./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe012_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/safe012_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 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:26:09,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:26:09,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:26:09,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:26:09,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:26:09,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:26:09,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:26:09,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:26:09,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:26:09,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:26:09,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:26:09,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:26:09,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:26:09,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:26:09,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:26:09,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:26:09,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:26:09,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:26:09,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:26:09,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:26:09,982 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:26:09,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:26:09,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:26:09,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:26:09,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:26:09,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:26:09,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:26:09,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:26:09,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:26:09,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:26:09,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:26:09,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:26:09,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:26:09,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:26:09,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:26:09,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:26:09,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:26:09,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:26:10,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:26:10,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:26:10,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:26:10,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:26:10,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:26:10,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:26:10,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:26:10,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:26:10,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:26:10,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:26:10,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:26:10,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:26:10,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:26:10,034 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:26:10,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:26:10,035 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:26:10,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:26:10,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:26:10,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:26:10,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:26:10,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:26:10,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:26:10,036 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:26:10,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:26:10,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:26:10,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:26:10,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:26:10,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:26:10,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:26:10,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:26:10,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:26:10,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:26:10,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:26:10,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:26:10,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:26:10,040 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:26:10,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:26:10,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:26:10,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd [2022-07-22 21:26:10,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:26:10,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:26:10,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:26:10,257 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:26:10,258 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:26:10,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2022-07-22 21:26:10,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185385e10/9c591c7d98e243e9a782c59491c4cc6f/FLAG2ccaf59ea [2022-07-22 21:26:10,663 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:26:10,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2022-07-22 21:26:10,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185385e10/9c591c7d98e243e9a782c59491c4cc6f/FLAG2ccaf59ea [2022-07-22 21:26:11,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185385e10/9c591c7d98e243e9a782c59491c4cc6f [2022-07-22 21:26:11,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:26:11,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:26:11,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:26:11,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:26:11,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:26:11,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3ab83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11, skipping insertion in model container [2022-07-22 21:26:11,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:26:11,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:26:11,241 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/safe012_tso.i[945,958] [2022-07-22 21:26:11,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:26:11,342 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:26:11,356 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/safe012_tso.i[945,958] [2022-07-22 21:26:11,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:26:11,409 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:26:11,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11 WrapperNode [2022-07-22 21:26:11,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:26:11,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:26:11,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:26:11,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:26:11,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,457 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-07-22 21:26:11,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:26:11,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:26:11,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:26:11,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:26:11,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:26:11,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:26:11,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:26:11,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:26:11,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (1/1) ... [2022-07-22 21:26:11,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:26:11,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:26:11,511 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) [2022-07-22 21:26:11,515 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 [2022-07-22 21:26:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:26:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:26:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:26:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:26:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:26:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:26:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:26:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:26:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:26:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-22 21:26:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-22 21:26:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:26:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:26:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:26:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:26:11,539 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:26:11,653 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:26:11,654 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:26:11,787 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:26:11,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:26:11,792 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:26:11,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:26:11 BoogieIcfgContainer [2022-07-22 21:26:11,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:26:11,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:26:11,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:26:11,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:26:11,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:26:11" (1/3) ... [2022-07-22 21:26:11,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d8cd47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:26:11, skipping insertion in model container [2022-07-22 21:26:11,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:11" (2/3) ... [2022-07-22 21:26:11,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d8cd47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:26:11, skipping insertion in model container [2022-07-22 21:26:11,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:26:11" (3/3) ... [2022-07-22 21:26:11,799 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2022-07-22 21:26:11,802 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:26:11,809 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:26:11,812 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:26:11,812 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:26:11,844 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:26:11,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2022-07-22 21:26:11,929 INFO L129 PetriNetUnfolder]: 2/90 cut-off events. [2022-07-22 21:26:11,929 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:26:11,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-22 21:26:11,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2022-07-22 21:26:11,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2022-07-22 21:26:11,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:26:11,952 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3f9eae10, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@35e554bb [2022-07-22 21:26:11,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:26:11,969 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2022-07-22 21:26:11,969 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:26:11,969 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:11,970 INFO L200 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] [2022-07-22 21:26:11,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1681563862, now seen corresponding path program 1 times [2022-07-22 21:26:11,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:11,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384632489] [2022-07-22 21:26:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:11,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:12,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:12,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384632489] [2022-07-22 21:26:12,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384632489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:12,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:12,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:26:12,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843859807] [2022-07-22 21:26:12,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:12,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:26:12,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:26:12,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:26:12,431 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-07-22 21:26:12,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2022-07-22 21:26:12,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:12,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-07-22 21:26:12,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:12,607 INFO L129 PetriNetUnfolder]: 54/231 cut-off events. [2022-07-22 21:26:12,607 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-22 21:26:12,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 231 events. 54/231 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 841 event pairs, 21 based on Foata normal form. 8/231 useless extension candidates. Maximal degree in co-relation 331. Up to 67 conditions per place. [2022-07-22 21:26:12,619 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 14 selfloop transitions, 5 changer transitions 22/101 dead transitions. [2022-07-22 21:26:12,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 299 flow [2022-07-22 21:26:12,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:26:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:26:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 711 transitions. [2022-07-22 21:26:12,636 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2022-07-22 21:26:12,637 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 711 transitions. [2022-07-22 21:26:12,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 711 transitions. [2022-07-22 21:26:12,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:12,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 711 transitions. [2022-07-22 21:26:12,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 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) [2022-07-22 21:26:12,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-07-22 21:26:12,650 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-07-22 21:26:12,652 INFO L186 Difference]: Start difference. First operand has 85 places, 76 transitions, 161 flow. Second operand 9 states and 711 transitions. [2022-07-22 21:26:12,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 299 flow [2022-07-22 21:26:12,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 101 transitions, 294 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:26:12,657 INFO L242 Difference]: Finished difference. Result has 97 places, 77 transitions, 205 flow [2022-07-22 21:26:12,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=205, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2022-07-22 21:26:12,661 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2022-07-22 21:26:12,661 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 205 flow [2022-07-22 21:26:12,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2022-07-22 21:26:12,662 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:12,662 INFO L200 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] [2022-07-22 21:26:12,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:26:12,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:12,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:12,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1344051029, now seen corresponding path program 1 times [2022-07-22 21:26:12,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:12,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628780593] [2022-07-22 21:26:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:12,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:12,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628780593] [2022-07-22 21:26:12,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628780593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:12,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:12,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:12,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764839843] [2022-07-22 21:26:12,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:12,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:12,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:12,814 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-22 21:26:12,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-07-22 21:26:12,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:12,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-22 21:26:12,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:13,090 INFO L129 PetriNetUnfolder]: 97/375 cut-off events. [2022-07-22 21:26:13,091 INFO L130 PetriNetUnfolder]: For 324/352 co-relation queries the response was YES. [2022-07-22 21:26:13,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 375 events. 97/375 cut-off events. For 324/352 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1737 event pairs, 7 based on Foata normal form. 8/375 useless extension candidates. Maximal degree in co-relation 763. Up to 53 conditions per place. [2022-07-22 21:26:13,105 INFO L132 encePairwiseOnDemand]: 81/93 looper letters, 29 selfloop transitions, 11 changer transitions 38/136 dead transitions. [2022-07-22 21:26:13,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 136 transitions, 621 flow [2022-07-22 21:26:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:26:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:26:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1305 transitions. [2022-07-22 21:26:13,108 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.825426944971537 [2022-07-22 21:26:13,109 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1305 transitions. [2022-07-22 21:26:13,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1305 transitions. [2022-07-22 21:26:13,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:13,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1305 transitions. [2022-07-22 21:26:13,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 76.76470588235294) internal successors, (1305), 17 states have internal predecessors, (1305), 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) [2022-07-22 21:26:13,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2022-07-22 21:26:13,115 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2022-07-22 21:26:13,115 INFO L186 Difference]: Start difference. First operand has 97 places, 77 transitions, 205 flow. Second operand 17 states and 1305 transitions. [2022-07-22 21:26:13,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 136 transitions, 621 flow [2022-07-22 21:26:13,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 576 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-07-22 21:26:13,122 INFO L242 Difference]: Finished difference. Result has 118 places, 82 transitions, 313 flow [2022-07-22 21:26:13,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=313, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2022-07-22 21:26:13,123 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 33 predicate places. [2022-07-22 21:26:13,123 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 313 flow [2022-07-22 21:26:13,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-07-22 21:26:13,124 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:13,124 INFO L200 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] [2022-07-22 21:26:13,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:26:13,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:13,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:13,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1976276855, now seen corresponding path program 1 times [2022-07-22 21:26:13,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:13,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307178881] [2022-07-22 21:26:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:13,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:13,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:13,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307178881] [2022-07-22 21:26:13,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307178881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:13,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:13,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:13,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108231596] [2022-07-22 21:26:13,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:13,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:13,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:13,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:13,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:13,232 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-07-22 21:26:13,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2022-07-22 21:26:13,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:13,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-07-22 21:26:13,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:13,327 INFO L129 PetriNetUnfolder]: 35/187 cut-off events. [2022-07-22 21:26:13,327 INFO L130 PetriNetUnfolder]: For 913/971 co-relation queries the response was YES. [2022-07-22 21:26:13,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 187 events. 35/187 cut-off events. For 913/971 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 583 event pairs, 5 based on Foata normal form. 8/190 useless extension candidates. Maximal degree in co-relation 598. Up to 43 conditions per place. [2022-07-22 21:26:13,329 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 19 selfloop transitions, 4 changer transitions 22/106 dead transitions. [2022-07-22 21:26:13,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 106 transitions, 636 flow [2022-07-22 21:26:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:26:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:26:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2022-07-22 21:26:13,331 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8351254480286738 [2022-07-22 21:26:13,331 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2022-07-22 21:26:13,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2022-07-22 21:26:13,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:13,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2022-07-22 21:26:13,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 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) [2022-07-22 21:26:13,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-07-22 21:26:13,335 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-07-22 21:26:13,335 INFO L186 Difference]: Start difference. First operand has 118 places, 82 transitions, 313 flow. Second operand 9 states and 699 transitions. [2022-07-22 21:26:13,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 106 transitions, 636 flow [2022-07-22 21:26:13,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 106 transitions, 544 flow, removed 42 selfloop flow, removed 10 redundant places. [2022-07-22 21:26:13,340 INFO L242 Difference]: Finished difference. Result has 111 places, 82 transitions, 304 flow [2022-07-22 21:26:13,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=304, PETRI_PLACES=111, PETRI_TRANSITIONS=82} [2022-07-22 21:26:13,341 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 26 predicate places. [2022-07-22 21:26:13,341 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 82 transitions, 304 flow [2022-07-22 21:26:13,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2022-07-22 21:26:13,342 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:13,342 INFO L200 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] [2022-07-22 21:26:13,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:26:13,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:13,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash -772166055, now seen corresponding path program 1 times [2022-07-22 21:26:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:13,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492050454] [2022-07-22 21:26:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:13,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:13,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:13,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492050454] [2022-07-22 21:26:13,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492050454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:13,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:13,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:26:13,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272938178] [2022-07-22 21:26:13,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:13,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:26:13,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:26:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:26:13,480 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-22 21:26:13,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 82 transitions, 304 flow. Second operand has 8 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 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) [2022-07-22 21:26:13,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:13,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-22 21:26:13,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:13,592 INFO L129 PetriNetUnfolder]: 33/175 cut-off events. [2022-07-22 21:26:13,592 INFO L130 PetriNetUnfolder]: For 602/763 co-relation queries the response was YES. [2022-07-22 21:26:13,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 175 events. 33/175 cut-off events. For 602/763 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 455 event pairs, 9 based on Foata normal form. 5/170 useless extension candidates. Maximal degree in co-relation 528. Up to 36 conditions per place. [2022-07-22 21:26:13,594 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 13 selfloop transitions, 4 changer transitions 30/104 dead transitions. [2022-07-22 21:26:13,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 622 flow [2022-07-22 21:26:13,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:26:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:26:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 762 transitions. [2022-07-22 21:26:13,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8193548387096774 [2022-07-22 21:26:13,596 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 762 transitions. [2022-07-22 21:26:13,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 762 transitions. [2022-07-22 21:26:13,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:13,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 762 transitions. [2022-07-22 21:26:13,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.2) internal successors, (762), 10 states have internal predecessors, (762), 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) [2022-07-22 21:26:13,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-07-22 21:26:13,602 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-07-22 21:26:13,602 INFO L186 Difference]: Start difference. First operand has 111 places, 82 transitions, 304 flow. Second operand 10 states and 762 transitions. [2022-07-22 21:26:13,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 622 flow [2022-07-22 21:26:13,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 556 flow, removed 29 selfloop flow, removed 9 redundant places. [2022-07-22 21:26:13,608 INFO L242 Difference]: Finished difference. Result has 113 places, 74 transitions, 242 flow [2022-07-22 21:26:13,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=113, PETRI_TRANSITIONS=74} [2022-07-22 21:26:13,610 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 28 predicate places. [2022-07-22 21:26:13,613 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 74 transitions, 242 flow [2022-07-22 21:26:13,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 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) [2022-07-22 21:26:13,615 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:13,615 INFO L200 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] [2022-07-22 21:26:13,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:26:13,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:13,616 INFO L85 PathProgramCache]: Analyzing trace with hash 321062132, now seen corresponding path program 1 times [2022-07-22 21:26:13,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:13,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669726549] [2022-07-22 21:26:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:13,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:13,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:13,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669726549] [2022-07-22 21:26:13,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669726549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:13,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:13,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:26:13,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729386912] [2022-07-22 21:26:13,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:13,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:26:13,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:13,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:26:13,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:26:13,738 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-22 21:26:13,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 74 transitions, 242 flow. Second operand has 8 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 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) [2022-07-22 21:26:13,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:13,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-22 21:26:13,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:13,865 INFO L129 PetriNetUnfolder]: 24/156 cut-off events. [2022-07-22 21:26:13,865 INFO L130 PetriNetUnfolder]: For 482/594 co-relation queries the response was YES. [2022-07-22 21:26:13,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 156 events. 24/156 cut-off events. For 482/594 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 427 event pairs, 5 based on Foata normal form. 4/156 useless extension candidates. Maximal degree in co-relation 422. Up to 25 conditions per place. [2022-07-22 21:26:13,867 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 12 selfloop transitions, 6 changer transitions 22/97 dead transitions. [2022-07-22 21:26:13,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 97 transitions, 528 flow [2022-07-22 21:26:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:26:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:26:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 834 transitions. [2022-07-22 21:26:13,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8152492668621701 [2022-07-22 21:26:13,869 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 834 transitions. [2022-07-22 21:26:13,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 834 transitions. [2022-07-22 21:26:13,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:13,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 834 transitions. [2022-07-22 21:26:13,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.81818181818181) internal successors, (834), 11 states have internal predecessors, (834), 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) [2022-07-22 21:26:13,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2022-07-22 21:26:13,874 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2022-07-22 21:26:13,874 INFO L186 Difference]: Start difference. First operand has 113 places, 74 transitions, 242 flow. Second operand 11 states and 834 transitions. [2022-07-22 21:26:13,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 97 transitions, 528 flow [2022-07-22 21:26:13,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 97 transitions, 432 flow, removed 32 selfloop flow, removed 17 redundant places. [2022-07-22 21:26:13,878 INFO L242 Difference]: Finished difference. Result has 107 places, 74 transitions, 228 flow [2022-07-22 21:26:13,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=74} [2022-07-22 21:26:13,880 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2022-07-22 21:26:13,880 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 74 transitions, 228 flow [2022-07-22 21:26:13,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 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) [2022-07-22 21:26:13,880 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:13,881 INFO L200 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] [2022-07-22 21:26:13,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:26:13,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:13,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1979615423, now seen corresponding path program 1 times [2022-07-22 21:26:13,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:13,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757371441] [2022-07-22 21:26:13,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:13,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:13,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:13,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757371441] [2022-07-22 21:26:13,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757371441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:13,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:13,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:26:13,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76367749] [2022-07-22 21:26:13,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:13,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:26:13,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:13,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:26:13,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:26:13,991 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-07-22 21:26:13,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 74 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2022-07-22 21:26:13,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:13,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-07-22 21:26:13,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:14,077 INFO L129 PetriNetUnfolder]: 113/367 cut-off events. [2022-07-22 21:26:14,077 INFO L130 PetriNetUnfolder]: For 335/341 co-relation queries the response was YES. [2022-07-22 21:26:14,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 367 events. 113/367 cut-off events. For 335/341 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1748 event pairs, 14 based on Foata normal form. 8/360 useless extension candidates. Maximal degree in co-relation 751. Up to 90 conditions per place. [2022-07-22 21:26:14,079 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 14 selfloop transitions, 6 changer transitions 19/100 dead transitions. [2022-07-22 21:26:14,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 360 flow [2022-07-22 21:26:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:26:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:26:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 725 transitions. [2022-07-22 21:26:14,081 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8661887694145759 [2022-07-22 21:26:14,081 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 725 transitions. [2022-07-22 21:26:14,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 725 transitions. [2022-07-22 21:26:14,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:14,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 725 transitions. [2022-07-22 21:26:14,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.55555555555556) internal successors, (725), 9 states have internal predecessors, (725), 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) [2022-07-22 21:26:14,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-07-22 21:26:14,085 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-07-22 21:26:14,085 INFO L186 Difference]: Start difference. First operand has 107 places, 74 transitions, 228 flow. Second operand 9 states and 725 transitions. [2022-07-22 21:26:14,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 360 flow [2022-07-22 21:26:14,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 330 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-07-22 21:26:14,088 INFO L242 Difference]: Finished difference. Result has 104 places, 77 transitions, 254 flow [2022-07-22 21:26:14,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=104, PETRI_TRANSITIONS=77} [2022-07-22 21:26:14,088 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 19 predicate places. [2022-07-22 21:26:14,088 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 77 transitions, 254 flow [2022-07-22 21:26:14,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2022-07-22 21:26:14,089 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:14,089 INFO L200 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, 1] [2022-07-22 21:26:14,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:26:14,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash -215483288, now seen corresponding path program 1 times [2022-07-22 21:26:14,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:14,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112870779] [2022-07-22 21:26:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:14,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:14,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112870779] [2022-07-22 21:26:14,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112870779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:14,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:14,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747115750] [2022-07-22 21:26:14,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:14,168 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-07-22 21:26:14,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 77 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2022-07-22 21:26:14,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:14,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-07-22 21:26:14,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:14,256 INFO L129 PetriNetUnfolder]: 60/248 cut-off events. [2022-07-22 21:26:14,257 INFO L130 PetriNetUnfolder]: For 389/409 co-relation queries the response was YES. [2022-07-22 21:26:14,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 248 events. 60/248 cut-off events. For 389/409 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 906 event pairs, 4 based on Foata normal form. 9/253 useless extension candidates. Maximal degree in co-relation 676. Up to 79 conditions per place. [2022-07-22 21:26:14,258 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 14 selfloop transitions, 9 changer transitions 19/103 dead transitions. [2022-07-22 21:26:14,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 519 flow [2022-07-22 21:26:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:26:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:26:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 804 transitions. [2022-07-22 21:26:14,261 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.864516129032258 [2022-07-22 21:26:14,261 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 804 transitions. [2022-07-22 21:26:14,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 804 transitions. [2022-07-22 21:26:14,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:14,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 804 transitions. [2022-07-22 21:26:14,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.4) internal successors, (804), 10 states have internal predecessors, (804), 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) [2022-07-22 21:26:14,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-07-22 21:26:14,264 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-07-22 21:26:14,264 INFO L186 Difference]: Start difference. First operand has 104 places, 77 transitions, 254 flow. Second operand 10 states and 804 transitions. [2022-07-22 21:26:14,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 519 flow [2022-07-22 21:26:14,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 495 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-07-22 21:26:14,267 INFO L242 Difference]: Finished difference. Result has 110 places, 80 transitions, 322 flow [2022-07-22 21:26:14,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=322, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2022-07-22 21:26:14,268 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 25 predicate places. [2022-07-22 21:26:14,268 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 322 flow [2022-07-22 21:26:14,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2022-07-22 21:26:14,269 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:14,269 INFO L200 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, 1, 1] [2022-07-22 21:26:14,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:26:14,269 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2147456695, now seen corresponding path program 1 times [2022-07-22 21:26:14,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:14,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010888028] [2022-07-22 21:26:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:14,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:14,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010888028] [2022-07-22 21:26:14,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010888028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:14,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:14,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:26:14,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338936946] [2022-07-22 21:26:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:14,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:26:14,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:14,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:26:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:26:14,352 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-07-22 21:26:14,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2022-07-22 21:26:14,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:14,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-07-22 21:26:14,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:14,445 INFO L129 PetriNetUnfolder]: 17/132 cut-off events. [2022-07-22 21:26:14,445 INFO L130 PetriNetUnfolder]: For 407/422 co-relation queries the response was YES. [2022-07-22 21:26:14,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 132 events. 17/132 cut-off events. For 407/422 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 260 event pairs, 0 based on Foata normal form. 10/142 useless extension candidates. Maximal degree in co-relation 380. Up to 31 conditions per place. [2022-07-22 21:26:14,446 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 8 selfloop transitions, 12 changer transitions 13/94 dead transitions. [2022-07-22 21:26:14,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 94 transitions, 518 flow [2022-07-22 21:26:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:26:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:26:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 871 transitions. [2022-07-22 21:26:14,448 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8514173998044966 [2022-07-22 21:26:14,448 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 871 transitions. [2022-07-22 21:26:14,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 871 transitions. [2022-07-22 21:26:14,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:14,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 871 transitions. [2022-07-22 21:26:14,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.18181818181819) internal successors, (871), 11 states have internal predecessors, (871), 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) [2022-07-22 21:26:14,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2022-07-22 21:26:14,452 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2022-07-22 21:26:14,452 INFO L186 Difference]: Start difference. First operand has 110 places, 80 transitions, 322 flow. Second operand 11 states and 871 transitions. [2022-07-22 21:26:14,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 94 transitions, 518 flow [2022-07-22 21:26:14,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 94 transitions, 393 flow, removed 49 selfloop flow, removed 15 redundant places. [2022-07-22 21:26:14,455 INFO L242 Difference]: Finished difference. Result has 107 places, 80 transitions, 282 flow [2022-07-22 21:26:14,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2022-07-22 21:26:14,457 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2022-07-22 21:26:14,457 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 282 flow [2022-07-22 21:26:14,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2022-07-22 21:26:14,458 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:14,458 INFO L200 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, 1, 1, 1, 1] [2022-07-22 21:26:14,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:26:14,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1391054992, now seen corresponding path program 1 times [2022-07-22 21:26:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:14,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781818456] [2022-07-22 21:26:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:14,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:14,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:14,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781818456] [2022-07-22 21:26:14,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781818456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:14,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:14,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80601775] [2022-07-22 21:26:14,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:14,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:14,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:14,549 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-07-22 21:26:14,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 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) [2022-07-22 21:26:14,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:14,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-07-22 21:26:14,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:14,626 INFO L129 PetriNetUnfolder]: 6/94 cut-off events. [2022-07-22 21:26:14,626 INFO L130 PetriNetUnfolder]: For 83/89 co-relation queries the response was YES. [2022-07-22 21:26:14,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 94 events. 6/94 cut-off events. For 83/89 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 173. Up to 11 conditions per place. [2022-07-22 21:26:14,627 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-07-22 21:26:14,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 79 transitions, 316 flow [2022-07-22 21:26:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:26:14,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:26:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 594 transitions. [2022-07-22 21:26:14,628 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7983870967741935 [2022-07-22 21:26:14,628 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 594 transitions. [2022-07-22 21:26:14,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 594 transitions. [2022-07-22 21:26:14,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:14,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 594 transitions. [2022-07-22 21:26:14,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.25) internal successors, (594), 8 states have internal predecessors, (594), 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) [2022-07-22 21:26:14,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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) [2022-07-22 21:26:14,631 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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) [2022-07-22 21:26:14,632 INFO L186 Difference]: Start difference. First operand has 107 places, 80 transitions, 282 flow. Second operand 8 states and 594 transitions. [2022-07-22 21:26:14,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 79 transitions, 316 flow [2022-07-22 21:26:14,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 79 transitions, 234 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-07-22 21:26:14,633 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-07-22 21:26:14,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-07-22 21:26:14,634 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2022-07-22 21:26:14,634 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-07-22 21:26:14,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 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) [2022-07-22 21:26:14,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-22 21:26:14,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-22 21:26:14,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-22 21:26:14,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-22 21:26:14,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:26:14,639 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:14,644 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:26:14,644 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:26:14,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:26:14 BasicIcfg [2022-07-22 21:26:14,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:26:14,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:26:14,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:26:14,657 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:26:14,658 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:26:11" (3/4) ... [2022-07-22 21:26:14,660 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:26:14,664 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-22 21:26:14,664 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-22 21:26:14,664 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-22 21:26:14,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-22 21:26:14,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:26:14,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:26:14,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:26:14,686 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:26:14,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:26:14,687 INFO L158 Benchmark]: Toolchain (without parser) took 3634.42ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 55.3MB in the beginning and 95.5MB in the end (delta: -40.1MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2022-07-22 21:26:14,687 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 90.2MB. Free memory was 59.7MB in the beginning and 59.7MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:26:14,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.68ms. Allocated memory is still 90.2MB. Free memory was 55.1MB in the beginning and 56.5MB in the end (delta: -1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 21:26:14,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.30ms. Allocated memory is still 90.2MB. Free memory was 56.1MB in the beginning and 54.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:26:14,687 INFO L158 Benchmark]: Boogie Preprocessor took 23.73ms. Allocated memory is still 90.2MB. Free memory was 54.4MB in the beginning and 53.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:26:14,687 INFO L158 Benchmark]: RCFGBuilder took 311.73ms. Allocated memory is still 90.2MB. Free memory was 52.7MB in the beginning and 40.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 21:26:14,688 INFO L158 Benchmark]: TraceAbstraction took 2862.58ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 40.1MB in the beginning and 98.6MB in the end (delta: -58.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:26:14,688 INFO L158 Benchmark]: Witness Printer took 28.84ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 95.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:26:14,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 90.2MB. Free memory was 59.7MB in the beginning and 59.7MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.68ms. Allocated memory is still 90.2MB. Free memory was 55.1MB in the beginning and 56.5MB in the end (delta: -1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.30ms. Allocated memory is still 90.2MB. Free memory was 56.1MB in the beginning and 54.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.73ms. Allocated memory is still 90.2MB. Free memory was 54.4MB in the beginning and 53.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.73ms. Allocated memory is still 90.2MB. Free memory was 52.7MB in the beginning and 40.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2862.58ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 40.1MB in the beginning and 98.6MB in the end (delta: -58.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 28.84ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 95.5MB 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: - 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, 116 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: 2.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 308 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 308 mSDsluCounter, 466 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 446 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 469 IncrementalHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 116 mSDtfsCounter, 469 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=322occurred in iteration=7, InterpolantAutomatonStates: 94, 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, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 546 ConstructedInterpolants, 0 QuantifiedInterpolants, 2284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2022-07-22 21:26:14,714 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