./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/safe003_tso.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 cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:50:49,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:50:49,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:50:49,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:50:49,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:50:49,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:50:49,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:50:49,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:50:49,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:50:49,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:50:49,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:50:49,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:50:49,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:50:49,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:50:49,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:50:49,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:50:49,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:50:49,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:50:49,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:50:49,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:50:49,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:50:49,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:50:49,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:50:49,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:50:49,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:50:49,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:50:49,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:50:49,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:50:49,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:50:49,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:50:49,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:50:49,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:50:49,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:50:49,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:50:49,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:50:49,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:50:49,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:50:49,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:50:49,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:50:49,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:50:49,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:50:49,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:50:49,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:50:49,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:50:49,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:50:49,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:50:49,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:50:49,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:50:49,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:50:49,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:50:49,454 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:50:49,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:50:49,455 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:50:49,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:50:49,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:50:49,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:50:49,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:50:49,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:50:49,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:50:49,456 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:50:49,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:50:49,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:50:49,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:50:49,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:50:49,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:50:49,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:50:49,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:50:49,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:50:49,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:50:49,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:50:49,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:50:49,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:50:49,459 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:50:49,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:50:49,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:50:49,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:50:49,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 [2021-12-16 02:50:49,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:50:49,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:50:49,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:50:49,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:50:49,709 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:50:49,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe003_tso.i [2021-12-16 02:50:49,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ccb9038/331e873d4c404122b9d25aa1b848482b/FLAGf4d980cc2 [2021-12-16 02:50:50,203 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:50:50,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe003_tso.i [2021-12-16 02:50:50,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ccb9038/331e873d4c404122b9d25aa1b848482b/FLAGf4d980cc2 [2021-12-16 02:50:50,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ccb9038/331e873d4c404122b9d25aa1b848482b [2021-12-16 02:50:50,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:50:50,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:50:50,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:50:50,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:50:50,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:50:50,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ddbbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50, skipping insertion in model container [2021-12-16 02:50:50,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:50:50,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:50:50,414 WARN L230 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/safe003_tso.i[945,958] [2021-12-16 02:50:50,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:50:50,554 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:50:50,566 WARN L230 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/safe003_tso.i[945,958] [2021-12-16 02:50:50,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:50:50,613 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:50:50,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50 WrapperNode [2021-12-16 02:50:50,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:50:50,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:50:50,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:50:50,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:50:50,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,654 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-12-16 02:50:50,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:50:50,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:50:50,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:50:50,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:50:50,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:50:50,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:50:50,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:50:50,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:50:50,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (1/1) ... [2021-12-16 02:50:50,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:50:50,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:50:50,739 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) [2021-12-16 02:50:50,746 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 [2021-12-16 02:50:50,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 02:50:50,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 02:50:50,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:50:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 02:50:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 02:50:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-16 02:50:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-16 02:50:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-16 02:50:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-16 02:50:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-16 02:50:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-16 02:50:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:50:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 02:50:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:50:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:50:50,779 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 02:50:50,870 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:50:50,871 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:50:51,003 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:50:51,008 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:50:51,008 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 02:50:51,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:50:51 BoogieIcfgContainer [2021-12-16 02:50:51,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:50:51,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:50:51,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:50:51,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:50:51,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:50:50" (1/3) ... [2021-12-16 02:50:51,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19001a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:50:51, skipping insertion in model container [2021-12-16 02:50:51,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:50:50" (2/3) ... [2021-12-16 02:50:51,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19001a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:50:51, skipping insertion in model container [2021-12-16 02:50:51,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:50:51" (3/3) ... [2021-12-16 02:50:51,016 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2021-12-16 02:50:51,031 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 02:50:51,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:50:51,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 02:50:51,032 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 02:50:51,067 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,068 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,068 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,068 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,068 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,069 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,069 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,069 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,069 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,069 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,070 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,070 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,070 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,070 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,070 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,070 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,071 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,071 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,071 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,071 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,071 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,072 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,072 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,073 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,073 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,073 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,073 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,073 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,073 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,074 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,074 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,074 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,074 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,074 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,074 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,074 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,084 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,085 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,085 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,085 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,087 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,088 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,088 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,089 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,089 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,089 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:50:51,089 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-16 02:50:51,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:50:51,131 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-12-16 02:50:51,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-16 02:50:51,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2021-12-16 02:50:51,184 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2021-12-16 02:50:51,185 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:50:51,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-16 02:50:51,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2021-12-16 02:50:51,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2021-12-16 02:50:51,211 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-12-16 02:50:51,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:50:51,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:50:51,212 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:50:51,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:50:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:50:51,221 INFO L85 PathProgramCache]: Analyzing trace with hash -669003802, now seen corresponding path program 1 times [2021-12-16 02:50:51,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:50:51,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851439280] [2021-12-16 02:50:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:50:51,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:50:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:50:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:50:51,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:50:51,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851439280] [2021-12-16 02:50:51,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851439280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:50:51,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:50:51,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:50:51,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058145001] [2021-12-16 02:50:51,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:50:51,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:50:51,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:50:51,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:50:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:50:51,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-16 02:50:51,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2021-12-16 02:50:51,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:50:51,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-16 02:50:51,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:50:51,979 INFO L129 PetriNetUnfolder]: 293/695 cut-off events. [2021-12-16 02:50:51,979 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-12-16 02:50:51,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 695 events. 293/695 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3513 event pairs, 20 based on Foata normal form. 29/692 useless extension candidates. Maximal degree in co-relation 1191. Up to 113 conditions per place. [2021-12-16 02:50:51,990 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 22 selfloop transitions, 7 changer transitions 47/132 dead transitions. [2021-12-16 02:50:51,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 132 transitions, 425 flow [2021-12-16 02:50:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:50:51,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:50:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 992 transitions. [2021-12-16 02:50:52,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8294314381270903 [2021-12-16 02:50:52,010 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 992 transitions. [2021-12-16 02:50:52,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 992 transitions. [2021-12-16 02:50:52,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:50:52,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 992 transitions. [2021-12-16 02:50:52,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.3076923076923) internal successors, (992), 13 states have internal predecessors, (992), 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) [2021-12-16 02:50:52,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-16 02:50:52,028 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-16 02:50:52,030 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 992 transitions. [2021-12-16 02:50:52,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 132 transitions, 425 flow [2021-12-16 02:50:52,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 132 transitions, 422 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-16 02:50:52,039 INFO L242 Difference]: Finished difference. Result has 105 places, 78 transitions, 244 flow [2021-12-16 02:50:52,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=244, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2021-12-16 02:50:52,054 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2021-12-16 02:50:52,054 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 244 flow [2021-12-16 02:50:52,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2021-12-16 02:50:52,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:50:52,055 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:50:52,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:50:52,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:50:52,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:50:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash -992718650, now seen corresponding path program 1 times [2021-12-16 02:50:52,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:50:52,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952734552] [2021-12-16 02:50:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:50:52,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:50:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:50:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:50:52,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:50:52,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952734552] [2021-12-16 02:50:52,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952734552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:50:52,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:50:52,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:50:52,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672387890] [2021-12-16 02:50:52,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:50:52,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:50:52,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:50:52,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:50:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:50:52,168 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-16 02:50:52,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2021-12-16 02:50:52,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:50:52,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-16 02:50:52,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:50:52,369 INFO L129 PetriNetUnfolder]: 110/428 cut-off events. [2021-12-16 02:50:52,371 INFO L130 PetriNetUnfolder]: For 843/1211 co-relation queries the response was YES. [2021-12-16 02:50:52,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 428 events. 110/428 cut-off events. For 843/1211 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2146 event pairs, 13 based on Foata normal form. 14/429 useless extension candidates. Maximal degree in co-relation 1210. Up to 77 conditions per place. [2021-12-16 02:50:52,374 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 25 selfloop transitions, 7 changer transitions 40/128 dead transitions. [2021-12-16 02:50:52,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 128 transitions, 750 flow [2021-12-16 02:50:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:50:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:50:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 975 transitions. [2021-12-16 02:50:52,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8152173913043478 [2021-12-16 02:50:52,376 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 975 transitions. [2021-12-16 02:50:52,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 975 transitions. [2021-12-16 02:50:52,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:50:52,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 975 transitions. [2021-12-16 02:50:52,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 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) [2021-12-16 02:50:52,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-16 02:50:52,383 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-16 02:50:52,383 INFO L186 Difference]: Start difference. First operand has 105 places, 78 transitions, 244 flow. Second operand 13 states and 975 transitions. [2021-12-16 02:50:52,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 128 transitions, 750 flow [2021-12-16 02:50:52,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 128 transitions, 724 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-12-16 02:50:52,393 INFO L242 Difference]: Finished difference. Result has 116 places, 81 transitions, 326 flow [2021-12-16 02:50:52,393 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=326, PETRI_PLACES=116, PETRI_TRANSITIONS=81} [2021-12-16 02:50:52,394 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2021-12-16 02:50:52,394 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 81 transitions, 326 flow [2021-12-16 02:50:52,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2021-12-16 02:50:52,395 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:50:52,395 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:50:52,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:50:52,395 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:50:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:50:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -201662750, now seen corresponding path program 1 times [2021-12-16 02:50:52,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:50:52,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083251400] [2021-12-16 02:50:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:50:52,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:50:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:50:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:50:52,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:50:52,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083251400] [2021-12-16 02:50:52,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083251400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:50:52,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:50:52,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:50:52,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924416090] [2021-12-16 02:50:52,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:50:52,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:50:52,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:50:52,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:50:52,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:50:52,499 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-16 02:50:52,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 81 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 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) [2021-12-16 02:50:52,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:50:52,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-16 02:50:52,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:50:52,636 INFO L129 PetriNetUnfolder]: 48/279 cut-off events. [2021-12-16 02:50:52,636 INFO L130 PetriNetUnfolder]: For 959/1405 co-relation queries the response was YES. [2021-12-16 02:50:52,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 279 events. 48/279 cut-off events. For 959/1405 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1237 event pairs, 2 based on Foata normal form. 7/278 useless extension candidates. Maximal degree in co-relation 861. Up to 46 conditions per place. [2021-12-16 02:50:52,638 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 20 selfloop transitions, 12 changer transitions 37/125 dead transitions. [2021-12-16 02:50:52,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 125 transitions, 889 flow [2021-12-16 02:50:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:50:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:50:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 828 transitions. [2021-12-16 02:50:52,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2021-12-16 02:50:52,640 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 828 transitions. [2021-12-16 02:50:52,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 828 transitions. [2021-12-16 02:50:52,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:50:52,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 828 transitions. [2021-12-16 02:50:52,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.27272727272727) internal successors, (828), 11 states have internal predecessors, (828), 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) [2021-12-16 02:50:52,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2021-12-16 02:50:52,645 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2021-12-16 02:50:52,645 INFO L186 Difference]: Start difference. First operand has 116 places, 81 transitions, 326 flow. Second operand 11 states and 828 transitions. [2021-12-16 02:50:52,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 125 transitions, 889 flow [2021-12-16 02:50:52,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 125 transitions, 804 flow, removed 40 selfloop flow, removed 4 redundant places. [2021-12-16 02:50:52,650 INFO L242 Difference]: Finished difference. Result has 121 places, 81 transitions, 352 flow [2021-12-16 02:50:52,651 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=352, PETRI_PLACES=121, PETRI_TRANSITIONS=81} [2021-12-16 02:50:52,651 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 37 predicate places. [2021-12-16 02:50:52,651 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 81 transitions, 352 flow [2021-12-16 02:50:52,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 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) [2021-12-16 02:50:52,652 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:50:52,652 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:50:52,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:50:52,652 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:50:52,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:50:52,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1956027009, now seen corresponding path program 1 times [2021-12-16 02:50:52,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:50:52,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655202577] [2021-12-16 02:50:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:50:52,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:50:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:50:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:50:52,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:50:52,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655202577] [2021-12-16 02:50:52,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655202577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:50:52,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:50:52,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:50:52,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534061744] [2021-12-16 02:50:52,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:50:52,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:50:52,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:50:52,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:50:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:50:52,751 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-16 02:50:52,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 81 transitions, 352 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-12-16 02:50:52,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:50:52,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-16 02:50:52,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:50:52,906 INFO L129 PetriNetUnfolder]: 19/206 cut-off events. [2021-12-16 02:50:52,907 INFO L130 PetriNetUnfolder]: For 673/850 co-relation queries the response was YES. [2021-12-16 02:50:52,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 206 events. 19/206 cut-off events. For 673/850 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 748 event pairs, 2 based on Foata normal form. 7/208 useless extension candidates. Maximal degree in co-relation 586. Up to 27 conditions per place. [2021-12-16 02:50:52,909 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 11 changer transitions 21/108 dead transitions. [2021-12-16 02:50:52,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 108 transitions, 692 flow [2021-12-16 02:50:52,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:50:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:50:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 958 transitions. [2021-12-16 02:50:52,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8010033444816054 [2021-12-16 02:50:52,911 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 958 transitions. [2021-12-16 02:50:52,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 958 transitions. [2021-12-16 02:50:52,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:50:52,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 958 transitions. [2021-12-16 02:50:52,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.6923076923077) internal successors, (958), 13 states have internal predecessors, (958), 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) [2021-12-16 02:50:52,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-16 02:50:52,916 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-16 02:50:52,916 INFO L186 Difference]: Start difference. First operand has 121 places, 81 transitions, 352 flow. Second operand 13 states and 958 transitions. [2021-12-16 02:50:52,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 108 transitions, 692 flow [2021-12-16 02:50:52,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 108 transitions, 523 flow, removed 59 selfloop flow, removed 20 redundant places. [2021-12-16 02:50:52,920 INFO L242 Difference]: Finished difference. Result has 116 places, 82 transitions, 322 flow [2021-12-16 02:50:52,921 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=322, PETRI_PLACES=116, PETRI_TRANSITIONS=82} [2021-12-16 02:50:52,921 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2021-12-16 02:50:52,921 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 82 transitions, 322 flow [2021-12-16 02:50:52,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-12-16 02:50:52,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:50:52,922 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:50:52,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:50:52,922 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:50:52,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:50:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash 592493257, now seen corresponding path program 2 times [2021-12-16 02:50:52,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:50:52,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503827215] [2021-12-16 02:50:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:50:52,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:50:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:50:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:50:53,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:50:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503827215] [2021-12-16 02:50:53,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503827215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:50:53,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:50:53,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:50:53,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826663435] [2021-12-16 02:50:53,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:50:53,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:50:53,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:50:53,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:50:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:50:53,032 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-16 02:50:53,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 82 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-12-16 02:50:53,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:50:53,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-16 02:50:53,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:50:53,105 INFO L129 PetriNetUnfolder]: 6/149 cut-off events. [2021-12-16 02:50:53,105 INFO L130 PetriNetUnfolder]: For 277/368 co-relation queries the response was YES. [2021-12-16 02:50:53,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 149 events. 6/149 cut-off events. For 277/368 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 477 event pairs, 1 based on Foata normal form. 6/150 useless extension candidates. Maximal degree in co-relation 353. Up to 16 conditions per place. [2021-12-16 02:50:53,106 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 13 selfloop transitions, 6 changer transitions 18/93 dead transitions. [2021-12-16 02:50:53,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 93 transitions, 489 flow [2021-12-16 02:50:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 02:50:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-16 02:50:53,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 593 transitions. [2021-12-16 02:50:53,108 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8057065217391305 [2021-12-16 02:50:53,108 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 593 transitions. [2021-12-16 02:50:53,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 593 transitions. [2021-12-16 02:50:53,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:50:53,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 593 transitions. [2021-12-16 02:50:53,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.125) internal successors, (593), 8 states have internal predecessors, (593), 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) [2021-12-16 02:50:53,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-12-16 02:50:53,111 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-12-16 02:50:53,111 INFO L186 Difference]: Start difference. First operand has 116 places, 82 transitions, 322 flow. Second operand 8 states and 593 transitions. [2021-12-16 02:50:53,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 93 transitions, 489 flow [2021-12-16 02:50:53,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 446 flow, removed 17 selfloop flow, removed 11 redundant places. [2021-12-16 02:50:53,114 INFO L242 Difference]: Finished difference. Result has 108 places, 74 transitions, 235 flow [2021-12-16 02:50:53,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=235, PETRI_PLACES=108, PETRI_TRANSITIONS=74} [2021-12-16 02:50:53,116 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 24 predicate places. [2021-12-16 02:50:53,116 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 74 transitions, 235 flow [2021-12-16 02:50:53,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-12-16 02:50:53,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:50:53,117 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:50:53,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:50:53,117 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:50:53,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:50:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1667752555, now seen corresponding path program 1 times [2021-12-16 02:50:53,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:50:53,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277217794] [2021-12-16 02:50:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:50:53,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:50:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:50:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:50:53,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:50:53,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277217794] [2021-12-16 02:50:53,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277217794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:50:53,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:50:53,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:50:53,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037950807] [2021-12-16 02:50:53,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:50:53,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:50:53,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:50:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:50:53,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:50:53,239 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2021-12-16 02:50:53,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 74 transitions, 235 flow. Second operand has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 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) [2021-12-16 02:50:53,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:50:53,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2021-12-16 02:50:53,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:50:53,319 INFO L129 PetriNetUnfolder]: 6/88 cut-off events. [2021-12-16 02:50:53,319 INFO L130 PetriNetUnfolder]: For 87/101 co-relation queries the response was YES. [2021-12-16 02:50:53,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 88 events. 6/88 cut-off events. For 87/101 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 2 based on Foata normal form. 2/87 useless extension candidates. Maximal degree in co-relation 182. Up to 14 conditions per place. [2021-12-16 02:50:53,319 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2021-12-16 02:50:53,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 79 transitions, 307 flow [2021-12-16 02:50:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:50:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:50:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 708 transitions. [2021-12-16 02:50:53,322 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7695652173913043 [2021-12-16 02:50:53,322 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 708 transitions. [2021-12-16 02:50:53,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 708 transitions. [2021-12-16 02:50:53,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:50:53,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 708 transitions. [2021-12-16 02:50:53,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.8) internal successors, (708), 10 states have internal predecessors, (708), 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) [2021-12-16 02:50:53,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2021-12-16 02:50:53,325 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2021-12-16 02:50:53,325 INFO L186 Difference]: Start difference. First operand has 108 places, 74 transitions, 235 flow. Second operand 10 states and 708 transitions. [2021-12-16 02:50:53,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 79 transitions, 307 flow [2021-12-16 02:50:53,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 79 transitions, 249 flow, removed 10 selfloop flow, removed 15 redundant places. [2021-12-16 02:50:53,327 INFO L242 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2021-12-16 02:50:53,327 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2021-12-16 02:50:53,327 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2021-12-16 02:50:53,328 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2021-12-16 02:50:53,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 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) [2021-12-16 02:50:53,330 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-16 02:50:53,330 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-16 02:50:53,330 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-16 02:50:53,331 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-16 02:50:53,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:50:53,333 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-12-16 02:50:53,334 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-16 02:50:53,334 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:50:53,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:50:53 BasicIcfg [2021-12-16 02:50:53,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:50:53,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:50:53,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:50:53,337 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:50:53,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:50:51" (3/4) ... [2021-12-16 02:50:53,339 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 02:50:53,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-16 02:50:53,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-16 02:50:53,344 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-16 02:50:53,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-16 02:50:53,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-16 02:50:53,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 02:50:53,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 02:50:53,366 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 02:50:53,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:50:53,367 INFO L158 Benchmark]: Toolchain (without parser) took 3139.52ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 55.7MB in the beginning and 103.2MB in the end (delta: -47.5MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2021-12-16 02:50:53,367 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 62.6MB in the beginning and 62.5MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:50:53,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.07ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 55.7MB in the beginning and 78.7MB in the end (delta: -23.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 02:50:53,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.08ms. Allocated memory is still 113.2MB. Free memory was 78.7MB in the beginning and 76.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:50:53,368 INFO L158 Benchmark]: Boogie Preprocessor took 42.50ms. Allocated memory is still 113.2MB. Free memory was 76.7MB in the beginning and 75.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:50:53,368 INFO L158 Benchmark]: RCFGBuilder took 311.14ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 62.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 02:50:53,368 INFO L158 Benchmark]: TraceAbstraction took 2325.40ms. Allocated memory was 113.2MB in the beginning and 159.4MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 106.3MB in the end (delta: -44.0MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-12-16 02:50:53,368 INFO L158 Benchmark]: Witness Printer took 29.40ms. Allocated memory is still 159.4MB. Free memory was 106.3MB in the beginning and 103.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:50:53,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 62.6MB in the beginning and 62.5MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.07ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 55.7MB in the beginning and 78.7MB in the end (delta: -23.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.08ms. Allocated memory is still 113.2MB. Free memory was 78.7MB in the beginning and 76.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.50ms. Allocated memory is still 113.2MB. Free memory was 76.7MB in the beginning and 75.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.14ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 62.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2325.40ms. Allocated memory was 113.2MB in the beginning and 159.4MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 106.3MB in the end (delta: -44.0MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Witness Printer took 29.40ms. Allocated memory is still 159.4MB. Free memory was 106.3MB in the beginning and 103.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 320 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 320 mSDsluCounter, 480 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 436 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 341 IncrementalHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 119 mSDtfsCounter, 341 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=3, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 361 NumberOfCodeBlocks, 361 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 1933 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! [2021-12-16 02:50:53,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE