./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin000_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/thin000_pso.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 02f90981fedfb6782d9165385acb8cfadc06132f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 14:42:43,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 14:42:43,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 14:42:43,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 14:42:43,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 14:42:43,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 14:42:43,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 14:42:43,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 14:42:43,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 14:42:43,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 14:42:43,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 14:42:43,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 14:42:43,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 14:42:43,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 14:42:43,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 14:42:43,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 14:42:43,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 14:42:43,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 14:42:43,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 14:42:43,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 14:42:43,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 14:42:43,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 14:42:43,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 14:42:43,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 14:42:43,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 14:42:43,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 14:42:43,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 14:42:43,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 14:42:43,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 14:42:43,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 14:42:43,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 14:42:43,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 14:42:43,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 14:42:43,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 14:42:43,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 14:42:43,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 14:42:43,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 14:42:43,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 14:42:43,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 14:42:43,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 14:42:43,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 14:42:43,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 14:42:43,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 14:42:43,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 14:42:43,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 14:42:43,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 14:42:43,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 14:42:43,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 14:42:43,275 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 14:42:43,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 14:42:43,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 14:42:43,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 14:42:43,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 14:42:43,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 14:42:43,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 14:42:43,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 14:42:43,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 14:42:43,278 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 14:42:43,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 14:42:43,278 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 14:42:43,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 14:42:43,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 14:42:43,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 14:42:43,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 14:42:43,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:42:43,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 14:42:43,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 14:42:43,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 14:42:43,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 14:42:43,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 14:42:43,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 14:42:43,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 14:42:43,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f90981fedfb6782d9165385acb8cfadc06132f [2021-08-26 14:42:43,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 14:42:43,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 14:42:43,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 14:42:43,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 14:42:43,586 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 14:42:43,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin000_pso.opt.i [2021-08-26 14:42:43,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7a828a2/39536c4e6f7d45b98ae9ef30d43f66d9/FLAGb216b367f [2021-08-26 14:42:44,194 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 14:42:44,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin000_pso.opt.i [2021-08-26 14:42:44,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7a828a2/39536c4e6f7d45b98ae9ef30d43f66d9/FLAGb216b367f [2021-08-26 14:42:44,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7a828a2/39536c4e6f7d45b98ae9ef30d43f66d9 [2021-08-26 14:42:44,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 14:42:44,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 14:42:44,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 14:42:44,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 14:42:44,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 14:42:44,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:42:44" (1/1) ... [2021-08-26 14:42:44,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36773f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:44, skipping insertion in model container [2021-08-26 14:42:44,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:42:44" (1/1) ... [2021-08-26 14:42:44,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 14:42:44,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 14:42:44,861 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/thin000_pso.opt.i[949,962] [2021-08-26 14:42:45,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:42:45,066 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 14:42:45,078 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/thin000_pso.opt.i[949,962] [2021-08-26 14:42:45,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:42:45,152 INFO L208 MainTranslator]: Completed translation [2021-08-26 14:42:45,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45 WrapperNode [2021-08-26 14:42:45,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 14:42:45,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 14:42:45,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 14:42:45,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 14:42:45,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 14:42:45,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 14:42:45,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 14:42:45,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 14:42:45,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 14:42:45,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 14:42:45,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 14:42:45,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 14:42:45,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (1/1) ... [2021-08-26 14:42:45,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:42:45,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:42:45,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 14:42:45,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 14:42:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 14:42:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-26 14:42:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 14:42:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 14:42:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-26 14:42:45,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-26 14:42:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-26 14:42:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-26 14:42:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 14:42:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-26 14:42:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 14:42:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 14:42:45,337 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-26 14:42:45,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 14:42:45,762 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-26 14:42:45,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:42:45 BoogieIcfgContainer [2021-08-26 14:42:45,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 14:42:45,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 14:42:45,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 14:42:45,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 14:42:45,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:42:44" (1/3) ... [2021-08-26 14:42:45,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2d030e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:42:45, skipping insertion in model container [2021-08-26 14:42:45,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:45" (2/3) ... [2021-08-26 14:42:45,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2d030e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:42:45, skipping insertion in model container [2021-08-26 14:42:45,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:42:45" (3/3) ... [2021-08-26 14:42:45,771 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.opt.i [2021-08-26 14:42:45,776 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-26 14:42:45,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 14:42:45,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 14:42:45,777 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-26 14:42:45,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,808 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,808 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,809 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,809 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,812 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,812 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,824 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,825 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:45,829 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-26 14:42:45,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 14:42:45,878 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 14:42:45,878 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-26 14:42:45,889 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-26 14:42:45,899 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 67 transitions, 144 flow [2021-08-26 14:42:45,901 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 67 transitions, 144 flow [2021-08-26 14:42:45,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-08-26 14:42:45,930 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-08-26 14:42:45,930 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-26 14:42:45,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-08-26 14:42:45,934 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-08-26 14:42:48,890 INFO L131 LiptonReduction]: Checked pairs total: 1496 [2021-08-26 14:42:48,891 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-08-26 14:42:48,899 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2021-08-26 14:42:48,910 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:48,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 14:42:48,917 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:48,917 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 14:42:48,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:42:48,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:48,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1311866131, now seen corresponding path program 1 times [2021-08-26 14:42:48,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:48,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286460290] [2021-08-26 14:42:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:48,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:49,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:49,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286460290] [2021-08-26 14:42:49,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286460290] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:49,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:49,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-26 14:42:49,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370792759] [2021-08-26 14:42:49,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:42:49,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:49,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:42:49,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:42:49,159 INFO L87 Difference]: Start difference. First operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:49,186 INFO L93 Difference]: Finished difference Result 57 states and 117 transitions. [2021-08-26 14:42:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:42:49,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-26 14:42:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:49,195 INFO L225 Difference]: With dead ends: 57 [2021-08-26 14:42:49,196 INFO L226 Difference]: Without dead ends: 57 [2021-08-26 14:42:49,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:42:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-26 14:42:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-08-26 14:42:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 117 transitions. [2021-08-26 14:42:49,238 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 117 transitions. Word has length 6 [2021-08-26 14:42:49,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:49,238 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 117 transitions. [2021-08-26 14:42:49,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 117 transitions. [2021-08-26 14:42:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 14:42:49,241 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:49,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:49,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 14:42:49,243 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:42:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:49,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2031139743, now seen corresponding path program 1 times [2021-08-26 14:42:49,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:49,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401902800] [2021-08-26 14:42:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:49,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:49,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:49,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401902800] [2021-08-26 14:42:49,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401902800] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:49,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:49,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:42:49,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666094674] [2021-08-26 14:42:49,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:42:49,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:49,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:42:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:49,337 INFO L87 Difference]: Start difference. First operand 57 states and 117 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:49,374 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2021-08-26 14:42:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:42:49,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-08-26 14:42:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:49,376 INFO L225 Difference]: With dead ends: 81 [2021-08-26 14:42:49,377 INFO L226 Difference]: Without dead ends: 63 [2021-08-26 14:42:49,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:49,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-08-26 14:42:49,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2021-08-26 14:42:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.018867924528302) internal successors, (107), 53 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 107 transitions. [2021-08-26 14:42:49,383 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 107 transitions. Word has length 7 [2021-08-26 14:42:49,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:49,383 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 107 transitions. [2021-08-26 14:42:49,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,383 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 107 transitions. [2021-08-26 14:42:49,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 14:42:49,384 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:49,384 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:49,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 14:42:49,384 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:42:49,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:49,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2013166160, now seen corresponding path program 1 times [2021-08-26 14:42:49,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:49,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016315900] [2021-08-26 14:42:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:49,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:49,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:49,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016315900] [2021-08-26 14:42:49,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016315900] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:49,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:49,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:42:49,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907660704] [2021-08-26 14:42:49,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:42:49,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:49,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:42:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:49,480 INFO L87 Difference]: Start difference. First operand 54 states and 107 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:49,501 INFO L93 Difference]: Finished difference Result 51 states and 99 transitions. [2021-08-26 14:42:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:42:49,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-08-26 14:42:49,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:49,505 INFO L225 Difference]: With dead ends: 51 [2021-08-26 14:42:49,505 INFO L226 Difference]: Without dead ends: 51 [2021-08-26 14:42:49,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:49,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-08-26 14:42:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-08-26 14:42:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.98) internal successors, (99), 50 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 99 transitions. [2021-08-26 14:42:49,516 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 99 transitions. Word has length 7 [2021-08-26 14:42:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:49,516 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 99 transitions. [2021-08-26 14:42:49,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 99 transitions. [2021-08-26 14:42:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 14:42:49,517 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:49,517 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:49,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 14:42:49,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:42:49,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:49,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1459155644, now seen corresponding path program 1 times [2021-08-26 14:42:49,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:49,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075555049] [2021-08-26 14:42:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:49,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:49,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:49,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075555049] [2021-08-26 14:42:49,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075555049] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:49,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:49,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:42:49,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408742752] [2021-08-26 14:42:49,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:42:49,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:49,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:42:49,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:49,612 INFO L87 Difference]: Start difference. First operand 51 states and 99 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:49,645 INFO L93 Difference]: Finished difference Result 66 states and 124 transitions. [2021-08-26 14:42:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:42:49,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-26 14:42:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:49,646 INFO L225 Difference]: With dead ends: 66 [2021-08-26 14:42:49,646 INFO L226 Difference]: Without dead ends: 48 [2021-08-26 14:42:49,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-26 14:42:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-08-26 14:42:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 47 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2021-08-26 14:42:49,656 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 8 [2021-08-26 14:42:49,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:49,656 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2021-08-26 14:42:49,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2021-08-26 14:42:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 14:42:49,658 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:49,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:49,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 14:42:49,658 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:42:49,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:49,662 INFO L82 PathProgramCache]: Analyzing trace with hash 581783128, now seen corresponding path program 1 times [2021-08-26 14:42:49,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:49,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259350272] [2021-08-26 14:42:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:49,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:49,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:49,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259350272] [2021-08-26 14:42:49,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259350272] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:49,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:49,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:42:49,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755769681] [2021-08-26 14:42:49,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 14:42:49,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 14:42:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:49,748 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:49,772 INFO L93 Difference]: Finished difference Result 54 states and 96 transitions. [2021-08-26 14:42:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:42:49,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 14:42:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:49,773 INFO L225 Difference]: With dead ends: 54 [2021-08-26 14:42:49,773 INFO L226 Difference]: Without dead ends: 30 [2021-08-26 14:42:49,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:42:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-26 14:42:49,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-26 14:42:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 51 transitions. [2021-08-26 14:42:49,775 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 51 transitions. Word has length 9 [2021-08-26 14:42:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:49,776 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 51 transitions. [2021-08-26 14:42:49,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 51 transitions. [2021-08-26 14:42:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 14:42:49,776 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:49,777 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:49,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 14:42:49,777 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:42:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1918583086, now seen corresponding path program 1 times [2021-08-26 14:42:49,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:49,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366258123] [2021-08-26 14:42:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:49,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:49,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:49,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366258123] [2021-08-26 14:42:49,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366258123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:49,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:49,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:42:49,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142593130] [2021-08-26 14:42:49,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 14:42:49,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:49,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 14:42:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:49,871 INFO L87 Difference]: Start difference. First operand 30 states and 51 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:49,889 INFO L93 Difference]: Finished difference Result 24 states and 38 transitions. [2021-08-26 14:42:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:42:49,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 14:42:49,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:49,890 INFO L225 Difference]: With dead ends: 24 [2021-08-26 14:42:49,890 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 14:42:49,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:42:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 14:42:49,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 14:42:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 14:42:49,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-08-26 14:42:49,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:49,892 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 14:42:49,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:42:49,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 14:42:49,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 14:42:49,894 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:42:49,894 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-26 14:42:49,894 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-26 14:42:49,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 14:42:49,897 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-26 14:42:49,897 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 14:42:49,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:42:49 BasicIcfg [2021-08-26 14:42:49,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 14:42:49,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 14:42:49,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 14:42:49,900 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 14:42:49,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:42:45" (3/4) ... [2021-08-26 14:42:49,902 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 14:42:49,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-26 14:42:49,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-26 14:42:49,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-26 14:42:49,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 14:42:49,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:42:49,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:42:49,932 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 14:42:49,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 14:42:49,933 INFO L168 Benchmark]: Toolchain (without parser) took 5283.35 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 39.9 MB in the beginning and 72.8 MB in the end (delta: -32.9 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:49,934 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 46.1 MB. Free memory was 28.8 MB in the beginning and 28.7 MB in the end (delta: 53.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:42:49,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.74 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 30.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:49,934 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.55 ms. Allocated memory is still 56.6 MB. Free memory was 30.5 MB in the beginning and 28.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:42:49,935 INFO L168 Benchmark]: Boogie Preprocessor took 46.47 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 39.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:49,935 INFO L168 Benchmark]: RCFGBuilder took 502.13 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 31.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:49,935 INFO L168 Benchmark]: TraceAbstraction took 4133.08 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 31.4 MB in the beginning and 75.9 MB in the end (delta: -44.5 MB). Peak memory consumption was 122.6 kB. Max. memory is 16.1 GB. [2021-08-26 14:42:49,936 INFO L168 Benchmark]: Witness Printer took 32.86 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 72.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:49,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 46.1 MB. Free memory was 28.8 MB in the beginning and 28.7 MB in the end (delta: 53.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 500.74 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 30.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.55 ms. Allocated memory is still 56.6 MB. Free memory was 30.5 MB in the beginning and 28.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.47 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 39.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 502.13 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 31.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4133.08 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 31.4 MB in the beginning and 75.9 MB in the end (delta: -44.5 MB). Peak memory consumption was 122.6 kB. Max. memory is 16.1 GB. * Witness Printer took 32.86 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 72.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2989.9ms, 72 PlacesBefore, 22 PlacesAfterwards, 67 TransitionsBefore, 15 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1496 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 955, positive: 882, positive conditional: 0, positive unconditional: 882, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 537, positive: 514, positive conditional: 0, positive unconditional: 514, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 537, positive: 511, positive conditional: 0, positive unconditional: 511, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 74, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 955, positive: 368, positive conditional: 0, positive unconditional: 368, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 537, unknown conditional: 0, unknown unconditional: 537] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - 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 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4026.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 10.2ms, AutomataDifference: 213.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3032.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 78 SDslu, 66 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 135.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 56.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.7ms SsaConstructionTime, 123.2ms SatisfiabilityAnalysisTime, 378.3ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-26 14:42:49,967 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...