./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe032_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/safe032_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 ffff09405c16ea86880fae0b9b6268edfa5ef4b2d03cee31a9e4f2e1ac044811 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:32:47,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:32:47,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:32:47,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:32:47,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:32:47,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:32:47,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:32:47,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:32:47,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:32:47,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:32:47,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:32:47,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:32:47,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:32:47,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:32:47,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:32:47,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:32:47,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:32:47,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:32:47,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:32:47,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:32:47,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:32:47,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:32:47,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:32:47,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:32:47,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:32:47,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:32:47,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:32:47,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:32:47,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:32:47,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:32:47,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:32:47,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:32:47,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:32:47,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:32:47,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:32:47,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:32:47,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:32:47,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:32:47,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:32:47,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:32:47,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:32:47,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:32:47,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:32:47,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:32:47,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:32:47,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:32:47,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:32:47,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:32:47,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:32:47,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:32:47,417 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:32:47,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:32:47,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:32:47,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:32:47,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:32:47,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:32:47,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:32:47,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:32:47,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:32:47,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:32:47,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:32:47,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:32:47,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:32:47,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:32:47,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:32:47,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:32:47,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:32:47,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:32:47,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:32:47,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:32:47,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:32:47,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:32:47,422 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:32:47,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:32:47,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:32:47,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:32:47,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffff09405c16ea86880fae0b9b6268edfa5ef4b2d03cee31a9e4f2e1ac044811 [2021-12-22 13:32:47,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:32:47,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:32:47,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:32:47,589 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:32:47,590 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:32:47,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe032_tso.i [2021-12-22 13:32:47,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7e32fd1/bcb3f04f2914496c8d758494f115195c/FLAG75c2ebd92 [2021-12-22 13:32:48,035 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:32:48,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe032_tso.i [2021-12-22 13:32:48,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7e32fd1/bcb3f04f2914496c8d758494f115195c/FLAG75c2ebd92 [2021-12-22 13:32:48,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7e32fd1/bcb3f04f2914496c8d758494f115195c [2021-12-22 13:32:48,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:32:48,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:32:48,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:32:48,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:32:48,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:32:48,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:48,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c261c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48, skipping insertion in model container [2021-12-22 13:32:48,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:48,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:32:48,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:32:48,730 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/safe032_tso.i[945,958] [2021-12-22 13:32:48,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:32:48,865 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:32:48,874 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/safe032_tso.i[945,958] [2021-12-22 13:32:48,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:32:48,933 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:32:48,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48 WrapperNode [2021-12-22 13:32:48,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:32:48,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:32:48,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:32:48,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:32:48,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:48,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:48,981 INFO L137 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-12-22 13:32:48,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:32:48,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:32:48,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:32:48,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:32:48,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:48,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:49,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:49,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:49,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:49,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:49,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:49,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:32:49,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:32:49,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:32:49,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:32:49,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (1/1) ... [2021-12-22 13:32:49,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:32:49,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:32:49,051 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) [2021-12-22 13:32:49,069 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 [2021-12-22 13:32:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:32:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-22 13:32:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:32:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:32:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:32:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-22 13:32:49,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-22 13:32:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-22 13:32:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-22 13:32:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-22 13:32:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-22 13:32:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:32:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-22 13:32:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:32:49,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:32:49,102 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-22 13:32:49,212 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:32:49,213 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:32:49,345 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:32:49,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:32:49,350 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 13:32:49,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:32:49 BoogieIcfgContainer [2021-12-22 13:32:49,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:32:49,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:32:49,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:32:49,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:32:49,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:32:48" (1/3) ... [2021-12-22 13:32:49,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a568e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:32:49, skipping insertion in model container [2021-12-22 13:32:49,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:48" (2/3) ... [2021-12-22 13:32:49,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a568e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:32:49, skipping insertion in model container [2021-12-22 13:32:49,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:32:49" (3/3) ... [2021-12-22 13:32:49,357 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.i [2021-12-22 13:32:49,369 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-22 13:32:49,369 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:32:49,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:32:49,370 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 13:32:49,398 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,398 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,398 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,398 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,399 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,399 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,399 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,399 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,400 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,400 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,400 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,400 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,400 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,401 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,401 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,401 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,401 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,401 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,402 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,402 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,403 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,406 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,406 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,406 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,407 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,407 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,407 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,407 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,408 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,408 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,408 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,408 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,409 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,409 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,411 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,411 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,414 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,415 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,415 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,415 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,423 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,423 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,423 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,423 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,424 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,424 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,424 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,425 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:49,425 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-22 13:32:49,460 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:32:49,467 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 [2021-12-22 13:32:49,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-22 13:32:49,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2021-12-22 13:32:49,522 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2021-12-22 13:32:49,523 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-22 13:32:49,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-22 13:32:49,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2021-12-22 13:32:49,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2021-12-22 13:32:49,554 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-12-22 13:32:49,554 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-22 13:32:49,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:49,556 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] [2021-12-22 13:32:49,556 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:32:49,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash -669780344, now seen corresponding path program 1 times [2021-12-22 13:32:49,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:49,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143595694] [2021-12-22 13:32:49,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:49,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:32:49,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:49,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143595694] [2021-12-22 13:32:49,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143595694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:49,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:49,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:32:49,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342893940] [2021-12-22 13:32:49,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:49,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:32:49,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:32:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:32:49,966 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-22 13:32:49,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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) [2021-12-22 13:32:49,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:49,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-22 13:32:49,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:50,221 INFO L129 PetriNetUnfolder]: 693/1319 cut-off events. [2021-12-22 13:32:50,222 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-22 13:32:50,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2441 conditions, 1319 events. 693/1319 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7037 event pairs, 112 based on Foata normal form. 42/1313 useless extension candidates. Maximal degree in co-relation 2404. Up to 444 conditions per place. [2021-12-22 13:32:50,230 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 24 selfloop transitions, 7 changer transitions 43/128 dead transitions. [2021-12-22 13:32:50,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 419 flow [2021-12-22 13:32:50,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:32:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-22 13:32:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 690 transitions. [2021-12-22 13:32:50,243 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8424908424908425 [2021-12-22 13:32:50,244 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 690 transitions. [2021-12-22 13:32:50,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 690 transitions. [2021-12-22 13:32:50,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:50,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 690 transitions. [2021-12-22 13:32:50,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 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) [2021-12-22 13:32:50,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-12-22 13:32:50,256 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-12-22 13:32:50,257 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 690 transitions. [2021-12-22 13:32:50,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 419 flow [2021-12-22 13:32:50,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-22 13:32:50,262 INFO L242 Difference]: Finished difference. Result has 96 places, 79 transitions, 254 flow [2021-12-22 13:32:50,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2021-12-22 13:32:50,266 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 13 predicate places. [2021-12-22 13:32:50,266 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 254 flow [2021-12-22 13:32:50,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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) [2021-12-22 13:32:50,266 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:50,266 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] [2021-12-22 13:32:50,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:32:50,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:32:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:50,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2045920767, now seen corresponding path program 1 times [2021-12-22 13:32:50,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:50,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004657767] [2021-12-22 13:32:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:50,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:32:50,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:50,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004657767] [2021-12-22 13:32:50,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004657767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:50,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:50,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:32:50,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611386208] [2021-12-22 13:32:50,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:50,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:32:50,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:32:50,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:32:50,366 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-22 13:32:50,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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) [2021-12-22 13:32:50,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:50,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-22 13:32:50,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:50,622 INFO L129 PetriNetUnfolder]: 504/1087 cut-off events. [2021-12-22 13:32:50,622 INFO L130 PetriNetUnfolder]: For 2713/2868 co-relation queries the response was YES. [2021-12-22 13:32:50,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3977 conditions, 1087 events. 504/1087 cut-off events. For 2713/2868 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5901 event pairs, 34 based on Foata normal form. 27/1081 useless extension candidates. Maximal degree in co-relation 3933. Up to 469 conditions per place. [2021-12-22 13:32:50,634 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 25 selfloop transitions, 12 changer transitions 52/143 dead transitions. [2021-12-22 13:32:50,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 143 transitions, 874 flow [2021-12-22 13:32:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:32:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:32:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 968 transitions. [2021-12-22 13:32:50,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8182586644125106 [2021-12-22 13:32:50,637 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 968 transitions. [2021-12-22 13:32:50,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 968 transitions. [2021-12-22 13:32:50,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:50,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 968 transitions. [2021-12-22 13:32:50,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.46153846153847) internal successors, (968), 13 states have internal predecessors, (968), 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) [2021-12-22 13:32:50,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-12-22 13:32:50,642 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-12-22 13:32:50,642 INFO L186 Difference]: Start difference. First operand has 96 places, 79 transitions, 254 flow. Second operand 13 states and 968 transitions. [2021-12-22 13:32:50,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 143 transitions, 874 flow [2021-12-22 13:32:50,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 143 transitions, 804 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-22 13:32:50,650 INFO L242 Difference]: Finished difference. Result has 112 places, 85 transitions, 370 flow [2021-12-22 13:32:50,650 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=370, PETRI_PLACES=112, PETRI_TRANSITIONS=85} [2021-12-22 13:32:50,651 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 29 predicate places. [2021-12-22 13:32:50,651 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 85 transitions, 370 flow [2021-12-22 13:32:50,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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) [2021-12-22 13:32:50,651 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:50,652 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] [2021-12-22 13:32:50,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:32:50,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:32:50,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1147349385, now seen corresponding path program 1 times [2021-12-22 13:32:50,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:50,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433400201] [2021-12-22 13:32:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:50,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:32:50,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:50,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433400201] [2021-12-22 13:32:50,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433400201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:50,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:50,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:32:50,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756157597] [2021-12-22 13:32:50,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:50,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:32:50,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:32:50,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:32:50,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-22 13:32:50,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 85 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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) [2021-12-22 13:32:50,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:50,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-22 13:32:50,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:51,018 INFO L129 PetriNetUnfolder]: 327/827 cut-off events. [2021-12-22 13:32:51,018 INFO L130 PetriNetUnfolder]: For 4009/4655 co-relation queries the response was YES. [2021-12-22 13:32:51,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 827 events. 327/827 cut-off events. For 4009/4655 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4585 event pairs, 8 based on Foata normal form. 32/829 useless extension candidates. Maximal degree in co-relation 3355. Up to 303 conditions per place. [2021-12-22 13:32:51,024 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 35 selfloop transitions, 7 changer transitions 67/163 dead transitions. [2021-12-22 13:32:51,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 1326 flow [2021-12-22 13:32:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:32:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:32:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 966 transitions. [2021-12-22 13:32:51,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8165680473372781 [2021-12-22 13:32:51,027 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 966 transitions. [2021-12-22 13:32:51,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 966 transitions. [2021-12-22 13:32:51,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:51,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 966 transitions. [2021-12-22 13:32:51,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.3076923076923) internal successors, (966), 13 states have internal predecessors, (966), 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) [2021-12-22 13:32:51,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-12-22 13:32:51,033 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-12-22 13:32:51,033 INFO L186 Difference]: Start difference. First operand has 112 places, 85 transitions, 370 flow. Second operand 13 states and 966 transitions. [2021-12-22 13:32:51,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 1326 flow [2021-12-22 13:32:51,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 163 transitions, 1258 flow, removed 34 selfloop flow, removed 3 redundant places. [2021-12-22 13:32:51,050 INFO L242 Difference]: Finished difference. Result has 124 places, 88 transitions, 448 flow [2021-12-22 13:32:51,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=448, PETRI_PLACES=124, PETRI_TRANSITIONS=88} [2021-12-22 13:32:51,052 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 41 predicate places. [2021-12-22 13:32:51,053 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 88 transitions, 448 flow [2021-12-22 13:32:51,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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) [2021-12-22 13:32:51,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:51,054 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] [2021-12-22 13:32:51,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:32:51,057 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:32:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:51,058 INFO L85 PathProgramCache]: Analyzing trace with hash -532063284, now seen corresponding path program 1 times [2021-12-22 13:32:51,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:51,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295362951] [2021-12-22 13:32:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:51,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:32:51,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:51,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295362951] [2021-12-22 13:32:51,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295362951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:51,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:51,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:32:51,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756860271] [2021-12-22 13:32:51,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:51,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:32:51,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:51,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:32:51,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:32:51,122 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 91 [2021-12-22 13:32:51,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 88 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2021-12-22 13:32:51,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:51,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 91 [2021-12-22 13:32:51,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:51,246 INFO L129 PetriNetUnfolder]: 115/473 cut-off events. [2021-12-22 13:32:51,246 INFO L130 PetriNetUnfolder]: For 3213/3609 co-relation queries the response was YES. [2021-12-22 13:32:51,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 473 events. 115/473 cut-off events. For 3213/3609 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2561 event pairs, 15 based on Foata normal form. 75/529 useless extension candidates. Maximal degree in co-relation 1808. Up to 145 conditions per place. [2021-12-22 13:32:51,250 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 21 selfloop transitions, 5 changer transitions 29/119 dead transitions. [2021-12-22 13:32:51,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 916 flow [2021-12-22 13:32:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:32:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-22 13:32:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 693 transitions. [2021-12-22 13:32:51,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2021-12-22 13:32:51,252 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 693 transitions. [2021-12-22 13:32:51,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 693 transitions. [2021-12-22 13:32:51,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:51,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 693 transitions. [2021-12-22 13:32:51,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.0) internal successors, (693), 9 states have internal predecessors, (693), 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) [2021-12-22 13:32:51,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-12-22 13:32:51,255 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-12-22 13:32:51,255 INFO L186 Difference]: Start difference. First operand has 124 places, 88 transitions, 448 flow. Second operand 9 states and 693 transitions. [2021-12-22 13:32:51,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 916 flow [2021-12-22 13:32:51,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 841 flow, removed 35 selfloop flow, removed 8 redundant places. [2021-12-22 13:32:51,262 INFO L242 Difference]: Finished difference. Result has 122 places, 85 transitions, 412 flow [2021-12-22 13:32:51,262 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=412, PETRI_PLACES=122, PETRI_TRANSITIONS=85} [2021-12-22 13:32:51,263 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 39 predicate places. [2021-12-22 13:32:51,263 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 85 transitions, 412 flow [2021-12-22 13:32:51,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2021-12-22 13:32:51,264 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:51,264 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] [2021-12-22 13:32:51,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:32:51,264 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:32:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash 675104110, now seen corresponding path program 1 times [2021-12-22 13:32:51,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:51,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021448212] [2021-12-22 13:32:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:51,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:32:51,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:51,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021448212] [2021-12-22 13:32:51,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021448212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:51,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:51,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:32:51,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195132694] [2021-12-22 13:32:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:51,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:32:51,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:51,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:32:51,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:32:51,335 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2021-12-22 13:32:51,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 85 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-12-22 13:32:51,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:51,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2021-12-22 13:32:51,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:51,421 INFO L129 PetriNetUnfolder]: 71/301 cut-off events. [2021-12-22 13:32:51,421 INFO L130 PetriNetUnfolder]: For 1555/1818 co-relation queries the response was YES. [2021-12-22 13:32:51,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 301 events. 71/301 cut-off events. For 1555/1818 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1262 event pairs, 10 based on Foata normal form. 18/312 useless extension candidates. Maximal degree in co-relation 1107. Up to 87 conditions per place. [2021-12-22 13:32:51,424 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 14 selfloop transitions, 8 changer transitions 24/114 dead transitions. [2021-12-22 13:32:51,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 114 transitions, 808 flow [2021-12-22 13:32:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:32:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-22 13:32:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2021-12-22 13:32:51,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8693528693528694 [2021-12-22 13:32:51,426 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 712 transitions. [2021-12-22 13:32:51,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 712 transitions. [2021-12-22 13:32:51,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:51,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 712 transitions. [2021-12-22 13:32:51,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.11111111111111) internal successors, (712), 9 states have internal predecessors, (712), 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) [2021-12-22 13:32:51,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-12-22 13:32:51,429 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-12-22 13:32:51,429 INFO L186 Difference]: Start difference. First operand has 122 places, 85 transitions, 412 flow. Second operand 9 states and 712 transitions. [2021-12-22 13:32:51,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 114 transitions, 808 flow [2021-12-22 13:32:51,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 114 transitions, 706 flow, removed 47 selfloop flow, removed 16 redundant places. [2021-12-22 13:32:51,435 INFO L242 Difference]: Finished difference. Result has 115 places, 88 transitions, 436 flow [2021-12-22 13:32:51,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=436, PETRI_PLACES=115, PETRI_TRANSITIONS=88} [2021-12-22 13:32:51,436 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2021-12-22 13:32:51,436 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 88 transitions, 436 flow [2021-12-22 13:32:51,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-12-22 13:32:51,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:51,437 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] [2021-12-22 13:32:51,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:32:51,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:32:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1013035987, now seen corresponding path program 1 times [2021-12-22 13:32:51,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:51,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902790771] [2021-12-22 13:32:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:51,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:32:51,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:51,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902790771] [2021-12-22 13:32:51,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902790771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:51,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:51,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:32:51,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617269466] [2021-12-22 13:32:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:51,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:32:51,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:51,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:32:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:32:51,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-22 13:32:51,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 88 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2021-12-22 13:32:51,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:51,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-22 13:32:51,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:51,625 INFO L129 PetriNetUnfolder]: 303/929 cut-off events. [2021-12-22 13:32:51,625 INFO L130 PetriNetUnfolder]: For 1296/1414 co-relation queries the response was YES. [2021-12-22 13:32:51,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 929 events. 303/929 cut-off events. For 1296/1414 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6727 event pairs, 39 based on Foata normal form. 7/847 useless extension candidates. Maximal degree in co-relation 2162. Up to 206 conditions per place. [2021-12-22 13:32:51,632 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2021-12-22 13:32:51,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 596 flow [2021-12-22 13:32:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:32:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-22 13:32:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2021-12-22 13:32:51,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2021-12-22 13:32:51,635 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2021-12-22 13:32:51,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2021-12-22 13:32:51,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:51,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2021-12-22 13:32:51,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 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) [2021-12-22 13:32:51,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-12-22 13:32:51,638 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-12-22 13:32:51,638 INFO L186 Difference]: Start difference. First operand has 115 places, 88 transitions, 436 flow. Second operand 10 states and 788 transitions. [2021-12-22 13:32:51,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 596 flow [2021-12-22 13:32:51,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 120 transitions, 567 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-12-22 13:32:51,642 INFO L242 Difference]: Finished difference. Result has 116 places, 103 transitions, 527 flow [2021-12-22 13:32:51,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=527, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2021-12-22 13:32:51,643 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2021-12-22 13:32:51,643 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 527 flow [2021-12-22 13:32:51,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2021-12-22 13:32:51,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:51,644 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] [2021-12-22 13:32:51,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:32:51,644 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:32:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash 888305234, now seen corresponding path program 1 times [2021-12-22 13:32:51,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:51,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342719375] [2021-12-22 13:32:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:51,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:32:51,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:51,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342719375] [2021-12-22 13:32:51,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342719375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:51,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:51,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:32:51,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357737466] [2021-12-22 13:32:51,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:51,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:32:51,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:51,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:32:51,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:32:51,711 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-22 13:32:51,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 527 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2021-12-22 13:32:51,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:51,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-22 13:32:51,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:51,878 INFO L129 PetriNetUnfolder]: 264/830 cut-off events. [2021-12-22 13:32:51,879 INFO L130 PetriNetUnfolder]: For 1874/2291 co-relation queries the response was YES. [2021-12-22 13:32:51,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2770 conditions, 830 events. 264/830 cut-off events. For 1874/2291 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6232 event pairs, 3 based on Foata normal form. 92/856 useless extension candidates. Maximal degree in co-relation 2710. Up to 246 conditions per place. [2021-12-22 13:32:51,886 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 22 selfloop transitions, 32 changer transitions 13/141 dead transitions. [2021-12-22 13:32:51,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 141 transitions, 897 flow [2021-12-22 13:32:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:32:51,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:32:51,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2021-12-22 13:32:51,888 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2021-12-22 13:32:51,888 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2021-12-22 13:32:51,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2021-12-22 13:32:51,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:51,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2021-12-22 13:32:51,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 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) [2021-12-22 13:32:51,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-12-22 13:32:51,893 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-12-22 13:32:51,893 INFO L186 Difference]: Start difference. First operand has 116 places, 103 transitions, 527 flow. Second operand 13 states and 1025 transitions. [2021-12-22 13:32:51,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 141 transitions, 897 flow [2021-12-22 13:32:51,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 141 transitions, 889 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-12-22 13:32:51,900 INFO L242 Difference]: Finished difference. Result has 131 places, 119 transitions, 722 flow [2021-12-22 13:32:51,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=722, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2021-12-22 13:32:51,900 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 48 predicate places. [2021-12-22 13:32:51,901 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 722 flow [2021-12-22 13:32:51,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2021-12-22 13:32:51,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:51,901 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, 1] [2021-12-22 13:32:51,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:32:51,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:32:51,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1610954983, now seen corresponding path program 1 times [2021-12-22 13:32:51,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:51,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844913718] [2021-12-22 13:32:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:51,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:32:51,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:51,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844913718] [2021-12-22 13:32:51,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844913718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:51,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:51,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:32:51,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704402214] [2021-12-22 13:32:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:51,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:32:51,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:32:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:32:51,965 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-22 13:32:51,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 722 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2021-12-22 13:32:51,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:51,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-22 13:32:51,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:52,170 INFO L129 PetriNetUnfolder]: 226/744 cut-off events. [2021-12-22 13:32:52,170 INFO L130 PetriNetUnfolder]: For 2849/3161 co-relation queries the response was YES. [2021-12-22 13:32:52,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 744 events. 226/744 cut-off events. For 2849/3161 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5741 event pairs, 0 based on Foata normal form. 69/751 useless extension candidates. Maximal degree in co-relation 2894. Up to 197 conditions per place. [2021-12-22 13:32:52,175 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 0 selfloop transitions, 0 changer transitions 126/126 dead transitions. [2021-12-22 13:32:52,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 895 flow [2021-12-22 13:32:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:32:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-22 13:32:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1163 transitions. [2021-12-22 13:32:52,178 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.852014652014652 [2021-12-22 13:32:52,178 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1163 transitions. [2021-12-22 13:32:52,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1163 transitions. [2021-12-22 13:32:52,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:52,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1163 transitions. [2021-12-22 13:32:52,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.53333333333333) internal successors, (1163), 15 states have internal predecessors, (1163), 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) [2021-12-22 13:32:52,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 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) [2021-12-22 13:32:52,185 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 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) [2021-12-22 13:32:52,185 INFO L186 Difference]: Start difference. First operand has 131 places, 119 transitions, 722 flow. Second operand 15 states and 1163 transitions. [2021-12-22 13:32:52,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 895 flow [2021-12-22 13:32:52,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 126 transitions, 711 flow, removed 64 selfloop flow, removed 18 redundant places. [2021-12-22 13:32:52,200 INFO L242 Difference]: Finished difference. Result has 118 places, 0 transitions, 0 flow [2021-12-22 13:32:52,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=118, PETRI_TRANSITIONS=0} [2021-12-22 13:32:52,201 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 35 predicate places. [2021-12-22 13:32:52,201 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 0 transitions, 0 flow [2021-12-22 13:32:52,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2021-12-22 13:32:52,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-22 13:32:52,204 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-22 13:32:52,204 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-22 13:32:52,204 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-22 13:32:52,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:32:52,207 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:32:52,208 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-22 13:32:52,208 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:32:52,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:32:52 BasicIcfg [2021-12-22 13:32:52,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:32:52,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:32:52,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:32:52,211 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:32:52,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:32:49" (3/4) ... [2021-12-22 13:32:52,213 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 13:32:52,217 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-22 13:32:52,217 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-22 13:32:52,218 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-22 13:32:52,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-22 13:32:52,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-22 13:32:52,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 13:32:52,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 13:32:52,238 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 13:32:52,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:32:52,239 INFO L158 Benchmark]: Toolchain (without parser) took 3814.18ms. Allocated memory was 104.9MB in the beginning and 182.5MB in the end (delta: 77.6MB). Free memory was 75.7MB in the beginning and 117.3MB in the end (delta: -41.6MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-12-22 13:32:52,239 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:32:52,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.26ms. Allocated memory is still 104.9MB. Free memory was 75.5MB in the beginning and 70.3MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 13:32:52,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.13ms. Allocated memory is still 104.9MB. Free memory was 70.3MB in the beginning and 68.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:32:52,240 INFO L158 Benchmark]: Boogie Preprocessor took 36.65ms. Allocated memory is still 104.9MB. Free memory was 68.2MB in the beginning and 66.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:32:52,240 INFO L158 Benchmark]: RCFGBuilder took 332.11ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 55.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 13:32:52,240 INFO L158 Benchmark]: TraceAbstraction took 2857.90ms. Allocated memory was 104.9MB in the beginning and 182.5MB in the end (delta: 77.6MB). Free memory was 54.3MB in the beginning and 120.5MB in the end (delta: -66.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-12-22 13:32:52,240 INFO L158 Benchmark]: Witness Printer took 27.34ms. Allocated memory is still 182.5MB. Free memory was 120.5MB in the beginning and 117.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:32:52,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 509.26ms. Allocated memory is still 104.9MB. Free memory was 75.5MB in the beginning and 70.3MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.13ms. Allocated memory is still 104.9MB. Free memory was 70.3MB in the beginning and 68.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.65ms. Allocated memory is still 104.9MB. Free memory was 68.2MB in the beginning and 66.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 332.11ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 55.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2857.90ms. Allocated memory was 104.9MB in the beginning and 182.5MB in the end (delta: 77.6MB). Free memory was 54.3MB in the beginning and 120.5MB in the end (delta: -66.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Witness Printer took 27.34ms. Allocated memory is still 182.5MB. Free memory was 120.5MB in the beginning and 117.3MB 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, 114 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: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 363 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 363 mSDsluCounter, 455 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 425 mSDsCounter, 110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 504 IncrementalHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 110 mSolverCounterUnsat, 123 mSDtfsCounter, 504 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=722occurred in iteration=7, InterpolantAutomatonStates: 91, 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, 0.6s InterpolantComputationTime, 471 NumberOfCodeBlocks, 471 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 463 ConstructedInterpolants, 0 QuantifiedInterpolants, 2049 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-22 13:32:52,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE