./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 TOGETHER --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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:23:09,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:23:09,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:23:09,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:23:09,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:23:09,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:23:09,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:23:09,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:23:09,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:23:09,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:23:09,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:23:09,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:23:09,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:23:09,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:23:09,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:23:09,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:23:09,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:23:09,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:23:09,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:23:09,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:23:09,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:23:09,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:23:09,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:23:09,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:23:09,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:23:09,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:23:09,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:23:09,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:23:09,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:23:09,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:23:09,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:23:09,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:23:09,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:23:09,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:23:09,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:23:09,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:23:09,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:23:09,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:23:09,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:23:09,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:23:09,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:23:09,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:23:09,908 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:23:09,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:23:09,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:23:09,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:23:09,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:23:09,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:23:09,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:23:09,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:23:09,911 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:23:09,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:23:09,912 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:23:09,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:23:09,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:23:09,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:23:09,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:23:09,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:23:09,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:23:09,914 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:23:09,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:23:09,914 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:23:09,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:23:09,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:23:09,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:23:09,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:23:09,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:23:09,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:23:09,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:23:09,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:23:09,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:23:09,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:23:09,916 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:23:09,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:23:09,917 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:23:09,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:23:09,917 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:23:09,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:23:10,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:23:10,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:23:10,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:23:10,235 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:23:10,236 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:23:10,237 INFO L432 ainManager$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 [2023-08-30 23:23:11,347 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:23:11,622 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:23:11,622 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-30 23:23:11,641 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0db8da6/77c16f5908bf42c89a9e938469109513/FLAGc4cee7491 [2023-08-30 23:23:11,654 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0db8da6/77c16f5908bf42c89a9e938469109513 [2023-08-30 23:23:11,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:23:11,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:23:11,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:23:11,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:23:11,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:23:11,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:23:11" (1/1) ... [2023-08-30 23:23:11,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2844cfcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11, skipping insertion in model container [2023-08-30 23:23:11,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:23:11" (1/1) ... [2023-08-30 23:23:11,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:23:11,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:23:11,860 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 23:23:12,305 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] [2023-08-30 23:23:12,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:23:12,356 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:23:12,369 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 23:23:12,426 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] [2023-08-30 23:23:12,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:23:12,538 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:23:12,539 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:23:12,539 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:23:12,545 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:23:12,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12 WrapperNode [2023-08-30 23:23:12,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:23:12,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:23:12,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:23:12,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:23:12,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,600 INFO L138 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-08-30 23:23:12,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:23:12,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:23:12,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:23:12,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:23:12,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,642 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:23:12,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:23:12,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:23:12,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:23:12,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (1/1) ... [2023-08-30 23:23:12,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:23:12,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:23:12,686 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) [2023-08-30 23:23:12,698 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 [2023-08-30 23:23:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:23:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:23:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:23:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 23:23:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:23:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 23:23:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:23:12,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:23:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 23:23:12,725 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 23:23:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:23:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:23:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:23:12,727 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:23:13,031 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:23:13,033 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:23:13,356 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:23:13,375 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:23:13,375 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:23:13,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:23:13 BoogieIcfgContainer [2023-08-30 23:23:13,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:23:13,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:23:13,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:23:13,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:23:13,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:23:11" (1/3) ... [2023-08-30 23:23:13,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de6f948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:23:13, skipping insertion in model container [2023-08-30 23:23:13,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:12" (2/3) ... [2023-08-30 23:23:13,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de6f948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:23:13, skipping insertion in model container [2023-08-30 23:23:13,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:23:13" (3/3) ... [2023-08-30 23:23:13,387 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-08-30 23:23:13,394 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:23:13,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:23:13,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 23:23:13,402 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:23:13,474 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 23:23:13,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 166 transitions, 348 flow [2023-08-30 23:23:13,618 INFO L130 PetriNetUnfolder]: 10/204 cut-off events. [2023-08-30 23:23:13,619 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:23:13,623 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. [2023-08-30 23:23:13,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 166 transitions, 348 flow [2023-08-30 23:23:13,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 154 transitions, 320 flow [2023-08-30 23:23:13,634 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:23:13,647 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 154 transitions, 320 flow [2023-08-30 23:23:13,650 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 154 transitions, 320 flow [2023-08-30 23:23:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 154 transitions, 320 flow [2023-08-30 23:23:13,702 INFO L130 PetriNetUnfolder]: 7/185 cut-off events. [2023-08-30 23:23:13,702 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:23:13,704 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. [2023-08-30 23:23:13,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 1584 [2023-08-30 23:23:24,601 INFO L134 LiptonReduction]: Checked pairs total: 3015 [2023-08-30 23:23:24,601 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-30 23:23:24,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:23:24,616 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;@68147a4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:23:24,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 23:23:24,619 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 23:23:24,619 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:23:24,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:24,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 23:23:24,620 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)] === [2023-08-30 23:23:24,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:24,625 INFO L85 PathProgramCache]: Analyzing trace with hash 588, now seen corresponding path program 1 times [2023-08-30 23:23:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183639114] [2023-08-30 23:23:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:24,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:24,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:24,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183639114] [2023-08-30 23:23:24,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183639114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:24,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:24,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 23:23:24,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177015541] [2023-08-30 23:23:24,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 23:23:24,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:24,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 23:23:24,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 23:23:24,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 334 [2023-08-30 23:23:24,882 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) [2023-08-30 23:23:24,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:24,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 334 [2023-08-30 23:23:24,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:24,984 INFO L130 PetriNetUnfolder]: 169/315 cut-off events. [2023-08-30 23:23:24,984 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 23:23:24,985 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. [2023-08-30 23:23:24,988 INFO L137 encePairwiseOnDemand]: 331/334 looper letters, 24 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-30 23:23:24,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 110 flow [2023-08-30 23:23:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 23:23:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 23:23:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 323 transitions. [2023-08-30 23:23:25,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48353293413173654 [2023-08-30 23:23:25,002 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 323 transitions. [2023-08-30 23:23:25,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 323 transitions. [2023-08-30 23:23:25,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:25,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 323 transitions. [2023-08-30 23:23:25,010 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) [2023-08-30 23:23:25,014 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) [2023-08-30 23:23:25,015 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) [2023-08-30 23:23:25,016 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 68 flow. Second operand 2 states and 323 transitions. [2023-08-30 23:23:25,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 110 flow [2023-08-30 23:23:25,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 23:23:25,021 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 54 flow [2023-08-30 23:23:25,022 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} [2023-08-30 23:23:25,025 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-08-30 23:23:25,026 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 54 flow [2023-08-30 23:23:25,026 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) [2023-08-30 23:23:25,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:25,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 23:23:25,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:23:25,027 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)] === [2023-08-30 23:23:25,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash 18058040, now seen corresponding path program 1 times [2023-08-30 23:23:25,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:25,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587904201] [2023-08-30 23:23:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:25,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:25,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587904201] [2023-08-30 23:23:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587904201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:25,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:25,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:23:25,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307419328] [2023-08-30 23:23:25,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:25,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:23:25,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:23:25,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:23:25,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 334 [2023-08-30 23:23:25,507 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) [2023-08-30 23:23:25,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:25,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 334 [2023-08-30 23:23:25,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:25,635 INFO L130 PetriNetUnfolder]: 218/420 cut-off events. [2023-08-30 23:23:25,635 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:23:25,638 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. [2023-08-30 23:23:25,639 INFO L137 encePairwiseOnDemand]: 327/334 looper letters, 26 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-30 23:23:25,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 134 flow [2023-08-30 23:23:25,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:23:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:23:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-08-30 23:23:25,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341317365269461 [2023-08-30 23:23:25,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-08-30 23:23:25,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-08-30 23:23:25,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:25,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-08-30 23:23:25,648 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) [2023-08-30 23:23:25,651 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) [2023-08-30 23:23:25,652 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) [2023-08-30 23:23:25,652 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 54 flow. Second operand 3 states and 435 transitions. [2023-08-30 23:23:25,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 134 flow [2023-08-30 23:23:25,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:23:25,654 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 90 flow [2023-08-30 23:23:25,654 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} [2023-08-30 23:23:25,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2023-08-30 23:23:25,655 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 90 flow [2023-08-30 23:23:25,655 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) [2023-08-30 23:23:25,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:25,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 23:23:25,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:23:25,656 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)] === [2023-08-30 23:23:25,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:25,658 INFO L85 PathProgramCache]: Analyzing trace with hash 559797358, now seen corresponding path program 1 times [2023-08-30 23:23:25,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:25,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358155912] [2023-08-30 23:23:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:25,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:25,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358155912] [2023-08-30 23:23:25,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358155912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:25,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:25,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:23:25,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342477476] [2023-08-30 23:23:25,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:25,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:23:25,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:25,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:23:25,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:23:25,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 334 [2023-08-30 23:23:25,965 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) [2023-08-30 23:23:25,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:25,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 334 [2023-08-30 23:23:25,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:26,102 INFO L130 PetriNetUnfolder]: 291/536 cut-off events. [2023-08-30 23:23:26,102 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2023-08-30 23:23:26,103 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. [2023-08-30 23:23:26,105 INFO L137 encePairwiseOnDemand]: 327/334 looper letters, 30 selfloop transitions, 9 changer transitions 2/41 dead transitions. [2023-08-30 23:23:26,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 218 flow [2023-08-30 23:23:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:23:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:23:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-08-30 23:23:26,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351297405189621 [2023-08-30 23:23:26,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-08-30 23:23:26,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-08-30 23:23:26,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:26,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-08-30 23:23:26,109 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) [2023-08-30 23:23:26,125 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) [2023-08-30 23:23:26,126 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) [2023-08-30 23:23:26,126 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 90 flow. Second operand 3 states and 436 transitions. [2023-08-30 23:23:26,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 218 flow [2023-08-30 23:23:26,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:23:26,129 INFO L231 Difference]: Finished difference. Result has 32 places, 35 transitions, 155 flow [2023-08-30 23:23:26,129 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} [2023-08-30 23:23:26,130 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-08-30 23:23:26,130 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 155 flow [2023-08-30 23:23:26,130 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) [2023-08-30 23:23:26,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:26,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:26,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:23:26,131 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)] === [2023-08-30 23:23:26,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:26,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1429961496, now seen corresponding path program 1 times [2023-08-30 23:23:26,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:26,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104076590] [2023-08-30 23:23:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:26,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:26,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:26,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104076590] [2023-08-30 23:23:26,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104076590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:26,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:26,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:23:26,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157197277] [2023-08-30 23:23:26,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:26,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:23:26,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:26,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:23:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:23:26,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 334 [2023-08-30 23:23:26,200 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) [2023-08-30 23:23:26,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:26,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 334 [2023-08-30 23:23:26,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:26,260 INFO L130 PetriNetUnfolder]: 72/144 cut-off events. [2023-08-30 23:23:26,260 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-30 23:23:26,261 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. [2023-08-30 23:23:26,261 INFO L137 encePairwiseOnDemand]: 332/334 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-30 23:23:26,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 132 flow [2023-08-30 23:23:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:23:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:23:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-30 23:23:26,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530938123752495 [2023-08-30 23:23:26,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-30 23:23:26,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-30 23:23:26,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:26,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-30 23:23:26,265 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) [2023-08-30 23:23:26,267 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) [2023-08-30 23:23:26,268 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) [2023-08-30 23:23:26,268 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 155 flow. Second operand 3 states and 454 transitions. [2023-08-30 23:23:26,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 132 flow [2023-08-30 23:23:26,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 23:23:26,270 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 50 flow [2023-08-30 23:23:26,270 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} [2023-08-30 23:23:26,271 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2023-08-30 23:23:26,271 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 50 flow [2023-08-30 23:23:26,271 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) [2023-08-30 23:23:26,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:26,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:26,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:23:26,272 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)] === [2023-08-30 23:23:26,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:26,272 INFO L85 PathProgramCache]: Analyzing trace with hash -48803317, now seen corresponding path program 1 times [2023-08-30 23:23:26,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:26,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883801748] [2023-08-30 23:23:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:26,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:26,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:26,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883801748] [2023-08-30 23:23:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883801748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:26,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:26,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:23:26,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126217738] [2023-08-30 23:23:26,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:23:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:26,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:23:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:23:27,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 334 [2023-08-30 23:23:27,185 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) [2023-08-30 23:23:27,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:27,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 334 [2023-08-30 23:23:27,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:27,390 INFO L130 PetriNetUnfolder]: 108/232 cut-off events. [2023-08-30 23:23:27,390 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 23:23:27,391 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. [2023-08-30 23:23:27,392 INFO L137 encePairwiseOnDemand]: 325/334 looper letters, 33 selfloop transitions, 18 changer transitions 0/51 dead transitions. [2023-08-30 23:23:27,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 51 transitions, 247 flow [2023-08-30 23:23:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:23:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:23:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 941 transitions. [2023-08-30 23:23:27,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402480752780154 [2023-08-30 23:23:27,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 941 transitions. [2023-08-30 23:23:27,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 941 transitions. [2023-08-30 23:23:27,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:27,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 941 transitions. [2023-08-30 23:23:27,397 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) [2023-08-30 23:23:27,401 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) [2023-08-30 23:23:27,402 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) [2023-08-30 23:23:27,402 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 50 flow. Second operand 7 states and 941 transitions. [2023-08-30 23:23:27,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 51 transitions, 247 flow [2023-08-30 23:23:27,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:23:27,404 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 161 flow [2023-08-30 23:23:27,404 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} [2023-08-30 23:23:27,405 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-30 23:23:27,405 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 161 flow [2023-08-30 23:23:27,406 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) [2023-08-30 23:23:27,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:27,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:27,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:23:27,406 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)] === [2023-08-30 23:23:27,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1052545929, now seen corresponding path program 2 times [2023-08-30 23:23:27,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:27,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559918841] [2023-08-30 23:23:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:27,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:28,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:28,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559918841] [2023-08-30 23:23:28,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559918841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:28,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:28,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:23:28,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962447955] [2023-08-30 23:23:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:23:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:23:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:23:28,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 334 [2023-08-30 23:23:28,355 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) [2023-08-30 23:23:28,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:28,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 334 [2023-08-30 23:23:28,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:28,537 INFO L130 PetriNetUnfolder]: 117/260 cut-off events. [2023-08-30 23:23:28,538 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2023-08-30 23:23:28,538 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. [2023-08-30 23:23:28,540 INFO L137 encePairwiseOnDemand]: 326/334 looper letters, 35 selfloop transitions, 19 changer transitions 0/54 dead transitions. [2023-08-30 23:23:28,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 373 flow [2023-08-30 23:23:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:23:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:23:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 814 transitions. [2023-08-30 23:23:28,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406187624750499 [2023-08-30 23:23:28,543 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 814 transitions. [2023-08-30 23:23:28,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 814 transitions. [2023-08-30 23:23:28,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:28,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 814 transitions. [2023-08-30 23:23:28,547 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) [2023-08-30 23:23:28,550 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) [2023-08-30 23:23:28,551 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) [2023-08-30 23:23:28,552 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 161 flow. Second operand 6 states and 814 transitions. [2023-08-30 23:23:28,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 373 flow [2023-08-30 23:23:28,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 356 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 23:23:28,561 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 290 flow [2023-08-30 23:23:28,561 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} [2023-08-30 23:23:28,562 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-08-30 23:23:28,562 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 290 flow [2023-08-30 23:23:28,563 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) [2023-08-30 23:23:28,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:28,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:28,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:23:28,564 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)] === [2023-08-30 23:23:28,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:28,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1052545944, now seen corresponding path program 1 times [2023-08-30 23:23:28,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:28,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483774982] [2023-08-30 23:23:28,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:28,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483774982] [2023-08-30 23:23:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483774982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:30,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:30,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 23:23:30,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853259728] [2023-08-30 23:23:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:30,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 23:23:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 23:23:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-08-30 23:23:30,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 334 [2023-08-30 23:23:30,809 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) [2023-08-30 23:23:30,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:30,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 334 [2023-08-30 23:23:30,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:31,482 INFO L130 PetriNetUnfolder]: 132/307 cut-off events. [2023-08-30 23:23:31,483 INFO L131 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2023-08-30 23:23:31,483 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. [2023-08-30 23:23:31,485 INFO L137 encePairwiseOnDemand]: 324/334 looper letters, 68 selfloop transitions, 26 changer transitions 13/107 dead transitions. [2023-08-30 23:23:31,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 107 transitions, 906 flow [2023-08-30 23:23:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 23:23:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 23:23:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1278 transitions. [2023-08-30 23:23:31,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38263473053892216 [2023-08-30 23:23:31,491 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1278 transitions. [2023-08-30 23:23:31,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1278 transitions. [2023-08-30 23:23:31,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:31,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1278 transitions. [2023-08-30 23:23:31,495 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) [2023-08-30 23:23:31,499 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) [2023-08-30 23:23:31,500 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) [2023-08-30 23:23:31,500 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 290 flow. Second operand 10 states and 1278 transitions. [2023-08-30 23:23:31,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 107 transitions, 906 flow [2023-08-30 23:23:31,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 107 transitions, 879 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 23:23:31,505 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 534 flow [2023-08-30 23:23:31,505 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} [2023-08-30 23:23:31,506 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2023-08-30 23:23:31,506 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 534 flow [2023-08-30 23:23:31,507 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) [2023-08-30 23:23:31,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:31,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:31,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:23:31,507 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)] === [2023-08-30 23:23:31,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash -943397196, now seen corresponding path program 2 times [2023-08-30 23:23:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603421997] [2023-08-30 23:23:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:32,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:32,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603421997] [2023-08-30 23:23:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603421997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:32,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:32,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 23:23:32,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43969934] [2023-08-30 23:23:32,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:32,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 23:23:32,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 23:23:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-08-30 23:23:33,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 334 [2023-08-30 23:23:33,546 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) [2023-08-30 23:23:33,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:33,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 334 [2023-08-30 23:23:33,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:34,158 INFO L130 PetriNetUnfolder]: 149/348 cut-off events. [2023-08-30 23:23:34,158 INFO L131 PetriNetUnfolder]: For 1293/1293 co-relation queries the response was YES. [2023-08-30 23:23:34,159 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. [2023-08-30 23:23:34,160 INFO L137 encePairwiseOnDemand]: 325/334 looper letters, 60 selfloop transitions, 33 changer transitions 16/109 dead transitions. [2023-08-30 23:23:34,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 109 transitions, 1122 flow [2023-08-30 23:23:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 23:23:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 23:23:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1273 transitions. [2023-08-30 23:23:34,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3811377245508982 [2023-08-30 23:23:34,165 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1273 transitions. [2023-08-30 23:23:34,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1273 transitions. [2023-08-30 23:23:34,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:34,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1273 transitions. [2023-08-30 23:23:34,168 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) [2023-08-30 23:23:34,173 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) [2023-08-30 23:23:34,174 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) [2023-08-30 23:23:34,174 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 534 flow. Second operand 10 states and 1273 transitions. [2023-08-30 23:23:34,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 109 transitions, 1122 flow [2023-08-30 23:23:34,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 1092 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-30 23:23:34,181 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 776 flow [2023-08-30 23:23:34,181 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} [2023-08-30 23:23:34,181 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-08-30 23:23:34,182 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 776 flow [2023-08-30 23:23:34,182 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) [2023-08-30 23:23:34,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:34,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:34,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:23:34,183 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)] === [2023-08-30 23:23:34,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:34,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1145278948, now seen corresponding path program 3 times [2023-08-30 23:23:34,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:34,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851846889] [2023-08-30 23:23:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:34,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:35,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:35,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851846889] [2023-08-30 23:23:35,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851846889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:35,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:35,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 23:23:35,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801325954] [2023-08-30 23:23:35,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:35,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 23:23:35,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 23:23:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-08-30 23:23:36,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 334 [2023-08-30 23:23:36,122 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) [2023-08-30 23:23:36,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:36,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 334 [2023-08-30 23:23:36,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:36,687 INFO L130 PetriNetUnfolder]: 156/390 cut-off events. [2023-08-30 23:23:36,687 INFO L131 PetriNetUnfolder]: For 1955/1955 co-relation queries the response was YES. [2023-08-30 23:23:36,689 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. [2023-08-30 23:23:36,691 INFO L137 encePairwiseOnDemand]: 324/334 looper letters, 83 selfloop transitions, 48 changer transitions 16/147 dead transitions. [2023-08-30 23:23:36,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 147 transitions, 1614 flow [2023-08-30 23:23:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 23:23:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 23:23:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1550 transitions. [2023-08-30 23:23:36,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38672654690618763 [2023-08-30 23:23:36,696 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1550 transitions. [2023-08-30 23:23:36,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1550 transitions. [2023-08-30 23:23:36,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:36,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1550 transitions. [2023-08-30 23:23:36,700 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) [2023-08-30 23:23:36,704 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) [2023-08-30 23:23:36,705 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) [2023-08-30 23:23:36,706 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 776 flow. Second operand 12 states and 1550 transitions. [2023-08-30 23:23:36,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 147 transitions, 1614 flow [2023-08-30 23:23:36,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 147 transitions, 1522 flow, removed 32 selfloop flow, removed 5 redundant places. [2023-08-30 23:23:36,715 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 1036 flow [2023-08-30 23:23:36,716 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} [2023-08-30 23:23:36,716 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-08-30 23:23:36,717 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 1036 flow [2023-08-30 23:23:36,717 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) [2023-08-30 23:23:36,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:36,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:36,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:23:36,718 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)] === [2023-08-30 23:23:36,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:36,718 INFO L85 PathProgramCache]: Analyzing trace with hash -283674976, now seen corresponding path program 4 times [2023-08-30 23:23:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:36,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241967582] [2023-08-30 23:23:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:36,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:23:36,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 23:23:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:23:36,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 23:23:36,843 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 23:23:36,845 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-30 23:23:36,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-30 23:23:36,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-30 23:23:36,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-30 23:23:36,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-30 23:23:36,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-30 23:23:36,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-30 23:23:36,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-30 23:23:36,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:23:36,847 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1] [2023-08-30 23:23:36,851 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:23:36,852 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:23:36,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:23:36 BasicIcfg [2023-08-30 23:23:36,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:23:36,916 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:23:36,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:23:36,917 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:23:36,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:23:13" (3/4) ... [2023-08-30 23:23:36,919 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 23:23:36,979 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:23:36,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:23:36,980 INFO L158 Benchmark]: Toolchain (without parser) took 25322.04ms. Allocated memory was 65.0MB in the beginning and 333.4MB in the end (delta: 268.4MB). Free memory was 31.3MB in the beginning and 135.5MB in the end (delta: -104.3MB). Peak memory consumption was 163.5MB. Max. memory is 16.1GB. [2023-08-30 23:23:36,980 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 30.3MB in the beginning and 30.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:23:36,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 884.30ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 30.9MB in the beginning and 51.8MB in the end (delta: -20.9MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-08-30 23:23:36,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.48ms. Allocated memory is still 79.7MB. Free memory was 51.8MB in the beginning and 48.5MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:23:36,981 INFO L158 Benchmark]: Boogie Preprocessor took 47.96ms. Allocated memory is still 79.7MB. Free memory was 48.5MB in the beginning and 46.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:23:36,981 INFO L158 Benchmark]: RCFGBuilder took 727.82ms. Allocated memory is still 79.7MB. Free memory was 46.0MB in the beginning and 42.0MB in the end (delta: 3.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-08-30 23:23:36,981 INFO L158 Benchmark]: TraceAbstraction took 23534.05ms. Allocated memory was 79.7MB in the beginning and 333.4MB in the end (delta: 253.8MB). Free memory was 41.5MB in the beginning and 141.8MB in the end (delta: -100.3MB). Peak memory consumption was 157.6MB. Max. memory is 16.1GB. [2023-08-30 23:23:36,982 INFO L158 Benchmark]: Witness Printer took 62.77ms. Allocated memory is still 333.4MB. Free memory was 141.8MB in the beginning and 135.5MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:23:36,984 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 52.4MB. Free memory was 30.3MB in the beginning and 30.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 884.30ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 30.9MB in the beginning and 51.8MB in the end (delta: -20.9MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.48ms. Allocated memory is still 79.7MB. Free memory was 51.8MB in the beginning and 48.5MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.96ms. Allocated memory is still 79.7MB. Free memory was 48.5MB in the beginning and 46.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 727.82ms. Allocated memory is still 79.7MB. Free memory was 46.0MB in the beginning and 42.0MB in the end (delta: 3.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * TraceAbstraction took 23534.05ms. Allocated memory was 79.7MB in the beginning and 333.4MB in the end (delta: 253.8MB). Free memory was 41.5MB in the beginning and 141.8MB in the end (delta: -100.3MB). Peak memory consumption was 157.6MB. Max. memory is 16.1GB. * Witness Printer took 62.77ms. Allocated memory is still 333.4MB. Free memory was 141.8MB in the beginning and 135.5MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.0s, 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: 23.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1413 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1069 mSDsluCounter, 689 SdHoareTripleChecker+Invalid, 3.3s 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, 1.3s 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, 0.2s SatisfiabilityAnalysisTime, 5.9s 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! [2023-08-30 23:23:37,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE