,573 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:02:26,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:02:26,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:02:26,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:02:26,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:02:26,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:02:26,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:02:26,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:02:26,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:02:26,576 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:02:26,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:02:26,576 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:02:26,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:02:26,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:02:26,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:02:26,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:02:26,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:02:26,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:02:26,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:02:26,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:02:26,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:02:26,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:02:26,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:02:26,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:02:26,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b183961076d6fcb23260763ff12b2e8c94306b [2021-08-29 22:02:26,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:02:26,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:02:26,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:02:26,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:02:26,930 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:02:26,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2021-08-29 22:02:27,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db7468d06/2d9be3233cec49faa0dd624f06c3a55b/FLAG599eea4d1 [2021-08-29 22:02:27,505 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:02:27,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2021-08-29 22:02:27,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db7468d06/2d9be3233cec49faa0dd624f06c3a55b/FLAG599eea4d1 [2021-08-29 22:02:27,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db7468d06/2d9be3233cec49faa0dd624f06c3a55b [2021-08-29 22:02:27,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:02:27,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:02:27,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:02:27,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:02:27,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:02:27,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:02:27" (1/1) ... [2021-08-29 22:02:27,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321de938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:27, skipping insertion in model container [2021-08-29 22:02:27,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:02:27" (1/1) ... [2021-08-29 22:02:27,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:02:28,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:02:28,379 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2021-08-29 22:02:28,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:02:28,394 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:02:28,448 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2021-08-29 22:02:28,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:02:28,492 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:02:28,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28 WrapperNode [2021-08-29 22:02:28,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:02:28,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:02:28,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:02:28,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:02:28,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:02:28,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:02:28,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:02:28,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:02:28,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:02:28,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:02:28,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:02:28,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:02:28,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (1/1) ... [2021-08-29 22:02:28,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:02:28,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:02:28,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 22:02:28,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 22:02:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-08-29 22:02:28,673 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-08-29 22:02:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-08-29 22:02:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-08-29 22:02:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:02:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:02:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:02:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:02:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:02:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:02:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:02:28,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:02:28,677 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-29 22:02:28,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:02:28,882 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 22:02:28,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:02:28 BoogieIcfgContainer [2021-08-29 22:02:28,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:02:28,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:02:28,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:02:28,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:02:28,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:02:27" (1/3) ... [2021-08-29 22:02:28,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170f607d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:02:28, skipping insertion in model container [2021-08-29 22:02:28,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:02:28" (2/3) ... [2021-08-29 22:02:28,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170f607d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:02:28, skipping insertion in model container [2021-08-29 22:02:28,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:02:28" (3/3) ... [2021-08-29 22:02:28,909 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2021-08-29 22:02:28,915 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:02:28,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:02:28,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:02:28,916 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:02:28,955 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,955 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,955 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,956 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,956 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,956 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,957 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,957 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,957 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,958 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,958 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,958 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,958 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,958 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,959 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,959 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,959 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,959 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,960 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,960 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,960 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,960 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,960 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,961 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,961 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,961 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,961 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,962 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,962 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,962 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,962 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,962 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,964 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,964 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,964 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,964 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,964 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,965 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,965 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,965 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,965 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,966 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,966 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,966 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,966 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,966 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,967 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,967 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,967 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,967 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,970 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,971 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,971 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,971 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,972 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,972 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,975 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,976 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,976 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,976 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,977 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:02:28,978 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:02:29,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:02:29,025 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 22:02:29,025 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-29 22:02:29,037 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:02:29,049 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 66 transitions, 142 flow [2021-08-29 22:02:29,052 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 66 transitions, 142 flow [2021-08-29 22:02:29,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2021-08-29 22:02:29,083 INFO L129 PetriNetUnfolder]: 5/64 cut-off events. [2021-08-29 22:02:29,084 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:02:29,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-08-29 22:02:29,090 INFO L116 LiptonReduction]: Number of co-enabled transitions 1078 [2021-08-29 22:02:31,801 INFO L131 LiptonReduction]: Checked pairs total: 1010 [2021-08-29 22:02:31,802 INFO L133 LiptonReduction]: Total number of compositions: 58 [2021-08-29 22:02:31,810 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow [2021-08-29 22:02:31,819 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 34 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:31,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 34 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 22:02:31,827 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:31,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 22:02:31,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:31,833 INFO L82 PathProgramCache]: Analyzing trace with hash -776411381, now seen corresponding path program 1 times [2021-08-29 22:02:31,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:31,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601091848] [2021-08-29 22:02:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:31,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:32,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:32,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601091848] [2021-08-29 22:02:32,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601091848] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:02:32,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:02:32,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:02:32,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550984633] [2021-08-29 22:02:32,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:02:32,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:32,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:02:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:02:32,099 INFO L87 Difference]: Start difference. First operand has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 34 states have internal predecessors, (86), 0 states have call successors, (0), 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 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:32,146 INFO L93 Difference]: Finished difference Result 44 states and 107 transitions. [2021-08-29 22:02:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:02:32,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-08-29 22:02:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:32,158 INFO L225 Difference]: With dead ends: 44 [2021-08-29 22:02:32,158 INFO L226 Difference]: Without dead ends: 38 [2021-08-29 22:02:32,160 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:02:32,166 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.53ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.84ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:32,168 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 22 Unknown, 0 Unchecked, 1.53ms Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 18.84ms Time] [2021-08-29 22:02:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-29 22:02:32,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-08-29 22:02:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 37 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 92 transitions. [2021-08-29 22:02:32,205 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 92 transitions. Word has length 6 [2021-08-29 22:02:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:32,206 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 92 transitions. [2021-08-29 22:02:32,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 92 transitions. [2021-08-29 22:02:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 22:02:32,214 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:32,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:32,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:02:32,215 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:32,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:32,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1192430633, now seen corresponding path program 1 times [2021-08-29 22:02:32,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:32,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965844792] [2021-08-29 22:02:32,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:32,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:32,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:32,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965844792] [2021-08-29 22:02:32,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965844792] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:02:32,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:02:32,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:02:32,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463498063] [2021-08-29 22:02:32,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:02:32,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:32,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:02:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:02:32,358 INFO L87 Difference]: Start difference. First operand 38 states and 92 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:32,419 INFO L93 Difference]: Finished difference Result 64 states and 150 transitions. [2021-08-29 22:02:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:02:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 22:02:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:32,422 INFO L225 Difference]: With dead ends: 64 [2021-08-29 22:02:32,422 INFO L226 Difference]: Without dead ends: 50 [2021-08-29 22:02:32,423 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.76ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:02:32,424 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.97ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.39ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:32,424 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 31 Invalid, 32 Unknown, 0 Unchecked, 1.97ms Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 22.39ms Time] [2021-08-29 22:02:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-29 22:02:32,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2021-08-29 22:02:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 41 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2021-08-29 22:02:32,439 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2021-08-29 22:02:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:32,440 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2021-08-29 22:02:32,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2021-08-29 22:02:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:02:32,442 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:32,443 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:32,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:02:32,444 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:32,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:32,445 INFO L82 PathProgramCache]: Analyzing trace with hash -830913789, now seen corresponding path program 1 times [2021-08-29 22:02:32,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:32,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821751533] [2021-08-29 22:02:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:32,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:32,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:32,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821751533] [2021-08-29 22:02:32,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821751533] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:02:32,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:02:32,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:02:32,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773186311] [2021-08-29 22:02:32,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:02:32,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:32,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:02:32,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:02:32,538 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:32,647 INFO L93 Difference]: Finished difference Result 58 states and 136 transitions. [2021-08-29 22:02:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 22:02:32,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 22:02:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:32,652 INFO L225 Difference]: With dead ends: 58 [2021-08-29 22:02:32,652 INFO L226 Difference]: Without dead ends: 52 [2021-08-29 22:02:32,653 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 63.74ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-29 22:02:32,656 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.57ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:32,658 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 46 Invalid, 61 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 46.57ms Time] [2021-08-29 22:02:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-29 22:02:32,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2021-08-29 22:02:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 37 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 90 transitions. [2021-08-29 22:02:32,676 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 90 transitions. Word has length 10 [2021-08-29 22:02:32,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:32,676 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 90 transitions. [2021-08-29 22:02:32,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 90 transitions. [2021-08-29 22:02:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:02:32,678 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:32,679 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:32,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:02:32,680 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:32,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:32,684 INFO L82 PathProgramCache]: Analyzing trace with hash -855995889, now seen corresponding path program 2 times [2021-08-29 22:02:32,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:32,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703008583] [2021-08-29 22:02:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:32,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:32,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:32,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703008583] [2021-08-29 22:02:32,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703008583] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:02:32,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:02:32,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:02:32,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451113672] [2021-08-29 22:02:32,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:02:32,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:32,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:02:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:02:32,795 INFO L87 Difference]: Start difference. First operand 38 states and 90 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:32,868 INFO L93 Difference]: Finished difference Result 60 states and 142 transitions. [2021-08-29 22:02:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:02:32,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 22:02:32,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:32,869 INFO L225 Difference]: With dead ends: 60 [2021-08-29 22:02:32,869 INFO L226 Difference]: Without dead ends: 47 [2021-08-29 22:02:32,869 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.24ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-29 22:02:32,870 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.65ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:32,871 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 42 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 29.65ms Time] [2021-08-29 22:02:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-29 22:02:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2021-08-29 22:02:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 97 transitions. [2021-08-29 22:02:32,884 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 97 transitions. Word has length 10 [2021-08-29 22:02:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:32,884 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 97 transitions. [2021-08-29 22:02:32,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 97 transitions. [2021-08-29 22:02:32,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:02:32,884 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:32,885 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:32,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:02:32,885 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:32,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:32,885 INFO L82 PathProgramCache]: Analyzing trace with hash 11487317, now seen corresponding path program 3 times [2021-08-29 22:02:32,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:32,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238225906] [2021-08-29 22:02:32,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:32,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:32,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:32,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238225906] [2021-08-29 22:02:32,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238225906] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:02:32,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139568523] [2021-08-29 22:02:32,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 22:02:32,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:32,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:02:32,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 22:02:32,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 22:02:33,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-29 22:02:33,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 22:02:33,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 22:02:33,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:02:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:33,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 22:02:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:33,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139568523] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 22:02:33,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 22:02:33,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-08-29 22:02:33,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91395101] [2021-08-29 22:02:33,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-29 22:02:33,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:33,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-29 22:02:33,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-29 22:02:33,373 INFO L87 Difference]: Start difference. First operand 40 states and 97 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:33,657 INFO L93 Difference]: Finished difference Result 85 states and 203 transitions. [2021-08-29 22:02:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-29 22:02:33,657 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 22:02:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:33,659 INFO L225 Difference]: With dead ends: 85 [2021-08-29 22:02:33,660 INFO L226 Difference]: Without dead ends: 55 [2021-08-29 22:02:33,660 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 246.64ms TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2021-08-29 22:02:33,661 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.28ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:33,661 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 86 Invalid, 123 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [34 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 69.28ms Time] [2021-08-29 22:02:33,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-29 22:02:33,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2021-08-29 22:02:33,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.425531914893617) internal successors, (114), 47 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 114 transitions. [2021-08-29 22:02:33,675 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 114 transitions. Word has length 11 [2021-08-29 22:02:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:33,676 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 114 transitions. [2021-08-29 22:02:33,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 114 transitions. [2021-08-29 22:02:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:02:33,679 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:33,679 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:33,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 22:02:33,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:33,905 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:33,905 INFO L82 PathProgramCache]: Analyzing trace with hash -766059705, now seen corresponding path program 4 times [2021-08-29 22:02:33,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:33,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657883402] [2021-08-29 22:02:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:33,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:33,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:33,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657883402] [2021-08-29 22:02:33,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657883402] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:02:33,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100540928] [2021-08-29 22:02:33,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-29 22:02:33,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:33,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:02:33,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 22:02:34,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 22:02:34,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-29 22:02:34,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 22:02:34,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 22:02:34,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:02:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:34,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 22:02:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:34,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100540928] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 22:02:34,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 22:02:34,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-08-29 22:02:34,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815492563] [2021-08-29 22:02:34,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-29 22:02:34,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:34,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-29 22:02:34,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-29 22:02:34,262 INFO L87 Difference]: Start difference. First operand 48 states and 114 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:34,439 INFO L93 Difference]: Finished difference Result 105 states and 253 transitions. [2021-08-29 22:02:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-29 22:02:34,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 22:02:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:34,441 INFO L225 Difference]: With dead ends: 105 [2021-08-29 22:02:34,441 INFO L226 Difference]: Without dead ends: 80 [2021-08-29 22:02:34,442 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 154.51ms TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-08-29 22:02:34,443 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 101 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.26ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:34,444 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 44 Invalid, 94 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [44 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 52.26ms Time] [2021-08-29 22:02:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-29 22:02:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-08-29 22:02:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.4915254237288136) internal successors, (147), 59 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 147 transitions. [2021-08-29 22:02:34,459 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 147 transitions. Word has length 11 [2021-08-29 22:02:34,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:34,459 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 147 transitions. [2021-08-29 22:02:34,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 147 transitions. [2021-08-29 22:02:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:02:34,461 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:34,461 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:34,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 22:02:34,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-29 22:02:34,681 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:34,681 INFO L82 PathProgramCache]: Analyzing trace with hash -578292471, now seen corresponding path program 5 times [2021-08-29 22:02:34,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:34,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391765751] [2021-08-29 22:02:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:34,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 22:02:34,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:34,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391765751] [2021-08-29 22:02:34,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391765751] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:02:34,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691540551] [2021-08-29 22:02:34,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-29 22:02:34,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:34,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:02:34,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 22:02:34,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 22:02:34,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-08-29 22:02:34,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 22:02:34,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 22:02:34,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:02:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 22:02:34,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 22:02:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 22:02:35,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691540551] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 22:02:35,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 22:02:35,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2021-08-29 22:02:35,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732636408] [2021-08-29 22:02:35,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-29 22:02:35,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:35,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-29 22:02:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-08-29 22:02:35,057 INFO L87 Difference]: Start difference. First operand 60 states and 147 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:35,563 INFO L93 Difference]: Finished difference Result 144 states and 350 transitions. [2021-08-29 22:02:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-29 22:02:35,564 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 22:02:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:35,565 INFO L225 Difference]: With dead ends: 144 [2021-08-29 22:02:35,565 INFO L226 Difference]: Without dead ends: 90 [2021-08-29 22:02:35,565 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 453.91ms TimeCoverageRelationStatistics Valid=605, Invalid=1287, Unknown=0, NotChecked=0, Total=1892 [2021-08-29 22:02:35,566 INFO L928 BasicCegarLoop]: 17 mSDtfsCounter, 149 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.85ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.16ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:35,566 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 98 Invalid, 206 Unknown, 0 Unchecked, 2.85ms Time], IncrementalHoareTripleChecker [94 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 122.16ms Time] [2021-08-29 22:02:35,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-08-29 22:02:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 53. [2021-08-29 22:02:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 2.4615384615384617) internal successors, (128), 52 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 128 transitions. [2021-08-29 22:02:35,570 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 128 transitions. Word has length 15 [2021-08-29 22:02:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:35,571 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 128 transitions. [2021-08-29 22:02:35,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:35,571 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 128 transitions. [2021-08-29 22:02:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 22:02:35,572 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:35,572 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:35,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 22:02:35,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:35,795 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:35,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:35,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1789262407, now seen corresponding path program 6 times [2021-08-29 22:02:35,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:35,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842076997] [2021-08-29 22:02:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:35,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:35,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:35,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842076997] [2021-08-29 22:02:35,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842076997] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:02:35,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955890789] [2021-08-29 22:02:35,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-29 22:02:35,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:35,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:02:35,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 22:02:35,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 22:02:36,031 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-08-29 22:02:36,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 22:02:36,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-29 22:02:36,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:02:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:36,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 22:02:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:36,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955890789] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 22:02:36,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 22:02:36,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2021-08-29 22:02:36,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702056535] [2021-08-29 22:02:36,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-29 22:02:36,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-29 22:02:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-08-29 22:02:36,396 INFO L87 Difference]: Start difference. First operand 53 states and 128 transitions. Second operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:37,443 INFO L93 Difference]: Finished difference Result 188 states and 463 transitions. [2021-08-29 22:02:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-29 22:02:37,443 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 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 [2021-08-29 22:02:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:37,444 INFO L225 Difference]: With dead ends: 188 [2021-08-29 22:02:37,444 INFO L226 Difference]: Without dead ends: 108 [2021-08-29 22:02:37,446 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 1018.08ms TimeCoverageRelationStatistics Valid=1951, Invalid=4211, Unknown=0, NotChecked=0, Total=6162 [2021-08-29 22:02:37,447 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 413 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 206.69ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:37,447 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 122 Invalid, 397 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [238 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 206.69ms Time] [2021-08-29 22:02:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-08-29 22:02:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 82. [2021-08-29 22:02:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.4814814814814814) internal successors, (201), 81 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 201 transitions. [2021-08-29 22:02:37,451 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 201 transitions. Word has length 20 [2021-08-29 22:02:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:37,452 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 201 transitions. [2021-08-29 22:02:37,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 201 transitions. [2021-08-29 22:02:37,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-29 22:02:37,453 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:37,453 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:37,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 22:02:37,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:37,654 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash 283610275, now seen corresponding path program 7 times [2021-08-29 22:02:37,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:37,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814498957] [2021-08-29 22:02:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:37,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:37,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:37,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814498957] [2021-08-29 22:02:37,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814498957] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:02:37,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773681112] [2021-08-29 22:02:37,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-29 22:02:37,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:37,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:02:37,923 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 22:02:37,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 22:02:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:37,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-29 22:02:37,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:02:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:38,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 22:02:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:38,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773681112] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 22:02:38,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 22:02:38,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 44 [2021-08-29 22:02:38,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808415624] [2021-08-29 22:02:38,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-08-29 22:02:38,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-08-29 22:02:38,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=1571, Unknown=0, NotChecked=0, Total=2070 [2021-08-29 22:02:38,586 INFO L87 Difference]: Start difference. First operand 82 states and 201 transitions. Second operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:40,749 INFO L93 Difference]: Finished difference Result 282 states and 699 transitions. [2021-08-29 22:02:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-08-29 22:02:40,749 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2021-08-29 22:02:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:40,750 INFO L225 Difference]: With dead ends: 282 [2021-08-29 22:02:40,751 INFO L226 Difference]: Without dead ends: 163 [2021-08-29 22:02:40,754 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5218 ImplicationChecksByTransitivity, 2222.67ms TimeCoverageRelationStatistics Valid=4946, Invalid=11056, Unknown=0, NotChecked=0, Total=16002 [2021-08-29 22:02:40,755 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 563 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 263.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.59ms SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 342.70ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:40,756 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 164 Invalid, 638 Unknown, 0 Unchecked, 6.59ms Time], IncrementalHoareTripleChecker [376 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 342.70ms Time] [2021-08-29 22:02:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-08-29 22:02:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 109. [2021-08-29 22:02:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.4814814814814814) internal successors, (268), 108 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 268 transitions. [2021-08-29 22:02:40,761 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 268 transitions. Word has length 30 [2021-08-29 22:02:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:40,761 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 268 transitions. [2021-08-29 22:02:40,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:40,762 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 268 transitions. [2021-08-29 22:02:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-29 22:02:40,763 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:40,763 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:40,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 22:02:40,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:40,975 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:40,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:40,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1507679075, now seen corresponding path program 8 times [2021-08-29 22:02:40,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:40,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463570003] [2021-08-29 22:02:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:40,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:41,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:41,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463570003] [2021-08-29 22:02:41,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463570003] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:02:41,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362509754] [2021-08-29 22:02:41,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 22:02:41,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:41,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:02:41,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 22:02:41,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 22:02:41,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 22:02:41,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 22:02:41,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 46 conjunts are in the unsatisfiable core [2021-08-29 22:02:41,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:02:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:41,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 22:02:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:42,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362509754] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 22:02:42,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 22:02:42,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 85 [2021-08-29 22:02:42,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875046442] [2021-08-29 22:02:42,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-08-29 22:02:42,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:42,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-08-29 22:02:42,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1745, Invalid=5737, Unknown=0, NotChecked=0, Total=7482 [2021-08-29 22:02:42,928 INFO L87 Difference]: Start difference. First operand 109 states and 268 transitions. Second operand has 87 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 86 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:45,440 INFO L93 Difference]: Finished difference Result 220 states and 543 transitions. [2021-08-29 22:02:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-08-29 22:02:45,440 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 86 states have internal predecessors, (98), 0 states have call successors, (0), 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 48 [2021-08-29 22:02:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:45,442 INFO L225 Difference]: With dead ends: 220 [2021-08-29 22:02:45,442 INFO L226 Difference]: Without dead ends: 202 [2021-08-29 22:02:45,447 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9634 ImplicationChecksByTransitivity, 3205.03ms TimeCoverageRelationStatistics Valid=8509, Invalid=20903, Unknown=0, NotChecked=0, Total=29412 [2021-08-29 22:02:45,448 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 491 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 298.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.05ms SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 366.51ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:45,448 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 94 Invalid, 802 Unknown, 0 Unchecked, 6.05ms Time], IncrementalHoareTripleChecker [462 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 366.51ms Time] [2021-08-29 22:02:45,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-08-29 22:02:45,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 157. [2021-08-29 22:02:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.621794871794872) internal successors, (409), 156 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 409 transitions. [2021-08-29 22:02:45,454 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 409 transitions. Word has length 48 [2021-08-29 22:02:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:45,455 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 409 transitions. [2021-08-29 22:02:45,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 86 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:45,455 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 409 transitions. [2021-08-29 22:02:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-29 22:02:45,456 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:02:45,457 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:02:45,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 22:02:45,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:45,669 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:02:45,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:02:45,670 INFO L82 PathProgramCache]: Analyzing trace with hash -749737503, now seen corresponding path program 9 times [2021-08-29 22:02:45,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:02:45,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430182194] [2021-08-29 22:02:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:02:45,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:02:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:02:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:45,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:02:45,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430182194] [2021-08-29 22:02:45,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430182194] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 22:02:45,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145001449] [2021-08-29 22:02:45,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 22:02:45,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:45,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:02:45,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 22:02:45,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-29 22:02:46,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-08-29 22:02:46,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 22:02:46,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-29 22:02:46,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 22:02:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:02:46,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 22:02:46,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145001449] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:02:46,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 22:02:46,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2021-08-29 22:02:46,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133462898] [2021-08-29 22:02:46,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-29 22:02:46,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:02:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-29 22:02:46,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2021-08-29 22:02:46,169 INFO L87 Difference]: Start difference. First operand 157 states and 409 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:02:46,252 INFO L93 Difference]: Finished difference Result 1357 states and 3453 transitions. [2021-08-29 22:02:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-29 22:02:46,252 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-08-29 22:02:46,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:02:46,253 INFO L225 Difference]: With dead ends: 1357 [2021-08-29 22:02:46,253 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:02:46,253 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 173.49ms TimeCoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2021-08-29 22:02:46,254 INFO L928 BasicCegarLoop]: 91 mSDtfsCounter, 90 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.56ms IncrementalHoareTripleChecker+Time [2021-08-29 22:02:46,254 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 271 Invalid, 132 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 58.56ms Time] [2021-08-29 22:02:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:02:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:02:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:02:46,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-08-29 22:02:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:02:46,256 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:02:46,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:02:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:02:46,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:02:46,258 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-08-29 22:02:46,259 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-08-29 22:02:46,259 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-08-29 22:02:46,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-29 22:02:46,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 22:02:46,484 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:02:46,484 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:02:46,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:02:46 BasicIcfg [2021-08-29 22:02:46,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:02:46,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:02:46,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:02:46,487 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:02:46,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:02:28" (3/4) ... [2021-08-29 22:02:46,489 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:02:46,494 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2021-08-29 22:02:46,494 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2021-08-29 22:02:46,499 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-29 22:02:46,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:02:46,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-29 22:02:46,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:02:46,523 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:02:46,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:02:46,523 INFO L158 Benchmark]: Toolchain (without parser) took 18557.99ms. Allocated memory was 56.6MB in the beginning and 146.8MB in the end (delta: 90.2MB). Free memory was 39.7MB in the beginning and 86.4MB in the end (delta: -46.7MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2021-08-29 22:02:46,524 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 46.1MB. Free memory was 28.2MB in the beginning and 28.2MB in the end (delta: 33.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:02:46,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.41ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 30.9MB in the end (delta: 8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 22:02:46,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.46ms. Allocated memory is still 56.6MB. Free memory was 30.9MB in the beginning and 29.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:02:46,524 INFO L158 Benchmark]: Boogie Preprocessor took 31.06ms. Allocated memory is still 56.6MB. Free memory was 29.1MB in the beginning and 27.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:02:46,524 INFO L158 Benchmark]: RCFGBuilder took 291.23ms. Allocated memory is still 56.6MB. Free memory was 27.7MB in the beginning and 31.7MB in the end (delta: -4.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-08-29 22:02:46,525 INFO L158 Benchmark]: TraceAbstraction took 17599.76ms. Allocated memory was 56.6MB in the beginning and 146.8MB in the end (delta: 90.2MB). Free memory was 31.3MB in the beginning and 88.5MB in the end (delta: -57.2MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2021-08-29 22:02:46,525 INFO L158 Benchmark]: Witness Printer took 36.48ms. Allocated memory is still 146.8MB. Free memory was 88.5MB in the beginning and 86.4MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 22:02:46,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 46.1MB. Free memory was 28.2MB in the beginning and 28.2MB in the end (delta: 33.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.41ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 30.9MB in the end (delta: 8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.46ms. Allocated memory is still 56.6MB. Free memory was 30.9MB in the beginning and 29.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.06ms. Allocated memory is still 56.6MB. Free memory was 29.1MB in the beginning and 27.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.23ms. Allocated memory is still 56.6MB. Free memory was 27.7MB in the beginning and 31.7MB in the end (delta: -4.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * TraceAbstraction took 17599.76ms. Allocated memory was 56.6MB in the beginning and 146.8MB in the end (delta: 90.2MB). Free memory was 31.3MB in the beginning and 88.5MB in the end (delta: -57.2MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Witness Printer took 36.48ms. Allocated memory is still 146.8MB. Free memory was 88.5MB in the beginning and 86.4MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2749.98ms, 68 PlacesBefore, 20 PlacesAfterwards, 66 TransitionsBefore, 15 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 58 TotalNumberOfCompositions, 1010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 867, positive: 842, positive conditional: 0, positive unconditional: 842, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 710, positive: 695, positive conditional: 0, positive unconditional: 695, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 710, positive: 695, positive conditional: 0, positive unconditional: 695, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 40, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 867, positive: 147, positive conditional: 0, positive unconditional: 147, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 710, unknown conditional: 0, unknown unconditional: 710] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 17467.48ms, OverallIterations: 11, TraceHistogramMax: 21, EmptinessCheckTime: 18.65ms, AutomataDifference: 7189.66ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2794.20ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1974 SdHoareTripleChecker+Valid, 1335.62ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1974 mSDsluCounter, 1008 SdHoareTripleChecker+Invalid, 1074.80ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 878 mSDsCounter, 1272 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1277 IncrementalHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1272 mSolverCounterUnsat, 225 mSDtfsCounter, 1277 mSolverCounterSat, 38.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 719 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 507 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17624 ImplicationChecksByTransitivity, 7634.15ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=10, InterpolantAutomatonStates: 335, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 109.42ms AutomataMinimizationTime, 11 MinimizatonAttempts, 218 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 97.09ms SsaConstructionTime, 425.53ms SatisfiabilityAnalysisTime, 4767.22ms InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 513 ConstructedInterpolants, 0 QuantifiedInterpolants, 1711 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1298 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 783/2393 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-29 22:02:46,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...