/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 08:14:44,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 08:14:44,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 08:14:44,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 08:14:44,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 08:14:44,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 08:14:44,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 08:14:44,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 08:14:44,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 08:14:44,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 08:14:44,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 08:14:44,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 08:14:44,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 08:14:44,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 08:14:44,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 08:14:44,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 08:14:44,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 08:14:44,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 08:14:44,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 08:14:44,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 08:14:44,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 08:14:44,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 08:14:44,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 08:14:44,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 08:14:44,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 08:14:44,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 08:14:44,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 08:14:44,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 08:14:44,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 08:14:44,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 08:14:44,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 08:14:44,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 08:14:44,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 08:14:44,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 08:14:44,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 08:14:44,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 08:14:44,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 08:14:44,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 08:14:44,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 08:14:44,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 08:14:44,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 08:14:44,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 08:14:44,961 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 08:14:44,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 08:14:44,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 08:14:44,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 08:14:44,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 08:14:44,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 08:14:44,964 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 08:14:44,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 08:14:44,964 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 08:14:44,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 08:14:44,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 08:14:44,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 08:14:44,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 08:14:44,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 08:14:44,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 08:14:44,966 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 08:14:44,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 08:14:44,966 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 08:14:44,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 08:14:44,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 08:14:44,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 08:14:44,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 08:14:44,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 08:14:44,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:14:44,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 08:14:44,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 08:14:44,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 08:14:44,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 08:14:44,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 08:14:44,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 08:14:44,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 08:14:44,968 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 08:14:45,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 08:14:45,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 08:14:45,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 08:14:45,191 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 08:14:45,191 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 08:14:45,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-01-28 08:14:46,228 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 08:14:46,472 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 08:14:46,472 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-01-28 08:14:46,494 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68fb0839/a8bca05aaf484b59a2b31210d4282a2f/FLAG1a736a618 [2023-01-28 08:14:46,505 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68fb0839/a8bca05aaf484b59a2b31210d4282a2f [2023-01-28 08:14:46,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 08:14:46,522 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 08:14:46,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 08:14:46,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 08:14:46,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 08:14:46,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:14:46" (1/1) ... [2023-01-28 08:14:46,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a32c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:46, skipping insertion in model container [2023-01-28 08:14:46,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:14:46" (1/1) ... [2023-01-28 08:14:46,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 08:14:46,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 08:14:46,967 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2023-01-28 08:14:47,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:14:47,036 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 08:14:47,077 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2023-01-28 08:14:47,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:14:47,164 INFO L208 MainTranslator]: Completed translation [2023-01-28 08:14:47,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47 WrapperNode [2023-01-28 08:14:47,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 08:14:47,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 08:14:47,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 08:14:47,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 08:14:47,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,238 INFO L138 Inliner]: procedures = 279, calls = 88, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 384 [2023-01-28 08:14:47,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 08:14:47,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 08:14:47,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 08:14:47,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 08:14:47,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 08:14:47,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 08:14:47,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 08:14:47,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 08:14:47,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (1/1) ... [2023-01-28 08:14:47,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:14:47,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:14:47,319 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) [2023-01-28 08:14:47,342 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 [2023-01-28 08:14:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 08:14:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 08:14:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 08:14:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 08:14:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 08:14:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 08:14:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 08:14:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 08:14:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 08:14:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 08:14:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 08:14:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 08:14:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 08:14:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-01-28 08:14:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-01-28 08:14:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 08:14:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 08:14:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 08:14:47,364 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 08:14:47,572 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 08:14:47,574 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 08:14:48,089 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 08:14:48,102 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 08:14:48,102 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-01-28 08:14:48,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:14:48 BoogieIcfgContainer [2023-01-28 08:14:48,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 08:14:48,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 08:14:48,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 08:14:48,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 08:14:48,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:14:46" (1/3) ... [2023-01-28 08:14:48,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3669b002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:14:48, skipping insertion in model container [2023-01-28 08:14:48,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47" (2/3) ... [2023-01-28 08:14:48,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3669b002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:14:48, skipping insertion in model container [2023-01-28 08:14:48,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:14:48" (3/3) ... [2023-01-28 08:14:48,110 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-01-28 08:14:48,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 08:14:48,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 08:14:48,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 08:14:48,309 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 08:14:48,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-01-28 08:14:48,782 INFO L130 PetriNetUnfolder]: 188/1415 cut-off events. [2023-01-28 08:14:48,782 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-28 08:14:48,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-01-28 08:14:48,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 393 transitions, 828 flow [2023-01-28 08:14:48,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 392 transitions, 824 flow [2023-01-28 08:14:48,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:14:48,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 392 transitions, 824 flow [2023-01-28 08:14:48,856 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 392 transitions, 824 flow [2023-01-28 08:14:48,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 392 transitions, 824 flow [2023-01-28 08:14:49,125 INFO L130 PetriNetUnfolder]: 188/1414 cut-off events. [2023-01-28 08:14:49,125 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-28 08:14:49,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 1414 events. 188/1414 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9364 event pairs, 0 based on Foata normal form. 0/1218 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-01-28 08:14:49,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 68580 [2023-01-28 08:15:03,713 INFO L134 LiptonReduction]: Checked pairs total: 126459 [2023-01-28 08:15:03,714 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-01-28 08:15:03,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:15:03,730 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=false, 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;@39378799, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:15:03,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 08:15:03,743 INFO L130 PetriNetUnfolder]: 24/122 cut-off events. [2023-01-28 08:15:03,744 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:15:03,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:03,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:03,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 08:15:03,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1497562228, now seen corresponding path program 1 times [2023-01-28 08:15:03,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:03,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989758891] [2023-01-28 08:15:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:03,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:15:04,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:04,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989758891] [2023-01-28 08:15:04,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989758891] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:15:04,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:15:04,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:15:04,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817765385] [2023-01-28 08:15:04,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:15:04,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:15:04,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:04,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:15:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:15:04,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 708 [2023-01-28 08:15:04,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 121 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 344.3333333333333) internal successors, (1033), 3 states have internal predecessors, (1033), 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) [2023-01-28 08:15:04,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:04,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 708 [2023-01-28 08:15:04,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:20,011 INFO L130 PetriNetUnfolder]: 161652/228390 cut-off events. [2023-01-28 08:15:20,012 INFO L131 PetriNetUnfolder]: For 3943/3943 co-relation queries the response was YES. [2023-01-28 08:15:20,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444724 conditions, 228390 events. 161652/228390 cut-off events. For 3943/3943 co-relation queries the response was YES. Maximal size of possible extension queue 4215. Compared 1650492 event pairs, 99144 based on Foata normal form. 20804/214559 useless extension candidates. Maximal degree in co-relation 415679. Up to 213825 conditions per place. [2023-01-28 08:15:21,173 INFO L137 encePairwiseOnDemand]: 682/708 looper letters, 88 selfloop transitions, 2 changer transitions 1/106 dead transitions. [2023-01-28 08:15:21,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 106 transitions, 434 flow [2023-01-28 08:15:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:15:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:15:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1138 transitions. [2023-01-28 08:15:21,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357815442561206 [2023-01-28 08:15:21,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1138 transitions. [2023-01-28 08:15:21,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1138 transitions. [2023-01-28 08:15:21,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:21,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1138 transitions. [2023-01-28 08:15:21,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 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) [2023-01-28 08:15:21,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 708.0) internal successors, (2832), 4 states have internal predecessors, (2832), 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) [2023-01-28 08:15:21,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 708.0) internal successors, (2832), 4 states have internal predecessors, (2832), 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) [2023-01-28 08:15:21,223 INFO L175 Difference]: Start difference. First operand has 91 places, 121 transitions, 282 flow. Second operand 3 states and 1138 transitions. [2023-01-28 08:15:21,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 106 transitions, 434 flow [2023-01-28 08:15:21,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 106 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:15:21,255 INFO L231 Difference]: Finished difference. Result has 93 places, 98 transitions, 240 flow [2023-01-28 08:15:21,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=708, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=93, PETRI_TRANSITIONS=98} [2023-01-28 08:15:21,262 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-01-28 08:15:21,262 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 98 transitions, 240 flow [2023-01-28 08:15:21,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.3333333333333) internal successors, (1033), 3 states have internal predecessors, (1033), 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) [2023-01-28 08:15:21,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:21,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:21,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 08:15:21,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 08:15:21,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1987446864, now seen corresponding path program 1 times [2023-01-28 08:15:21,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948978286] [2023-01-28 08:15:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:21,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:15:21,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948978286] [2023-01-28 08:15:21,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948978286] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:15:21,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616495269] [2023-01-28 08:15:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:21,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:21,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:15:21,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:15:21,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 08:15:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:21,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 08:15:21,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:15:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:15:21,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:15:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:15:21,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616495269] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:15:21,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:15:21,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 08:15:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553681230] [2023-01-28 08:15:21,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:15:21,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 08:15:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:21,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 08:15:21,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 08:15:21,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 708 [2023-01-28 08:15:21,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 344.2857142857143) internal successors, (2410), 7 states have internal predecessors, (2410), 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) [2023-01-28 08:15:21,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:21,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 708 [2023-01-28 08:15:21,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:21,698 INFO L130 PetriNetUnfolder]: 14/41 cut-off events. [2023-01-28 08:15:21,698 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 08:15:21,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 41 events. 14/41 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 8/49 useless extension candidates. Maximal degree in co-relation 99. Up to 30 conditions per place. [2023-01-28 08:15:21,699 INFO L137 encePairwiseOnDemand]: 705/708 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-01-28 08:15:21,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 86 flow [2023-01-28 08:15:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:15:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:15:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1384 transitions. [2023-01-28 08:15:21,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887005649717514 [2023-01-28 08:15:21,703 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1384 transitions. [2023-01-28 08:15:21,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1384 transitions. [2023-01-28 08:15:21,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:21,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1384 transitions. [2023-01-28 08:15:21,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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) [2023-01-28 08:15:21,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 708.0) internal successors, (3540), 5 states have internal predecessors, (3540), 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) [2023-01-28 08:15:21,713 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 708.0) internal successors, (3540), 5 states have internal predecessors, (3540), 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) [2023-01-28 08:15:21,713 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 240 flow. Second operand 4 states and 1384 transitions. [2023-01-28 08:15:21,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 86 flow [2023-01-28 08:15:21,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 08:15:21,714 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-01-28 08:15:21,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=708, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-01-28 08:15:21,715 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -72 predicate places. [2023-01-28 08:15:21,715 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-01-28 08:15:21,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 344.2857142857143) internal successors, (2410), 7 states have internal predecessors, (2410), 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) [2023-01-28 08:15:21,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 08:15:21,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-01-28 08:15:21,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-01-28 08:15:21,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-28 08:15:21,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 08:15:21,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:21,926 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-01-28 08:15:21,928 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-01-28 08:15:21,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-01-28 08:15:22,122 INFO L130 PetriNetUnfolder]: 188/1415 cut-off events. [2023-01-28 08:15:22,123 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-28 08:15:22,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-01-28 08:15:22,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 393 transitions, 828 flow [2023-01-28 08:15:22,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 393 transitions, 828 flow [2023-01-28 08:15:22,146 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:15:22,148 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 393 transitions, 828 flow [2023-01-28 08:15:22,149 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 393 transitions, 828 flow [2023-01-28 08:15:22,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-01-28 08:15:22,340 INFO L130 PetriNetUnfolder]: 188/1415 cut-off events. [2023-01-28 08:15:22,340 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-28 08:15:22,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-01-28 08:15:22,396 INFO L119 LiptonReduction]: Number of co-enabled transitions 68634 [2023-01-28 08:15:38,207 INFO L134 LiptonReduction]: Checked pairs total: 124959 [2023-01-28 08:15:38,207 INFO L136 LiptonReduction]: Total number of compositions: 314 [2023-01-28 08:15:38,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 08:15:38,210 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=false, 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;@39378799, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:15:38,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 08:15:38,214 INFO L130 PetriNetUnfolder]: 4/29 cut-off events. [2023-01-28 08:15:38,215 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:15:38,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:38,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 08:15:38,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:15:38,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:38,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1632615932, now seen corresponding path program 1 times [2023-01-28 08:15:38,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:38,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077720800] [2023-01-28 08:15:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:38,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 08:15:38,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 08:15:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 08:15:38,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 08:15:38,295 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 08:15:38,296 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-01-28 08:15:38,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 08:15:38,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 08:15:38,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 08:15:38,300 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 08:15:38,301 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-01-28 08:15:38,302 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 08:15:38,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 08:15:38,395 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-01-28 08:15:38,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 534 places, 608 transitions, 1306 flow [2023-01-28 08:15:39,776 INFO L130 PetriNetUnfolder]: 1211/6644 cut-off events. [2023-01-28 08:15:39,776 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2023-01-28 08:15:39,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 6644 events. 1211/6644 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 60755 event pairs, 22 based on Foata normal form. 0/5717 useless extension candidates. Maximal degree in co-relation 4214. Up to 192 conditions per place. [2023-01-28 08:15:39,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 534 places, 608 transitions, 1306 flow [2023-01-28 08:15:39,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 533 places, 607 transitions, 1300 flow [2023-01-28 08:15:39,973 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:15:39,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 533 places, 607 transitions, 1300 flow [2023-01-28 08:15:39,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 533 places, 607 transitions, 1300 flow [2023-01-28 08:15:39,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 607 transitions, 1300 flow [2023-01-28 08:15:41,135 INFO L130 PetriNetUnfolder]: 1211/6643 cut-off events. [2023-01-28 08:15:41,135 INFO L131 PetriNetUnfolder]: For 601/601 co-relation queries the response was YES. [2023-01-28 08:15:41,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7315 conditions, 6643 events. 1211/6643 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 60733 event pairs, 22 based on Foata normal form. 0/5716 useless extension candidates. Maximal degree in co-relation 4214. Up to 192 conditions per place. [2023-01-28 08:15:41,777 INFO L119 LiptonReduction]: Number of co-enabled transitions 227860 [2023-01-28 08:15:56,949 INFO L134 LiptonReduction]: Checked pairs total: 464720 [2023-01-28 08:15:56,949 INFO L136 LiptonReduction]: Total number of compositions: 465 [2023-01-28 08:15:56,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:15:56,951 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=false, 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;@39378799, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:15:56,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 08:15:56,962 INFO L130 PetriNetUnfolder]: 28/145 cut-off events. [2023-01-28 08:15:56,962 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 08:15:56,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:56,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:56,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 08:15:56,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1590891071, now seen corresponding path program 1 times [2023-01-28 08:15:56,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:56,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486133056] [2023-01-28 08:15:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:56,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:15:57,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486133056] [2023-01-28 08:15:57,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486133056] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:15:57,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:15:57,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:15:57,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051603399] [2023-01-28 08:15:57,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:15:57,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:15:57,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:15:57,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:15:57,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 1073 [2023-01-28 08:15:57,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 213 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 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) [2023-01-28 08:15:57,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:57,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 1073 [2023-01-28 08:15:57,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand