/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 BEFORE -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 01:57:31,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:57:31,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:57:31,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:57:31,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:57:31,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:57:31,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:57:31,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:57:31,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:57:31,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:57:31,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:57:31,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:57:31,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:57:31,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:57:31,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:57:31,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:57:31,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:57:31,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:57:31,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:57:31,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:57:31,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:57:31,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:57:31,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:57:31,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:57:31,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 01:57:31,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 01:57:31,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 01:57:31,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 01:57:31,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 01:57:31,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 01:57:31,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 01:57:31,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 01:57:31,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 01:57:31,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 01:57:31,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 01:57:31,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 01:57:31,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 01:57:31,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 01:57:31,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:57:31,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:57:31,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:57:31,153 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 01:57:31,173 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:57:31,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:57:31,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:57:31,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:57:31,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:57:31,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:57:31,175 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:57:31,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:57:31,175 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:57:31,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:57:31,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:57:31,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:57:31,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:57:31,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:57:31,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:57:31,176 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:57:31,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:57:31,176 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:57:31,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:57:31,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:57:31,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:57:31,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:57:31,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:57:31,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:57:31,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:57:31,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:57:31,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:57:31,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:57:31,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:57:31,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:57:31,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:57:31,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:57:31,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:57:31,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:57:31,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:57:31,381 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:57:31,381 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:57:31,382 INFO L432 ainManager$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 01:57:32,327 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:57:32,590 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:57:32,591 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-01-28 01:57:32,606 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720d97243/6ee6fe542f4d469cbab9d06e66d05ad1/FLAG64b037dd0 [2023-01-28 01:57:32,629 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720d97243/6ee6fe542f4d469cbab9d06e66d05ad1 [2023-01-28 01:57:32,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:57:32,631 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:57:32,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:57:32,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:57:32,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:57:32,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:57:32" (1/1) ... [2023-01-28 01:57:32,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfdd2af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:32, skipping insertion in model container [2023-01-28 01:57:32,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:57:32" (1/1) ... [2023-01-28 01:57:32,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:57:32,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:57:32,970 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 01:57:33,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:57:33,022 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:57:33,055 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 01:57:33,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:57:33,125 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:57:33,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33 WrapperNode [2023-01-28 01:57:33,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:57:33,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:57:33,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:57:33,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:57:33,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,191 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 344 [2023-01-28 01:57:33,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:57:33,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:57:33,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:57:33,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:57:33,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:57:33,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:57:33,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:57:33,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:57:33,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (1/1) ... [2023-01-28 01:57:33,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:57:33,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:57:33,252 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 01:57:33,269 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 01:57:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:57:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 01:57:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 01:57:33,291 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 01:57:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:57:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:57:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 01:57:33,293 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 01:57:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:57:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:57:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 01:57:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:57:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 01:57:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-01-28 01:57:33,296 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-01-28 01:57:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:57:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:57:33,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:57:33,297 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 01:57:33,435 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:57:33,436 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:57:33,761 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:57:33,767 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:57:33,767 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-01-28 01:57:33,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:57:33 BoogieIcfgContainer [2023-01-28 01:57:33,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:57:33,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:57:33,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:57:33,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:57:33,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:57:32" (1/3) ... [2023-01-28 01:57:33,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174527ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:57:33, skipping insertion in model container [2023-01-28 01:57:33,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:57:33" (2/3) ... [2023-01-28 01:57:33,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174527ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:57:33, skipping insertion in model container [2023-01-28 01:57:33,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:57:33" (3/3) ... [2023-01-28 01:57:33,774 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-01-28 01:57:33,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:57:33,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 01:57:33,785 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:57:33,866 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:57:33,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-01-28 01:57:34,123 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-01-28 01:57:34,124 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-01-28 01:57:34,142 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 01:57:34,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 350 transitions, 742 flow [2023-01-28 01:57:34,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 350 transitions, 742 flow [2023-01-28 01:57:34,159 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:57:34,174 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 350 transitions, 742 flow [2023-01-28 01:57:34,176 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 350 transitions, 742 flow [2023-01-28 01:57:34,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-01-28 01:57:34,327 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-01-28 01:57:34,327 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-01-28 01:57:34,338 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 01:57:34,377 INFO L119 LiptonReduction]: Number of co-enabled transitions 51176 [2023-01-28 01:57:45,646 INFO L134 LiptonReduction]: Checked pairs total: 98696 [2023-01-28 01:57:45,647 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-01-28 01:57:45,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:57:45,661 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;@54747f13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:57:45,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 01:57:45,666 INFO L130 PetriNetUnfolder]: 2/27 cut-off events. [2023-01-28 01:57:45,667 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:57:45,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:57:45,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:57:45,669 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 01:57:45,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:57:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2134265376, now seen corresponding path program 1 times [2023-01-28 01:57:45,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:57:45,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104134009] [2023-01-28 01:57:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:57:45,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:57:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:57:45,825 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:57:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:57:45,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:57:45,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:57:45,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-01-28 01:57:45,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 01:57:45,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 01:57:45,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:57:45,894 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:57:45,896 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-01-28 01:57:45,898 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:57:45,898 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:57:45,965 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-01-28 01:57:45,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 565 transitions, 1220 flow [2023-01-28 01:57:47,124 INFO L130 PetriNetUnfolder]: 1130/5483 cut-off events. [2023-01-28 01:57:47,125 INFO L131 PetriNetUnfolder]: For 602/702 co-relation queries the response was YES. [2023-01-28 01:57:47,286 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 50281 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 01:57:47,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 565 transitions, 1220 flow [2023-01-28 01:57:47,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 494 places, 565 transitions, 1220 flow [2023-01-28 01:57:47,331 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:57:47,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 494 places, 565 transitions, 1220 flow [2023-01-28 01:57:47,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 494 places, 565 transitions, 1220 flow [2023-01-28 01:57:47,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 565 transitions, 1220 flow [2023-01-28 01:57:48,635 INFO L130 PetriNetUnfolder]: 1130/5483 cut-off events. [2023-01-28 01:57:48,635 INFO L131 PetriNetUnfolder]: For 602/702 co-relation queries the response was YES. [2023-01-28 01:57:48,734 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 50281 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 01:57:49,054 INFO L119 LiptonReduction]: Number of co-enabled transitions 193052 [2023-01-28 01:58:02,346 INFO L134 LiptonReduction]: Checked pairs total: 408315 [2023-01-28 01:58:02,346 INFO L136 LiptonReduction]: Total number of compositions: 427 [2023-01-28 01:58:02,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:58:02,349 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;@54747f13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:58:02,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 01:58:02,356 INFO L130 PetriNetUnfolder]: 24/144 cut-off events. [2023-01-28 01:58:02,357 INFO L131 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2023-01-28 01:58:02,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:58:02,357 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:58:02,357 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 01:58:02,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:58:02,357 INFO L85 PathProgramCache]: Analyzing trace with hash 113769498, now seen corresponding path program 1 times [2023-01-28 01:58:02,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:58:02,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969847975] [2023-01-28 01:58:02,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:58:02,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:58:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:58:02,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:58:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:58:02,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:58:02,421 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:58:02,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-01-28 01:58:02,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 01:58:02,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 01:58:02,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:58:02,421 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:58:02,422 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-01-28 01:58:02,422 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:58:02,422 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:58:02,474 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-01-28 01:58:02,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 676 places, 780 transitions, 1704 flow [2023-01-28 01:58:15,764 INFO L130 PetriNetUnfolder]: 8984/31247 cut-off events. [2023-01-28 01:58:15,765 INFO L131 PetriNetUnfolder]: For 7059/7302 co-relation queries the response was YES. [2023-01-28 01:58:17,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38421 conditions, 31247 events. 8984/31247 cut-off events. For 7059/7302 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 342136 event pairs, 912 based on Foata normal form. 0/27005 useless extension candidates. Maximal degree in co-relation 20103. Up to 2304 conditions per place. [2023-01-28 01:58:17,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 676 places, 780 transitions, 1704 flow [2023-01-28 01:58:18,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 676 places, 780 transitions, 1704 flow [2023-01-28 01:58:18,179 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:58:18,179 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 676 places, 780 transitions, 1704 flow [2023-01-28 01:58:18,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 676 places, 780 transitions, 1704 flow [2023-01-28 01:58:18,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 676 places, 780 transitions, 1704 flow [2023-01-28 01:58:30,716 INFO L130 PetriNetUnfolder]: 8984/31247 cut-off events. [2023-01-28 01:58:30,717 INFO L131 PetriNetUnfolder]: For 7059/7302 co-relation queries the response was YES. [2023-01-28 01:58:32,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38421 conditions, 31247 events. 8984/31247 cut-off events. For 7059/7302 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 342136 event pairs, 912 based on Foata normal form. 0/27005 useless extension candidates. Maximal degree in co-relation 20103. Up to 2304 conditions per place. [2023-01-28 01:58:35,587 INFO L119 LiptonReduction]: Number of co-enabled transitions 425628 [2023-01-28 01:58:51,029 INFO L134 LiptonReduction]: Checked pairs total: 938617 [2023-01-28 01:58:51,029 INFO L136 LiptonReduction]: Total number of compositions: 591 [2023-01-28 01:58:51,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:58:51,055 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;@54747f13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:58:51,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 01:58:51,074 INFO L130 PetriNetUnfolder]: 98/415 cut-off events. [2023-01-28 01:58:51,075 INFO L131 PetriNetUnfolder]: For 55/65 co-relation queries the response was YES. [2023-01-28 01:58:51,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:58:51,075 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:58:51,075 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 01:58:51,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:58:51,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1274035994, now seen corresponding path program 1 times [2023-01-28 01:58:51,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:58:51,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805350152] [2023-01-28 01:58:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:58:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:58:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:58:51,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:58:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:58:51,158 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:58:51,159 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:58:51,159 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-01-28 01:58:51,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 01:58:51,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 01:58:51,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:58:51,159 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:58:51,160 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-01-28 01:58:51,160 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:58:51,160 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:58:51,222 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-01-28 01:58:51,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 858 places, 995 transitions, 2194 flow