./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:59:57,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:59:57,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:59:57,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:59:57,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:59:57,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:59:57,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:59:57,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:59:57,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:59:57,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:59:57,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:59:57,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:59:57,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:59:57,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:59:57,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:59:57,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:59:57,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:59:57,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:59:57,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:59:57,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:59:57,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:59:57,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:59:57,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:59:57,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:59:57,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:59:57,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:59:57,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:59:57,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:59:57,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:59:57,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:59:57,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:59:57,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:59:58,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:59:58,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:59:58,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:59:58,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:59:58,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:59:58,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:59:58,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:59:58,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:59:58,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:59:58,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:59:58,036 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:59:58,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:59:58,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:59:58,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:59:58,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:59:58,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:59:58,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:59:58,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:59:58,040 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:59:58,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:59:58,041 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:59:58,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:59:58,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:59:58,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:59:58,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:59:58,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:59:58,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:59:58,042 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:59:58,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:59:58,043 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:59:58,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:59:58,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:59:58,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:59:58,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:59:58,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:58,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:59:58,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:59:58,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:59:58,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:59:58,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:59:58,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:59:58,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:59:58,045 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:59:58,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:59:58,046 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:59:58,046 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:59:58,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:59:58,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:59:58,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:59:58,377 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:59:58,378 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:59:58,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-09-01 09:59:59,548 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:59:59,844 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:59:59,845 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-09-01 09:59:59,871 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b14a5e08/5cfe144f5f5d4302bb9e398f8aed6599/FLAG92a7759cb [2023-09-01 09:59:59,896 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b14a5e08/5cfe144f5f5d4302bb9e398f8aed6599 [2023-09-01 09:59:59,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:59:59,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:59:59,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:59,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:59:59,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:59:59,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:59" (1/1) ... [2023-09-01 09:59:59,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d33f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:59, skipping insertion in model container [2023-09-01 09:59:59,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:59" (1/1) ... [2023-09-01 09:59:59,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:59:59,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:00:00,138 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 10:00:00,509 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2023-09-01 10:00:00,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:00:00,557 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:00:00,567 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 10:00:00,602 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2023-09-01 10:00:00,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:00:00,744 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 10:00:00,745 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 10:00:00,745 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 10:00:00,751 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:00:00,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00 WrapperNode [2023-09-01 10:00:00,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:00:00,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:00:00,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:00:00,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:00:00,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,805 INFO L138 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-09-01 10:00:00,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:00:00,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:00:00,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:00:00,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:00:00,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,836 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:00:00,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:00:00,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:00:00,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:00:00,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (1/1) ... [2023-09-01 10:00:00,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:00:00,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:00:00,890 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) [2023-09-01 10:00:00,907 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 [2023-09-01 10:00:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 10:00:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:00:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 10:00:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:00:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:00:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 10:00:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:00:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:00:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-09-01 10:00:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-09-01 10:00:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:00:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:00:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:00:00,927 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:00:01,237 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:00:01,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:00:01,436 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:00:01,453 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:00:01,454 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 10:00:01,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:00:01 BoogieIcfgContainer [2023-09-01 10:00:01,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:00:01,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:00:01,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:00:01,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:00:01,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:59:59" (1/3) ... [2023-09-01 10:00:01,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702d722c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:00:01, skipping insertion in model container [2023-09-01 10:00:01,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:00" (2/3) ... [2023-09-01 10:00:01,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702d722c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:00:01, skipping insertion in model container [2023-09-01 10:00:01,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:00:01" (3/3) ... [2023-09-01 10:00:01,464 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-09-01 10:00:01,472 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:00:01,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:00:01,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 10:00:01,481 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:00:01,536 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:00:01,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 166 transitions, 348 flow [2023-09-01 10:00:01,639 INFO L130 PetriNetUnfolder]: 10/204 cut-off events. [2023-09-01 10:00:01,640 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:00:01,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 204 events. 10/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 309 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-09-01 10:00:01,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 166 transitions, 348 flow [2023-09-01 10:00:01,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 154 transitions, 320 flow [2023-09-01 10:00:01,653 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:00:01,661 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 154 transitions, 320 flow [2023-09-01 10:00:01,664 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 154 transitions, 320 flow [2023-09-01 10:00:01,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 154 transitions, 320 flow [2023-09-01 10:00:01,700 INFO L130 PetriNetUnfolder]: 7/185 cut-off events. [2023-09-01 10:00:01,703 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:00:01,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 7/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 259 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2023-09-01 10:00:01,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 1584 [2023-09-01 10:00:12,576 INFO L134 LiptonReduction]: Checked pairs total: 3015 [2023-09-01 10:00:12,577 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-09-01 10:00:12,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 10:00:12,595 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@559db4eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:00:12,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-09-01 10:00:12,598 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-09-01 10:00:12,598 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:00:12,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:12,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 10:00:12,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:12,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:12,604 INFO L85 PathProgramCache]: Analyzing trace with hash 588, now seen corresponding path program 1 times [2023-09-01 10:00:12,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:12,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732971768] [2023-09-01 10:00:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:12,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:12,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732971768] [2023-09-01 10:00:12,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732971768] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:12,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:12,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 10:00:12,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892935201] [2023-09-01 10:00:12,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:12,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 10:00:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 10:00:12,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 10:00:12,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 334 [2023-09-01 10:00:12,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 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) [2023-09-01 10:00:12,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:12,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 334 [2023-09-01 10:00:12,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:12,925 INFO L130 PetriNetUnfolder]: 169/315 cut-off events. [2023-09-01 10:00:12,925 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 10:00:12,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 315 events. 169/315 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1202 event pairs, 168 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 567. Up to 312 conditions per place. [2023-09-01 10:00:12,929 INFO L137 encePairwiseOnDemand]: 331/334 looper letters, 24 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-09-01 10:00:12,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 110 flow [2023-09-01 10:00:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 10:00:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 10:00:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 323 transitions. [2023-09-01 10:00:12,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48353293413173654 [2023-09-01 10:00:12,944 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 323 transitions. [2023-09-01 10:00:12,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 323 transitions. [2023-09-01 10:00:12,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:12,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 323 transitions. [2023-09-01 10:00:12,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 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) [2023-09-01 10:00:12,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 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) [2023-09-01 10:00:12,955 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 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) [2023-09-01 10:00:12,957 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 68 flow. Second operand 2 states and 323 transitions. [2023-09-01 10:00:12,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 110 flow [2023-09-01 10:00:12,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 10:00:12,961 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 54 flow [2023-09-01 10:00:12,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-09-01 10:00:12,966 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-09-01 10:00:12,966 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 54 flow [2023-09-01 10:00:12,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 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) [2023-09-01 10:00:12,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:12,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 10:00:12,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:00:12,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:12,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash 18058040, now seen corresponding path program 1 times [2023-09-01 10:00:12,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:12,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128420886] [2023-09-01 10:00:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:13,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:13,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128420886] [2023-09-01 10:00:13,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128420886] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:13,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:13,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:00:13,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922414616] [2023-09-01 10:00:13,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:13,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:13,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:13,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:13,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 334 [2023-09-01 10:00:13,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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) [2023-09-01 10:00:13,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:13,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 334 [2023-09-01 10:00:13,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:13,762 INFO L130 PetriNetUnfolder]: 218/420 cut-off events. [2023-09-01 10:00:13,762 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:00:13,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 420 events. 218/420 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1895 event pairs, 112 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 828. Up to 328 conditions per place. [2023-09-01 10:00:13,766 INFO L137 encePairwiseOnDemand]: 327/334 looper letters, 26 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-09-01 10:00:13,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 134 flow [2023-09-01 10:00:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-09-01 10:00:13,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341317365269461 [2023-09-01 10:00:13,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-09-01 10:00:13,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-09-01 10:00:13,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:13,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-09-01 10:00:13,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2023-09-01 10:00:13,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 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) [2023-09-01 10:00:13,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 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) [2023-09-01 10:00:13,775 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 54 flow. Second operand 3 states and 435 transitions. [2023-09-01 10:00:13,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 134 flow [2023-09-01 10:00:13,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 10:00:13,776 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 90 flow [2023-09-01 10:00:13,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-09-01 10:00:13,777 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2023-09-01 10:00:13,777 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 90 flow [2023-09-01 10:00:13,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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) [2023-09-01 10:00:13,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:13,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 10:00:13,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:00:13,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:13,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:13,779 INFO L85 PathProgramCache]: Analyzing trace with hash 559797358, now seen corresponding path program 1 times [2023-09-01 10:00:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:13,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140107647] [2023-09-01 10:00:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:13,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:13,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140107647] [2023-09-01 10:00:13,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140107647] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:13,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:13,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:00:13,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234169200] [2023-09-01 10:00:13,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:13,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:13,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:13,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:14,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 334 [2023-09-01 10:00:14,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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) [2023-09-01 10:00:14,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:14,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 334 [2023-09-01 10:00:14,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:14,158 INFO L130 PetriNetUnfolder]: 291/536 cut-off events. [2023-09-01 10:00:14,159 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2023-09-01 10:00:14,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 536 events. 291/536 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2400 event pairs, 135 based on Foata normal form. 32/566 useless extension candidates. Maximal degree in co-relation 1391. Up to 417 conditions per place. [2023-09-01 10:00:14,162 INFO L137 encePairwiseOnDemand]: 327/334 looper letters, 30 selfloop transitions, 9 changer transitions 2/41 dead transitions. [2023-09-01 10:00:14,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 218 flow [2023-09-01 10:00:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:14,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-09-01 10:00:14,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351297405189621 [2023-09-01 10:00:14,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-09-01 10:00:14,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-09-01 10:00:14,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:14,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-09-01 10:00:14,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-09-01 10:00:14,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 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) [2023-09-01 10:00:14,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 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) [2023-09-01 10:00:14,169 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 90 flow. Second operand 3 states and 436 transitions. [2023-09-01 10:00:14,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 218 flow [2023-09-01 10:00:14,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:14,172 INFO L231 Difference]: Finished difference. Result has 32 places, 35 transitions, 155 flow [2023-09-01 10:00:14,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=32, PETRI_TRANSITIONS=35} [2023-09-01 10:00:14,173 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-09-01 10:00:14,173 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 155 flow [2023-09-01 10:00:14,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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) [2023-09-01 10:00:14,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:14,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:14,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:00:14,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:14,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1429961496, now seen corresponding path program 1 times [2023-09-01 10:00:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:14,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588143657] [2023-09-01 10:00:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:14,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:14,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588143657] [2023-09-01 10:00:14,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588143657] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:14,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:14,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:00:14,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423353796] [2023-09-01 10:00:14,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:14,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:14,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:14,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:14,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 334 [2023-09-01 10:00:14,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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) [2023-09-01 10:00:14,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:14,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 334 [2023-09-01 10:00:14,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:14,320 INFO L130 PetriNetUnfolder]: 72/144 cut-off events. [2023-09-01 10:00:14,320 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-09-01 10:00:14,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 144 events. 72/144 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 420 event pairs, 15 based on Foata normal form. 16/159 useless extension candidates. Maximal degree in co-relation 409. Up to 104 conditions per place. [2023-09-01 10:00:14,321 INFO L137 encePairwiseOnDemand]: 332/334 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 10:00:14,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 132 flow [2023-09-01 10:00:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-09-01 10:00:14,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530938123752495 [2023-09-01 10:00:14,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-09-01 10:00:14,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-09-01 10:00:14,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:14,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-09-01 10:00:14,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:14,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 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) [2023-09-01 10:00:14,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 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) [2023-09-01 10:00:14,328 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 155 flow. Second operand 3 states and 454 transitions. [2023-09-01 10:00:14,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 132 flow [2023-09-01 10:00:14,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:14,330 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 50 flow [2023-09-01 10:00:14,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-09-01 10:00:14,331 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2023-09-01 10:00:14,331 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 50 flow [2023-09-01 10:00:14,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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) [2023-09-01 10:00:14,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:14,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:14,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:00:14,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:14,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash -48803317, now seen corresponding path program 1 times [2023-09-01 10:00:14,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:14,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090201832] [2023-09-01 10:00:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:14,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:15,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:15,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090201832] [2023-09-01 10:00:15,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090201832] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:15,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:15,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 10:00:15,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243833486] [2023-09-01 10:00:15,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 10:00:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 10:00:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 10:00:15,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 334 [2023-09-01 10:00:15,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 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) [2023-09-01 10:00:15,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:15,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 334 [2023-09-01 10:00:15,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:15,479 INFO L130 PetriNetUnfolder]: 108/232 cut-off events. [2023-09-01 10:00:15,479 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-09-01 10:00:15,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 232 events. 108/232 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 862 event pairs, 10 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 582. Up to 91 conditions per place. [2023-09-01 10:00:15,481 INFO L137 encePairwiseOnDemand]: 325/334 looper letters, 33 selfloop transitions, 18 changer transitions 0/51 dead transitions. [2023-09-01 10:00:15,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 51 transitions, 247 flow [2023-09-01 10:00:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 10:00:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 10:00:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 941 transitions. [2023-09-01 10:00:15,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402480752780154 [2023-09-01 10:00:15,485 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 941 transitions. [2023-09-01 10:00:15,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 941 transitions. [2023-09-01 10:00:15,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:15,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 941 transitions. [2023-09-01 10:00:15,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.42857142857142) internal successors, (941), 7 states have internal predecessors, (941), 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) [2023-09-01 10:00:15,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 334.0) internal successors, (2672), 8 states have internal predecessors, (2672), 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) [2023-09-01 10:00:15,493 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 334.0) internal successors, (2672), 8 states have internal predecessors, (2672), 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) [2023-09-01 10:00:15,493 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 50 flow. Second operand 7 states and 941 transitions. [2023-09-01 10:00:15,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 51 transitions, 247 flow [2023-09-01 10:00:15,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:15,495 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 161 flow [2023-09-01 10:00:15,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-09-01 10:00:15,496 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-09-01 10:00:15,496 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 161 flow [2023-09-01 10:00:15,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 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) [2023-09-01 10:00:15,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:15,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:15,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:00:15,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:15,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1052545929, now seen corresponding path program 2 times [2023-09-01 10:00:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:15,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898597922] [2023-09-01 10:00:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:15,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898597922] [2023-09-01 10:00:16,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898597922] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:16,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:16,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 10:00:16,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147659367] [2023-09-01 10:00:16,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:16,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 10:00:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 10:00:16,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 10:00:16,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 334 [2023-09-01 10:00:16,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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) [2023-09-01 10:00:16,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:16,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 334 [2023-09-01 10:00:16,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:16,722 INFO L130 PetriNetUnfolder]: 117/260 cut-off events. [2023-09-01 10:00:16,723 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2023-09-01 10:00:16,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 260 events. 117/260 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1010 event pairs, 39 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 822. Up to 106 conditions per place. [2023-09-01 10:00:16,725 INFO L137 encePairwiseOnDemand]: 326/334 looper letters, 35 selfloop transitions, 19 changer transitions 0/54 dead transitions. [2023-09-01 10:00:16,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 373 flow [2023-09-01 10:00:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 10:00:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 10:00:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 814 transitions. [2023-09-01 10:00:16,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406187624750499 [2023-09-01 10:00:16,728 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 814 transitions. [2023-09-01 10:00:16,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 814 transitions. [2023-09-01 10:00:16,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:16,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 814 transitions. [2023-09-01 10:00:16,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 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) [2023-09-01 10:00:16,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 334.0) internal successors, (2338), 7 states have internal predecessors, (2338), 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) [2023-09-01 10:00:16,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 334.0) internal successors, (2338), 7 states have internal predecessors, (2338), 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) [2023-09-01 10:00:16,734 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 161 flow. Second operand 6 states and 814 transitions. [2023-09-01 10:00:16,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 373 flow [2023-09-01 10:00:16,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 356 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:16,737 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 290 flow [2023-09-01 10:00:16,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=290, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-09-01 10:00:16,738 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-09-01 10:00:16,738 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 290 flow [2023-09-01 10:00:16,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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) [2023-09-01 10:00:16,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:16,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:16,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:00:16,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:16,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1052545944, now seen corresponding path program 1 times [2023-09-01 10:00:16,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:16,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680115367] [2023-09-01 10:00:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:16,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:18,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:18,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680115367] [2023-09-01 10:00:18,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680115367] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:18,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:18,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 10:00:18,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989494040] [2023-09-01 10:00:18,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:18,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 10:00:18,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:18,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 10:00:18,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-09-01 10:00:19,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 334 [2023-09-01 10:00:19,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 290 flow. Second operand has 11 states, 11 states have (on average 122.54545454545455) internal successors, (1348), 11 states have internal predecessors, (1348), 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) [2023-09-01 10:00:19,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:19,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 334 [2023-09-01 10:00:19,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:19,757 INFO L130 PetriNetUnfolder]: 132/307 cut-off events. [2023-09-01 10:00:19,758 INFO L131 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2023-09-01 10:00:19,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 307 events. 132/307 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1354 event pairs, 9 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 1103. Up to 104 conditions per place. [2023-09-01 10:00:19,760 INFO L137 encePairwiseOnDemand]: 324/334 looper letters, 68 selfloop transitions, 26 changer transitions 13/107 dead transitions. [2023-09-01 10:00:19,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 107 transitions, 906 flow [2023-09-01 10:00:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1278 transitions. [2023-09-01 10:00:19,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38263473053892216 [2023-09-01 10:00:19,764 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1278 transitions. [2023-09-01 10:00:19,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1278 transitions. [2023-09-01 10:00:19,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:19,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1278 transitions. [2023-09-01 10:00:19,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 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) [2023-09-01 10:00:19,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 334.0) internal successors, (3674), 11 states have internal predecessors, (3674), 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) [2023-09-01 10:00:19,773 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 334.0) internal successors, (3674), 11 states have internal predecessors, (3674), 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) [2023-09-01 10:00:19,773 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 290 flow. Second operand 10 states and 1278 transitions. [2023-09-01 10:00:19,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 107 transitions, 906 flow [2023-09-01 10:00:19,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 107 transitions, 879 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 10:00:19,778 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 534 flow [2023-09-01 10:00:19,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=534, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2023-09-01 10:00:19,779 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2023-09-01 10:00:19,779 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 534 flow [2023-09-01 10:00:19,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 122.54545454545455) internal successors, (1348), 11 states have internal predecessors, (1348), 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) [2023-09-01 10:00:19,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:19,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:19,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:00:19,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:19,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:19,781 INFO L85 PathProgramCache]: Analyzing trace with hash -943397196, now seen corresponding path program 2 times [2023-09-01 10:00:19,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:19,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215442142] [2023-09-01 10:00:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:19,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:21,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:21,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215442142] [2023-09-01 10:00:21,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215442142] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:21,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:21,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 10:00:21,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439517768] [2023-09-01 10:00:21,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:21,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 10:00:21,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:21,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 10:00:21,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-09-01 10:00:21,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 334 [2023-09-01 10:00:21,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 534 flow. Second operand has 11 states, 11 states have (on average 122.54545454545455) internal successors, (1348), 11 states have internal predecessors, (1348), 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) [2023-09-01 10:00:21,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:21,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 334 [2023-09-01 10:00:21,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:22,434 INFO L130 PetriNetUnfolder]: 149/348 cut-off events. [2023-09-01 10:00:22,434 INFO L131 PetriNetUnfolder]: For 1293/1293 co-relation queries the response was YES. [2023-09-01 10:00:22,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 348 events. 149/348 cut-off events. For 1293/1293 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1607 event pairs, 25 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 1609. Up to 189 conditions per place. [2023-09-01 10:00:22,437 INFO L137 encePairwiseOnDemand]: 325/334 looper letters, 60 selfloop transitions, 33 changer transitions 16/109 dead transitions. [2023-09-01 10:00:22,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 109 transitions, 1122 flow [2023-09-01 10:00:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1273 transitions. [2023-09-01 10:00:22,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3811377245508982 [2023-09-01 10:00:22,441 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1273 transitions. [2023-09-01 10:00:22,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1273 transitions. [2023-09-01 10:00:22,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:22,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1273 transitions. [2023-09-01 10:00:22,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 127.3) internal successors, (1273), 10 states have internal predecessors, (1273), 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) [2023-09-01 10:00:22,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 334.0) internal successors, (3674), 11 states have internal predecessors, (3674), 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) [2023-09-01 10:00:22,450 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 334.0) internal successors, (3674), 11 states have internal predecessors, (3674), 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) [2023-09-01 10:00:22,450 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 534 flow. Second operand 10 states and 1273 transitions. [2023-09-01 10:00:22,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 109 transitions, 1122 flow [2023-09-01 10:00:22,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 1092 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-09-01 10:00:22,457 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 776 flow [2023-09-01 10:00:22,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=776, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2023-09-01 10:00:22,459 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-09-01 10:00:22,459 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 776 flow [2023-09-01 10:00:22,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 122.54545454545455) internal successors, (1348), 11 states have internal predecessors, (1348), 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) [2023-09-01 10:00:22,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:22,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:22,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:00:22,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:22,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1145278948, now seen corresponding path program 3 times [2023-09-01 10:00:22,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:22,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410946313] [2023-09-01 10:00:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:23,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:23,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410946313] [2023-09-01 10:00:23,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410946313] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:23,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:23,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 10:00:23,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669421134] [2023-09-01 10:00:23,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:23,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 10:00:23,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 10:00:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-09-01 10:00:24,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 334 [2023-09-01 10:00:24,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 776 flow. Second operand has 11 states, 11 states have (on average 123.54545454545455) internal successors, (1359), 11 states have internal predecessors, (1359), 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) [2023-09-01 10:00:24,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:24,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 334 [2023-09-01 10:00:24,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:25,063 INFO L130 PetriNetUnfolder]: 156/390 cut-off events. [2023-09-01 10:00:25,063 INFO L131 PetriNetUnfolder]: For 1955/1955 co-relation queries the response was YES. [2023-09-01 10:00:25,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 390 events. 156/390 cut-off events. For 1955/1955 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1968 event pairs, 20 based on Foata normal form. 2/388 useless extension candidates. Maximal degree in co-relation 1972. Up to 124 conditions per place. [2023-09-01 10:00:25,071 INFO L137 encePairwiseOnDemand]: 324/334 looper letters, 83 selfloop transitions, 48 changer transitions 16/147 dead transitions. [2023-09-01 10:00:25,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 147 transitions, 1614 flow [2023-09-01 10:00:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 10:00:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 10:00:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1550 transitions. [2023-09-01 10:00:25,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38672654690618763 [2023-09-01 10:00:25,080 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1550 transitions. [2023-09-01 10:00:25,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1550 transitions. [2023-09-01 10:00:25,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:25,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1550 transitions. [2023-09-01 10:00:25,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.16666666666666) internal successors, (1550), 12 states have internal predecessors, (1550), 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) [2023-09-01 10:00:25,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 334.0) internal successors, (4342), 13 states have internal predecessors, (4342), 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) [2023-09-01 10:00:25,091 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 334.0) internal successors, (4342), 13 states have internal predecessors, (4342), 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) [2023-09-01 10:00:25,091 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 776 flow. Second operand 12 states and 1550 transitions. [2023-09-01 10:00:25,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 147 transitions, 1614 flow [2023-09-01 10:00:25,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 147 transitions, 1522 flow, removed 32 selfloop flow, removed 5 redundant places. [2023-09-01 10:00:25,107 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 1036 flow [2023-09-01 10:00:25,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1036, PETRI_PLACES=74, PETRI_TRANSITIONS=86} [2023-09-01 10:00:25,109 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-09-01 10:00:25,109 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 1036 flow [2023-09-01 10:00:25,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 123.54545454545455) internal successors, (1359), 11 states have internal predecessors, (1359), 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) [2023-09-01 10:00:25,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:25,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:25,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:00:25,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:25,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash -283674976, now seen corresponding path program 4 times [2023-09-01 10:00:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:25,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385665978] [2023-09-01 10:00:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:25,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:00:25,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:00:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:00:25,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:00:25,263 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:00:25,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-09-01 10:00:25,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-09-01 10:00:25,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-09-01 10:00:25,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-09-01 10:00:25,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-09-01 10:00:25,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-09-01 10:00:25,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-09-01 10:00:25,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-09-01 10:00:25,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:00:25,267 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1] [2023-09-01 10:00:25,272 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 10:00:25,272 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 10:00:25,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 10:00:25 BasicIcfg [2023-09-01 10:00:25,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 10:00:25,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 10:00:25,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 10:00:25,338 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 10:00:25,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:00:01" (3/4) ... [2023-09-01 10:00:25,340 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 10:00:25,407 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 10:00:25,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 10:00:25,407 INFO L158 Benchmark]: Toolchain (without parser) took 25508.17ms. Allocated memory was 75.5MB in the beginning and 316.7MB in the end (delta: 241.2MB). Free memory was 53.9MB in the beginning and 132.0MB in the end (delta: -78.1MB). Peak memory consumption was 163.4MB. Max. memory is 16.1GB. [2023-09-01 10:00:25,408 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 54.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 10:00:25,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 848.92ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 53.9MB in the beginning and 41.8MB in the end (delta: 12.0MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2023-09-01 10:00:25,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.86ms. Allocated memory is still 94.4MB. Free memory was 41.8MB in the beginning and 38.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 10:00:25,409 INFO L158 Benchmark]: Boogie Preprocessor took 35.53ms. Allocated memory is still 94.4MB. Free memory was 38.1MB in the beginning and 35.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 10:00:25,409 INFO L158 Benchmark]: RCFGBuilder took 612.61ms. Allocated memory is still 94.4MB. Free memory was 35.6MB in the beginning and 45.8MB in the end (delta: -10.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2023-09-01 10:00:25,409 INFO L158 Benchmark]: TraceAbstraction took 23878.41ms. Allocated memory was 94.4MB in the beginning and 316.7MB in the end (delta: 222.3MB). Free memory was 44.6MB in the beginning and 139.3MB in the end (delta: -94.7MB). Peak memory consumption was 126.6MB. Max. memory is 16.1GB. [2023-09-01 10:00:25,410 INFO L158 Benchmark]: Witness Printer took 69.65ms. Allocated memory is still 316.7MB. Free memory was 139.3MB in the beginning and 132.0MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-09-01 10:00:25,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 54.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 848.92ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 53.9MB in the beginning and 41.8MB in the end (delta: 12.0MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.86ms. Allocated memory is still 94.4MB. Free memory was 41.8MB in the beginning and 38.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.53ms. Allocated memory is still 94.4MB. Free memory was 38.1MB in the beginning and 35.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 612.61ms. Allocated memory is still 94.4MB. Free memory was 35.6MB in the beginning and 45.8MB in the end (delta: -10.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * TraceAbstraction took 23878.41ms. Allocated memory was 94.4MB in the beginning and 316.7MB in the end (delta: 222.3MB). Free memory was 44.6MB in the beginning and 139.3MB in the end (delta: -94.7MB). Peak memory consumption was 126.6MB. Max. memory is 16.1GB. * Witness Printer took 69.65ms. Allocated memory is still 316.7MB. Free memory was 139.3MB in the beginning and 132.0MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.9s, 154 PlacesBefore, 32 PlacesAfterwards, 154 TransitionsBefore, 28 TransitionsAfterwards, 1584 CoEnabledTransitionPairs, 7 FixpointIterations, 98 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 168 TotalNumberOfCompositions, 3015 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1500, independent: 1358, independent conditional: 0, independent unconditional: 1358, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 877, independent: 834, independent conditional: 0, independent unconditional: 834, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1500, independent: 524, independent conditional: 0, independent unconditional: 524, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 877, unknown conditional: 0, unknown unconditional: 877] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1688] 0 struct device *my_dev; [L1733] CALL, EXPR 0 my_drv_init() [L1727] 0 return 0; [L1733] RET, EXPR 0 my_drv_init() [L1733] 0 int ret = my_drv_init(); [L1734] COND TRUE 0 ret==0 [L1735] 0 int probe_ret; [L1736] 0 struct my_data data; [L1737] CALL, EXPR 0 my_drv_probe(&data) [L1705] 0 data->shared.a = 0 [L1706] 0 data->shared.b = 0 [L1707] EXPR 0 data->shared.a [L1707] CALL 0 ldv_assert(data->shared.a==0) [L1675] COND FALSE 0 !(!expression) [L1707] RET 0 ldv_assert(data->shared.a==0) [L1708] EXPR 0 data->shared.b [L1708] CALL 0 ldv_assert(data->shared.b==0) [L1675] COND FALSE 0 !(!expression) [L1708] RET 0 ldv_assert(data->shared.b==0) [L1709] 0 int res = __VERIFIER_nondet_int(); [L1710] COND FALSE 0 !(\read(res)) [L1712] 0 my_dev = &data->dev [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, data={5:0}, data={5:0}, my_dev={5:24}, pthread_create(&t1, ((void *)0), my_callback, ((void *)0))=-2, res=0, t1={3:0}, t2={4:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, data={5:0}, data={5:0}, my_dev={5:24}, pthread_create(&t2, ((void *)0), my_callback, ((void *)0))=-1, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1737] RET, EXPR 0 my_drv_probe(&data) [L1737] 0 probe_ret = my_drv_probe(&data) VAL [arg={0:0}, data={5:0}, my_dev={5:24}, my_drv_probe(&data)=0, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [__mptr={5:24}, arg={0:0}, arg={0:0}, data={5:0}, my_dev={5:24}, t1={3:0}, t2={4:0}] [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [__mptr={5:24}, arg={0:0}, arg={0:0}, data={5:0}, my_dev={5:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1696] 1 int lb = data->shared.b; [L1738] COND TRUE 0 probe_ret==0 [L1739] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1722] 0 \read(t1) VAL [\read(t1)=-2, __mptr={5:24}, arg={0:0}, arg={0:0}, data={5:0}, data={5:0}, data={5:0}, lb=0, my_dev={5:24}, status={6:0}, t1={3:0}, t2={4:0}] [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-2, \result={0:0}, __mptr={5:24}, arg={0:0}, arg={0:0}, data={5:0}, data={5:0}, data={5:0}, lb=0, my_dev={5:24}, pthread_join(t1, &status)={0:0}, status={6:0}, t1={3:0}, t2={4:0}] [L1723] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, __mptr={5:24}, arg={0:0}, arg={0:0}, data={5:0}, data={5:0}, data={5:0}, lb=0, my_dev={5:24}, status={6:0}, t1={3:0}, t2={4:0}] [L1723] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=-1, \result={0:0}, __mptr={5:24}, arg={0:0}, arg={0:0}, data={5:0}, data={5:0}, data={5:0}, lb=0, my_dev={5:24}, pthread_join(t2, &status)={0:0}, status={6:0}, t1={3:0}, t2={4:0}] [L1739] RET 0 my_drv_disconnect(&data) [L1740] EXPR 0 data.shared.a [L1740] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) [L1740] RET 0 ldv_assert(data.shared.a==1) [L1741] EXPR 0 data.shared.b [L1741] CALL 0 ldv_assert(data.shared.b==2) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={5:24}, arg={0:0}, arg={0:0}, data={5:0}, expression=0, lb=0, my_dev={5:24}, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 170 locations, 8 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: 23.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1413 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1069 mSDsluCounter, 689 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 648 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6138 IncrementalHoareTripleChecker+Invalid, 6266 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 41 mSDtfsCounter, 6138 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1036occurred in iteration=9, InterpolantAutomatonStates: 56, 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, 0.3s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 1792 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 RESULT: Ultimate proved your program to be incorrect! [2023-09-01 10:00:25,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE