/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_85-list2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 08:14:45,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 08:14:45,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 08:14:45,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 08:14:45,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 08:14:45,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 08:14:45,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 08:14:45,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 08:14:45,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 08:14:45,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 08:14:45,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 08:14:45,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 08:14:45,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 08:14:45,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 08:14:45,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 08:14:45,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 08:14:45,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 08:14:45,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 08:14:45,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 08:14:45,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 08:14:45,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 08:14:45,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 08:14:45,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 08:14:45,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 08:14:45,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 08:14:45,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 08:14:45,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 08:14:45,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 08:14:45,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 08:14:45,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 08:14:45,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 08:14:45,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 08:14:45,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 08:14:45,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 08:14:45,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 08:14:45,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 08:14:45,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 08:14:45,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 08:14:45,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 08:14:45,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 08:14:45,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 08:14:45,327 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 08:14:45,353 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 08:14:45,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 08:14:45,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 08:14:45,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 08:14:45,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 08:14:45,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 08:14:45,355 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 08:14:45,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 08:14:45,355 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 08:14:45,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 08:14:45,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 08:14:45,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 08:14:45,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 08:14:45,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 08:14:45,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 08:14:45,356 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 08:14:45,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 08:14:45,356 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 08:14:45,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 08:14:45,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 08:14:45,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 08:14:45,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 08:14:45,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 08:14:45,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:14:45,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 08:14:45,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 08:14:45,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 08:14:45,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 08:14:45,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 08:14:45,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 08:14:45,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 08:14:45,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 08:14:45,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 08:14:45,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 08:14:45,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 08:14:45,531 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 08:14:45,531 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 08:14:45,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-01-28 08:14:46,399 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 08:14:46,628 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 08:14:46,628 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-01-28 08:14:46,640 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b7f6dfb/0c2db3586c4740248aaf7d14e9d8d1b4/FLAG198443eda [2023-01-28 08:14:46,649 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b7f6dfb/0c2db3586c4740248aaf7d14e9d8d1b4 [2023-01-28 08:14:46,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 08:14:46,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 08:14:46,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 08:14:46,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 08:14:46,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 08:14:46,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:14:46" (1/1) ... [2023-01-28 08:14:46,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627ef9 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 08:14:46,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:14:46" (1/1) ... [2023-01-28 08:14:46,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 08:14:46,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 08:14:46,956 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_85-list2_racefree.i[47038,47051] [2023-01-28 08:14:47,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:14:47,017 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 08:14:47,042 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_85-list2_racefree.i[47038,47051] [2023-01-28 08:14:47,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:14:47,087 INFO L208 MainTranslator]: Completed translation [2023-01-28 08:14:47,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:14:47 WrapperNode [2023-01-28 08:14:47,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 08:14:47,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 08:14:47,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 08:14:47,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 08:14:47,093 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 08:14:47,109 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 08:14:47,142 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 344 [2023-01-28 08:14:47,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 08:14:47,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 08:14:47,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 08:14:47,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 08:14:47,149 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 08:14:47,149 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 08:14:47,153 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 08:14:47,153 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 08:14:47,161 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 08:14:47,169 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 08:14:47,170 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 08:14:47,172 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 08:14:47,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 08:14:47,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 08:14:47,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 08:14:47,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 08:14:47,176 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 08:14:47,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:14:47,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:14:47,205 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 08:14:47,221 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 08:14:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 08:14:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 08:14:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 08:14:47,235 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 08:14:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 08:14:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 08:14:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 08:14:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 08:14:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 08:14:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 08:14:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 08:14:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 08:14:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 08:14:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-01-28 08:14:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-01-28 08:14:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 08:14:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 08:14:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 08:14:47,240 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 08:14:47,378 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 08:14:47,379 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 08:14:47,763 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 08:14:47,771 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 08:14:47,771 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-01-28 08:14:47,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:14:47 BoogieIcfgContainer [2023-01-28 08:14:47,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 08:14:47,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 08:14:47,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 08:14:47,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 08:14:47,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:14:46" (1/3) ... [2023-01-28 08:14:47,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb178fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:14:47, skipping insertion in model container [2023-01-28 08:14:47,777 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 08:14:47,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb178fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:14:47, skipping insertion in model container [2023-01-28 08:14:47,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:14:47" (3/3) ... [2023-01-28 08:14:47,779 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-01-28 08:14:47,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 08:14:47,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 08:14:47,790 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 08:14:47,863 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 08:14:47,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-01-28 08:14:48,108 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-01-28 08:14:48,108 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-01-28 08:14:48,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-01-28 08:14:48,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 350 transitions, 742 flow [2023-01-28 08:14:48,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 349 transitions, 738 flow [2023-01-28 08:14:48,138 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:14:48,154 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 349 transitions, 738 flow [2023-01-28 08:14:48,156 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 349 transitions, 738 flow [2023-01-28 08:14:48,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 349 transitions, 738 flow [2023-01-28 08:14:48,290 INFO L130 PetriNetUnfolder]: 164/1070 cut-off events. [2023-01-28 08:14:48,290 INFO L131 PetriNetUnfolder]: For 36/54 co-relation queries the response was YES. [2023-01-28 08:14:48,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 1070 events. 164/1070 cut-off events. For 36/54 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6694 event pairs, 0 based on Foata normal form. 0/894 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-01-28 08:14:48,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 51122 [2023-01-28 08:15:02,016 INFO L134 LiptonReduction]: Checked pairs total: 106624 [2023-01-28 08:15:02,016 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-01-28 08:15:02,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:15:02,030 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;@58599005, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:15:02,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 08:15:02,038 INFO L130 PetriNetUnfolder]: 19/122 cut-off events. [2023-01-28 08:15:02,038 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2023-01-28 08:15:02,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:02,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:02,039 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 08:15:02,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1015283174, now seen corresponding path program 1 times [2023-01-28 08:15:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:02,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063375969] [2023-01-28 08:15:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:02,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:02,352 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 08:15:02,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063375969] [2023-01-28 08:15:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063375969] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:15:02,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:15:02,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:15:02,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413060062] [2023-01-28 08:15:02,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:15:02,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:15:02,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:02,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:15:02,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:15:02,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 627 [2023-01-28 08:15:02,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 112 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 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 08:15:02,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:02,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 627 [2023-01-28 08:15:02,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:11,587 INFO L130 PetriNetUnfolder]: 109462/157773 cut-off events. [2023-01-28 08:15:11,587 INFO L131 PetriNetUnfolder]: For 4893/4893 co-relation queries the response was YES. [2023-01-28 08:15:11,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305889 conditions, 157773 events. 109462/157773 cut-off events. For 4893/4893 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 1151139 event pairs, 68136 based on Foata normal form. 14388/146240 useless extension candidates. Maximal degree in co-relation 276379. Up to 145615 conditions per place. [2023-01-28 08:15:12,215 INFO L137 encePairwiseOnDemand]: 602/627 looper letters, 81 selfloop transitions, 2 changer transitions 1/98 dead transitions. [2023-01-28 08:15:12,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 404 flow [2023-01-28 08:15:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:15:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:15:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1004 transitions. [2023-01-28 08:15:12,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337586390217969 [2023-01-28 08:15:12,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1004 transitions. [2023-01-28 08:15:12,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1004 transitions. [2023-01-28 08:15:12,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:12,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1004 transitions. [2023-01-28 08:15:12,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 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 08:15:12,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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 08:15:12,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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 08:15:12,254 INFO L175 Difference]: Start difference. First operand has 84 places, 112 transitions, 264 flow. Second operand 3 states and 1004 transitions. [2023-01-28 08:15:12,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 404 flow [2023-01-28 08:15:12,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 98 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:15:12,276 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 224 flow [2023-01-28 08:15:12,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-01-28 08:15:12,281 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-01-28 08:15:12,281 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 224 flow [2023-01-28 08:15:12,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 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 08:15:12,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:12,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:12,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 08:15:12,282 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 08:15:12,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1080528569, now seen corresponding path program 1 times [2023-01-28 08:15:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:12,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974374401] [2023-01-28 08:15:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:12,402 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 08:15:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:12,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974374401] [2023-01-28 08:15:12,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974374401] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:15:12,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930402005] [2023-01-28 08:15:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:12,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:15:12,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:15:12,407 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 08:15:12,421 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 08:15:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:12,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 08:15:12,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:15:12,608 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 08:15:12,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:15:12,622 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 08:15:12,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930402005] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:15:12,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:15:12,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 08:15:12,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505569631] [2023-01-28 08:15:12,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:15:12,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 08:15:12,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:12,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 08:15:12,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 08:15:12,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 627 [2023-01-28 08:15:12,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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 08:15:12,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:12,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 627 [2023-01-28 08:15:12,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:15:12,658 INFO L130 PetriNetUnfolder]: 14/41 cut-off events. [2023-01-28 08:15:12,658 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 08:15:12,658 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 72 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 08:15:12,658 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-01-28 08:15:12,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 86 flow [2023-01-28 08:15:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:15:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:15:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1216 transitions. [2023-01-28 08:15:12,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-01-28 08:15:12,661 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1216 transitions. [2023-01-28 08:15:12,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1216 transitions. [2023-01-28 08:15:12,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:15:12,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1216 transitions. [2023-01-28 08:15:12,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 08:15:12,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 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 08:15:12,668 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 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 08:15:12,668 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 224 flow. Second operand 4 states and 1216 transitions. [2023-01-28 08:15:12,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 86 flow [2023-01-28 08:15:12,668 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 08:15:12,669 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-01-28 08:15:12,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, 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 08:15:12,669 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -65 predicate places. [2023-01-28 08:15:12,669 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-01-28 08:15:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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 08:15:12,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 08:15:12,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-01-28 08:15:12,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-01-28 08:15:12,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-28 08:15:12,682 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 08:15:12,880 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 08:15:12,880 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-01-28 08:15:12,882 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-01-28 08:15:12,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-01-28 08:15:12,965 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-01-28 08:15:12,966 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-01-28 08:15:12,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-01-28 08:15:12,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 350 transitions, 742 flow [2023-01-28 08:15:12,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 350 transitions, 742 flow [2023-01-28 08:15:12,981 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:15:12,981 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 350 transitions, 742 flow [2023-01-28 08:15:12,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 350 transitions, 742 flow [2023-01-28 08:15:12,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-01-28 08:15:13,060 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-01-28 08:15:13,060 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-01-28 08:15:13,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-01-28 08:15:13,093 INFO L119 LiptonReduction]: Number of co-enabled transitions 51176 [2023-01-28 08:15:24,013 INFO L134 LiptonReduction]: Checked pairs total: 98159 [2023-01-28 08:15:24,013 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-01-28 08:15:24,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 08:15:24,016 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;@58599005, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:15:24,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 08:15:24,019 INFO L130 PetriNetUnfolder]: 2/27 cut-off events. [2023-01-28 08:15:24,019 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:15:24,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:24,019 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 08:15:24,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:15:24,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:24,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1792580423, now seen corresponding path program 1 times [2023-01-28 08:15:24,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:24,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182374945] [2023-01-28 08:15:24,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:24,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 08:15:24,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 08:15:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 08:15:24,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 08:15:24,070 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 08:15:24,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-01-28 08:15:24,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 08:15:24,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 08:15:24,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 08:15:24,070 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 08:15:24,071 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-01-28 08:15:24,071 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 08:15:24,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 08:15:24,119 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-01-28 08:15:24,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 565 transitions, 1220 flow [2023-01-28 08:15:25,155 INFO L130 PetriNetUnfolder]: 1130/5483 cut-off events. [2023-01-28 08:15:25,155 INFO L131 PetriNetUnfolder]: For 602/702 co-relation queries the response was YES. [2023-01-28 08:15:25,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 5483 events. 1130/5483 cut-off events. For 602/702 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 50335 event pairs, 22 based on Foata normal form. 0/4621 useless extension candidates. Maximal degree in co-relation 3440. Up to 192 conditions per place. [2023-01-28 08:15:25,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 565 transitions, 1220 flow [2023-01-28 08:15:25,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 493 places, 564 transitions, 1214 flow [2023-01-28 08:15:25,366 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:15:25,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 493 places, 564 transitions, 1214 flow [2023-01-28 08:15:25,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 493 places, 564 transitions, 1214 flow [2023-01-28 08:15:25,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 493 places, 564 transitions, 1214 flow [2023-01-28 08:15:26,286 INFO L130 PetriNetUnfolder]: 1130/5482 cut-off events. [2023-01-28 08:15:26,287 INFO L131 PetriNetUnfolder]: For 601/688 co-relation queries the response was YES. [2023-01-28 08:15:26,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 5482 events. 1130/5482 cut-off events. For 601/688 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 50280 event pairs, 22 based on Foata normal form. 0/4620 useless extension candidates. Maximal degree in co-relation 3440. Up to 192 conditions per place. [2023-01-28 08:15:26,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 192944 [2023-01-28 08:15:41,382 INFO L134 LiptonReduction]: Checked pairs total: 407330 [2023-01-28 08:15:41,382 INFO L136 LiptonReduction]: Total number of compositions: 427 [2023-01-28 08:15:41,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:15:41,385 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;@58599005, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:15:41,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 08:15:41,393 INFO L130 PetriNetUnfolder]: 25/158 cut-off events. [2023-01-28 08:15:41,393 INFO L131 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2023-01-28 08:15:41,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:15:41,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:15:41,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 08:15:41,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:15:41,394 INFO L85 PathProgramCache]: Analyzing trace with hash 567540882, now seen corresponding path program 1 times [2023-01-28 08:15:41,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:15:41,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439970544] [2023-01-28 08:15:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:15:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:15:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:15:41,448 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 08:15:41,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:15:41,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439970544] [2023-01-28 08:15:41,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439970544] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:15:41,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:15:41,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:15:41,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804697119] [2023-01-28 08:15:41,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:15:41,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:15:41,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:15:41,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:15:41,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:15:41,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 476 out of 992 [2023-01-28 08:15:41,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 203 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 479.0) internal successors, (1437), 3 states have internal predecessors, (1437), 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 08:15:41,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:15:41,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 476 of 992 [2023-01-28 08:15:41,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand