./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 997cd7c3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c6aa79d63d892d225c1a390dc2b1239fe052036 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-997cd7c-m [2021-09-22 14:52:38,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:52:38,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:52:38,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:52:38,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:52:38,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:52:38,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:52:38,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:52:38,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:52:38,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:52:38,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:52:38,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:52:38,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:52:38,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:52:38,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:52:38,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:52:38,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:52:38,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:52:38,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:52:38,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:52:38,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:52:38,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:52:38,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:52:38,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:52:38,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:52:38,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:52:38,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:52:38,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:52:38,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:52:38,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:52:38,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:52:38,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:52:38,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:52:38,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:52:38,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:52:38,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:52:38,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:52:38,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:52:38,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:52:38,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:52:38,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:52:38,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:52:38,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:52:38,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:52:38,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:52:38,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:52:38,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:52:38,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:52:38,613 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:52:38,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:52:38,614 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:52:38,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:52:38,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:52:38,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:52:38,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:52:38,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:52:38,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:52:38,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:52:38,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:52:38,616 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:52:38,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:52:38,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:52:38,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:52:38,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:52:38,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:52:38,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:52:38,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:52:38,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:52:38,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:52:38,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:52:38,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:52:38,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:52:38,618 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c6aa79d63d892d225c1a390dc2b1239fe052036 [2021-09-22 14:52:38,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:52:38,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:52:38,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:52:38,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:52:38,981 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:52:38,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i [2021-09-22 14:52:39,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f7faf84/9cd16c32da654372b569007409ebc62c/FLAGc4f5df980 [2021-09-22 14:52:39,465 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:52:39,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i [2021-09-22 14:52:39,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f7faf84/9cd16c32da654372b569007409ebc62c/FLAGc4f5df980 [2021-09-22 14:52:39,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f7faf84/9cd16c32da654372b569007409ebc62c [2021-09-22 14:52:39,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:52:39,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:52:39,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:52:39,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:52:39,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:52:39,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:39,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d833e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39, skipping insertion in model container [2021-09-22 14:52:39,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:39,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:52:39,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:52:39,724 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i[949,962] [2021-09-22 14:52:39,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:52:39,879 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:52:39,905 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i[949,962] [2021-09-22 14:52:39,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:52:39,989 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:52:39,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39 WrapperNode [2021-09-22 14:52:39,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:52:39,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:52:39,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:52:39,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:52:39,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:52:40,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:52:40,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:52:40,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:52:40,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:52:40,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:52:40,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:52:40,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:52:40,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (1/1) ... [2021-09-22 14:52:40,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:52:40,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:52:40,114 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) [2021-09-22 14:52:40,151 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 [2021-09-22 14:52:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:52:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-09-22 14:52:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:52:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:52:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-09-22 14:52:40,178 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-09-22 14:52:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-09-22 14:52:40,178 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-09-22 14:52:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-09-22 14:52:40,178 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-09-22 14:52:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:52:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-09-22 14:52:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:52:40,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:52:40,180 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:52:40,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:52:40,380 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-09-22 14:52:40,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:52:40 BoogieIcfgContainer [2021-09-22 14:52:40,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:52:40,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:52:40,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:52:40,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:52:40,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:52:39" (1/3) ... [2021-09-22 14:52:40,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d55206c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:52:40, skipping insertion in model container [2021-09-22 14:52:40,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:52:39" (2/3) ... [2021-09-22 14:52:40,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d55206c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:52:40, skipping insertion in model container [2021-09-22 14:52:40,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:52:40" (3/3) ... [2021-09-22 14:52:40,386 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2021-09-22 14:52:40,389 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:52:40,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:52:40,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-09-22 14:52:40,389 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:52:40,417 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,418 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,418 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,418 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,418 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,419 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,419 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,420 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,420 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,421 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,421 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,425 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,425 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:52:40,438 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-09-22 14:52:40,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:52:40,500 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 [2021-09-22 14:52:40,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-09-22 14:52:40,524 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:52:40,533 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 83 transitions, 181 flow [2021-09-22 14:52:40,537 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 83 transitions, 181 flow [2021-09-22 14:52:40,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-09-22 14:52:40,580 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-09-22 14:52:40,583 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-09-22 14:52:40,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-09-22 14:52:40,590 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-09-22 14:52:42,734 INFO L131 LiptonReduction]: Checked pairs total: 2709 [2021-09-22 14:52:42,735 INFO L133 LiptonReduction]: Total number of compositions: 74 [2021-09-22 14:52:42,740 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-09-22 14:52:42,758 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-09-22 14:52:42,764 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:42,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:42,765 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:42,769 INFO L82 PathProgramCache]: Analyzing trace with hash -202830115, now seen corresponding path program 1 times [2021-09-22 14:52:42,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:42,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823663094] [2021-09-22 14:52:42,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:42,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:42,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:42,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823663094] [2021-09-22 14:52:42,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823663094] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:42,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:42,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-09-22 14:52:42,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18064598] [2021-09-22 14:52:42,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:52:42,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:42,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:52:42,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:52:42,952 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:42,984 INFO L93 Difference]: Finished difference Result 356 states and 928 transitions. [2021-09-22 14:52:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:52:42,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-09-22 14:52:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:42,994 INFO L225 Difference]: With dead ends: 356 [2021-09-22 14:52:42,995 INFO L226 Difference]: Without dead ends: 316 [2021-09-22 14:52:42,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:52:43,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-09-22 14:52:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 278. [2021-09-22 14:52:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.6389891696750905) internal successors, (731), 277 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 731 transitions. [2021-09-22 14:52:43,034 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 731 transitions. Word has length 8 [2021-09-22 14:52:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:43,035 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 731 transitions. [2021-09-22 14:52:43,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 731 transitions. [2021-09-22 14:52:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:52:43,036 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:43,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:43,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:52:43,037 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:43,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:43,038 INFO L82 PathProgramCache]: Analyzing trace with hash 590217044, now seen corresponding path program 1 times [2021-09-22 14:52:43,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:43,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408023161] [2021-09-22 14:52:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:43,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:43,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:43,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408023161] [2021-09-22 14:52:43,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408023161] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:43,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:43,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:52:43,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654139956] [2021-09-22 14:52:43,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:52:43,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:43,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:52:43,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:52:43,221 INFO L87 Difference]: Start difference. First operand 278 states and 731 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:43,245 INFO L93 Difference]: Finished difference Result 304 states and 773 transitions. [2021-09-22 14:52:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:52:43,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-09-22 14:52:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:43,261 INFO L225 Difference]: With dead ends: 304 [2021-09-22 14:52:43,261 INFO L226 Difference]: Without dead ends: 304 [2021-09-22 14:52:43,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:52:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-09-22 14:52:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 272. [2021-09-22 14:52:43,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.6162361623616235) internal successors, (709), 271 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 709 transitions. [2021-09-22 14:52:43,281 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 709 transitions. Word has length 9 [2021-09-22 14:52:43,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:43,282 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 709 transitions. [2021-09-22 14:52:43,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 709 transitions. [2021-09-22 14:52:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:52:43,284 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:43,284 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:43,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-09-22 14:52:43,285 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:43,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1992767584, now seen corresponding path program 1 times [2021-09-22 14:52:43,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:43,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854036442] [2021-09-22 14:52:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:43,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:43,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:43,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854036442] [2021-09-22 14:52:43,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854036442] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:43,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:43,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:52:43,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457541623] [2021-09-22 14:52:43,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:52:43,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:43,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:52:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:52:43,360 INFO L87 Difference]: Start difference. First operand 272 states and 709 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:43,380 INFO L93 Difference]: Finished difference Result 290 states and 735 transitions. [2021-09-22 14:52:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:52:43,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-09-22 14:52:43,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:43,382 INFO L225 Difference]: With dead ends: 290 [2021-09-22 14:52:43,382 INFO L226 Difference]: Without dead ends: 290 [2021-09-22 14:52:43,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:52:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-09-22 14:52:43,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 256. [2021-09-22 14:52:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 2.603921568627451) internal successors, (664), 255 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 664 transitions. [2021-09-22 14:52:43,400 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 664 transitions. Word has length 9 [2021-09-22 14:52:43,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:43,400 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 664 transitions. [2021-09-22 14:52:43,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 664 transitions. [2021-09-22 14:52:43,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-09-22 14:52:43,401 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:43,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:43,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-09-22 14:52:43,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:43,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1116857865, now seen corresponding path program 1 times [2021-09-22 14:52:43,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:43,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306259881] [2021-09-22 14:52:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:43,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:43,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:43,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306259881] [2021-09-22 14:52:43,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306259881] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:43,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:43,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:52:43,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454360385] [2021-09-22 14:52:43,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:52:43,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:43,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:52:43,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:52:43,473 INFO L87 Difference]: Start difference. First operand 256 states and 664 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2021-09-22 14:52:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:43,479 INFO L93 Difference]: Finished difference Result 209 states and 481 transitions. [2021-09-22 14:52:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:52:43,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 [2021-09-22 14:52:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:43,481 INFO L225 Difference]: With dead ends: 209 [2021-09-22 14:52:43,483 INFO L226 Difference]: Without dead ends: 209 [2021-09-22 14:52:43,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:52:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-09-22 14:52:43,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-09-22 14:52:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.3125) internal successors, (481), 208 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 481 transitions. [2021-09-22 14:52:43,490 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 481 transitions. Word has length 10 [2021-09-22 14:52:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:43,490 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 481 transitions. [2021-09-22 14:52:43,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2021-09-22 14:52:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 481 transitions. [2021-09-22 14:52:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-09-22 14:52:43,497 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:43,497 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:43,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-09-22 14:52:43,497 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash 663737646, now seen corresponding path program 1 times [2021-09-22 14:52:43,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:43,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446934231] [2021-09-22 14:52:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:43,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:43,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:43,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446934231] [2021-09-22 14:52:43,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446934231] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:43,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:43,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:52:43,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924417804] [2021-09-22 14:52:43,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:52:43,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:43,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:52:43,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:52:43,557 INFO L87 Difference]: Start difference. First operand 209 states and 481 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:43,572 INFO L93 Difference]: Finished difference Result 155 states and 326 transitions. [2021-09-22 14:52:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:52:43,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-09-22 14:52:43,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:43,573 INFO L225 Difference]: With dead ends: 155 [2021-09-22 14:52:43,573 INFO L226 Difference]: Without dead ends: 151 [2021-09-22 14:52:43,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:52:43,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-09-22 14:52:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 139. [2021-09-22 14:52:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 2.072463768115942) internal successors, (286), 138 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 286 transitions. [2021-09-22 14:52:43,577 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 286 transitions. Word has length 12 [2021-09-22 14:52:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:43,577 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 286 transitions. [2021-09-22 14:52:43,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,577 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 286 transitions. [2021-09-22 14:52:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-09-22 14:52:43,578 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:43,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:43,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-09-22 14:52:43,578 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:43,578 INFO L82 PathProgramCache]: Analyzing trace with hash 55483077, now seen corresponding path program 1 times [2021-09-22 14:52:43,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:43,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161442690] [2021-09-22 14:52:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:43,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:43,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:43,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161442690] [2021-09-22 14:52:43,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161442690] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:43,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:43,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:52:43,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119830873] [2021-09-22 14:52:43,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:52:43,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:43,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:52:43,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:52:43,648 INFO L87 Difference]: Start difference. First operand 139 states and 286 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:43,675 INFO L93 Difference]: Finished difference Result 168 states and 338 transitions. [2021-09-22 14:52:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:52:43,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-09-22 14:52:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:43,678 INFO L225 Difference]: With dead ends: 168 [2021-09-22 14:52:43,678 INFO L226 Difference]: Without dead ends: 132 [2021-09-22 14:52:43,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:52:43,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-09-22 14:52:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2021-09-22 14:52:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.9313725490196079) internal successors, (197), 102 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 197 transitions. [2021-09-22 14:52:43,686 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 197 transitions. Word has length 14 [2021-09-22 14:52:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:43,686 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 197 transitions. [2021-09-22 14:52:43,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 197 transitions. [2021-09-22 14:52:43,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-09-22 14:52:43,686 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:43,686 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:43,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-09-22 14:52:43,687 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:43,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:43,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1393099782, now seen corresponding path program 1 times [2021-09-22 14:52:43,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:43,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137413097] [2021-09-22 14:52:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:43,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:43,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:43,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137413097] [2021-09-22 14:52:43,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137413097] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:43,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:43,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:52:43,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101449485] [2021-09-22 14:52:43,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:52:43,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:52:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:52:43,706 INFO L87 Difference]: Start difference. First operand 103 states and 197 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:43,713 INFO L93 Difference]: Finished difference Result 116 states and 215 transitions. [2021-09-22 14:52:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:52:43,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-09-22 14:52:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:43,714 INFO L225 Difference]: With dead ends: 116 [2021-09-22 14:52:43,714 INFO L226 Difference]: Without dead ends: 103 [2021-09-22 14:52:43,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:52:43,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-09-22 14:52:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-09-22 14:52:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.9207920792079207) internal successors, (194), 101 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 194 transitions. [2021-09-22 14:52:43,716 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 194 transitions. Word has length 14 [2021-09-22 14:52:43,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:43,716 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 194 transitions. [2021-09-22 14:52:43,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 194 transitions. [2021-09-22 14:52:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-09-22 14:52:43,717 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:52:43,717 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:52:43,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-09-22 14:52:43,717 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:52:43,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:52:43,718 INFO L82 PathProgramCache]: Analyzing trace with hash -637851054, now seen corresponding path program 2 times [2021-09-22 14:52:43,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:52:43,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025584237] [2021-09-22 14:52:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:52:43,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:52:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:52:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:52:43,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:52:43,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025584237] [2021-09-22 14:52:43,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025584237] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:52:43,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:52:43,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-09-22 14:52:43,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374310386] [2021-09-22 14:52:43,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:52:43,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:52:43,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:52:43,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:52:43,746 INFO L87 Difference]: Start difference. First operand 102 states and 194 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:52:43,756 INFO L93 Difference]: Finished difference Result 88 states and 174 transitions. [2021-09-22 14:52:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:52:43,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-09-22 14:52:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:52:43,757 INFO L225 Difference]: With dead ends: 88 [2021-09-22 14:52:43,757 INFO L226 Difference]: Without dead ends: 0 [2021-09-22 14:52:43,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:52:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-09-22 14:52:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-09-22 14:52:43,757 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) [2021-09-22 14:52:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-09-22 14:52:43,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-09-22 14:52:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:52:43,758 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-09-22 14:52:43,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:52:43,758 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-09-22 14:52:43,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-09-22 14:52:43,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:52:43,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:52:43,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-09-22 14:52:43,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-09-22 14:52:43,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-09-22 14:52:43,762 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:52:43,762 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:52:43,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:52:43 BasicIcfg [2021-09-22 14:52:43,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:52:43,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:52:43,764 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:52:43,764 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:52:43,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:52:40" (3/4) ... [2021-09-22 14:52:43,766 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-09-22 14:52:43,770 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-09-22 14:52:43,770 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-09-22 14:52:43,770 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-09-22 14:52:43,773 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-09-22 14:52:43,773 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-09-22 14:52:43,773 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:52:43,773 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:52:43,792 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:52:43,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:52:43,793 INFO L168 Benchmark]: Toolchain (without parser) took 4295.13 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 26.3 MB in the beginning and 29.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:43,793 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 33.0 MB in the beginning and 32.9 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:52:43,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.45 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.2 MB in the beginning and 34.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:43,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 60.8 MB. Free memory was 34.4 MB in the beginning and 32.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:43,794 INFO L168 Benchmark]: Boogie Preprocessor took 41.96 ms. Allocated memory is still 60.8 MB. Free memory was 32.5 MB in the beginning and 31.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:52:43,794 INFO L168 Benchmark]: RCFGBuilder took 307.33 ms. Allocated memory is still 60.8 MB. Free memory was 31.0 MB in the beginning and 31.9 MB in the end (delta: -870.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:43,794 INFO L168 Benchmark]: TraceAbstraction took 3380.87 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 32.3 MB in the end (delta: -939.4 kB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:43,794 INFO L168 Benchmark]: Witness Printer took 28.35 ms. Allocated memory is still 73.4 MB. Free memory was 32.3 MB in the beginning and 29.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-09-22 14:52:43,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 33.0 MB in the beginning and 32.9 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 490.45 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.2 MB in the beginning and 34.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 60.8 MB. Free memory was 34.4 MB in the beginning and 32.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.96 ms. Allocated memory is still 60.8 MB. Free memory was 32.5 MB in the beginning and 31.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 307.33 ms. Allocated memory is still 60.8 MB. Free memory was 31.0 MB in the beginning and 31.9 MB in the end (delta: -870.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3380.87 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 32.3 MB in the end (delta: -939.4 kB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 28.35 ms. Allocated memory is still 73.4 MB. Free memory was 32.3 MB in the beginning and 29.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2197.6ms, 91 PlacesBefore, 31 PlacesAfterwards, 83 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 2709 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1316, positive: 1223, positive conditional: 0, positive unconditional: 1223, negative: 93, negative conditional: 0, negative unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 934, positive: 900, positive conditional: 0, positive unconditional: 900, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 934, positive: 887, positive conditional: 0, positive unconditional: 887, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 93, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1316, positive: 323, positive conditional: 0, positive unconditional: 323, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 934, unknown conditional: 0, unknown unconditional: 934] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3270.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 13.5ms, AutomataDifference: 207.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2257.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 148 SDtfs, 113 SDslu, 132 SDs, 0 SdLazy, 63 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=1, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 86.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 146 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.5ms SsaConstructionTime, 125.1ms SatisfiabilityAnalysisTime, 408.9ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-09-22 14:52:43,823 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...