./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:34:49,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:34:49,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:34:49,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:34:49,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:34:49,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:34:49,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:34:49,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:34:49,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:34:49,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:34:49,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:34:49,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:34:49,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:34:49,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:34:49,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:34:49,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:34:49,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:34:49,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:34:49,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:34:49,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:34:49,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:34:49,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:34:49,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:34:49,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:34:49,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:34:49,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:34:49,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:34:49,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:34:49,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:34:49,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:34:49,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:34:49,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:34:49,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:34:49,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:34:49,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:34:49,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:34:49,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:34:49,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:34:49,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:34:49,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:34:49,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:34:49,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:34:49,261 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:34:49,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:34:49,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:34:49,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:34:49,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:34:49,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:34:49,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:34:49,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:34:49,264 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:34:49,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:34:49,265 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:34:49,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:34:49,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:34:49,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:34:49,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:34:49,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:34:49,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:34:49,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:34:49,266 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:34:49,267 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:34:49,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:34:49,267 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:34:49,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:34:49,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:34:49,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:34:49,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:34:49,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:34:49,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:34:49,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:34:49,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:34:49,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:34:49,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:34:49,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:34:49,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:34:49,269 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:34:49,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:34:49,270 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:34:49,270 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:34:49,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:34:49,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:34:49,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:34:49,621 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:34:49,622 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:34:49,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-09-01 06:34:50,775 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:34:51,004 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:34:51,004 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-09-01 06:34:51,017 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0646e04b/f09715ac2a85494dbf7742760e4cbc4f/FLAG17c7b59e0 [2023-09-01 06:34:51,032 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0646e04b/f09715ac2a85494dbf7742760e4cbc4f [2023-09-01 06:34:51,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:34:51,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:34:51,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:34:51,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:34:51,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:34:51,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ca53b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51, skipping insertion in model container [2023-09-01 06:34:51,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:34:51,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:34:51,417 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_08-cond_racefree.i[41322,41335] [2023-09-01 06:34:51,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:34:51,460 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:34:51,497 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_08-cond_racefree.i[41322,41335] [2023-09-01 06:34:51,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:34:51,574 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:34:51,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51 WrapperNode [2023-09-01 06:34:51,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:34:51,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:34:51,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:34:51,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:34:51,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,647 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2023-09-01 06:34:51,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:34:51,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:34:51,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:34:51,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:34:51,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,695 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:34:51,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:34:51,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:34:51,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:34:51,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (1/1) ... [2023-09-01 06:34:51,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:34:51,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:34:51,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:34:51,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:34:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:34:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:34:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:34:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:34:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:34:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:34:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:34:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:34:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:34:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:34:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:34:51,781 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:34:51,965 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:34:51,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:34:52,243 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:34:52,249 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:34:52,250 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:34:52,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:34:52 BoogieIcfgContainer [2023-09-01 06:34:52,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:34:52,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:34:52,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:34:52,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:34:52,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:34:51" (1/3) ... [2023-09-01 06:34:52,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d20677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:34:52, skipping insertion in model container [2023-09-01 06:34:52,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:34:51" (2/3) ... [2023-09-01 06:34:52,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d20677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:34:52, skipping insertion in model container [2023-09-01 06:34:52,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:34:52" (3/3) ... [2023-09-01 06:34:52,269 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-09-01 06:34:52,276 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:34:52,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:34:52,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:34:52,285 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:34:52,365 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:34:52,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 136 transitions, 280 flow [2023-09-01 06:34:52,530 INFO L130 PetriNetUnfolder]: 23/177 cut-off events. [2023-09-01 06:34:52,530 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:34:52,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 177 events. 23/177 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 402 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-09-01 06:34:52,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 136 transitions, 280 flow [2023-09-01 06:34:52,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 127 transitions, 259 flow [2023-09-01 06:34:52,549 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:52,570 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 127 transitions, 259 flow [2023-09-01 06:34:52,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 127 transitions, 259 flow [2023-09-01 06:34:52,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 127 transitions, 259 flow [2023-09-01 06:34:52,621 INFO L130 PetriNetUnfolder]: 22/168 cut-off events. [2023-09-01 06:34:52,622 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:34:52,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 168 events. 22/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 390 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-09-01 06:34:52,626 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-09-01 06:34:56,106 INFO L134 LiptonReduction]: Checked pairs total: 6233 [2023-09-01 06:34:56,107 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-09-01 06:34:56,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:56,131 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:56,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:56,150 INFO L130 PetriNetUnfolder]: 5/30 cut-off events. [2023-09-01 06:34:56,164 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:34:56,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:56,166 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:34:56,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:56,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:56,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1716846697, now seen corresponding path program 1 times [2023-09-01 06:34:56,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:56,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170224568] [2023-09-01 06:34:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:56,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:56,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:56,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:56,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:56,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:56,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:34:56,364 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:56,366 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:56,367 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:56,367 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:34:56,393 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:34:56,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 174 transitions, 366 flow [2023-09-01 06:34:56,435 INFO L130 PetriNetUnfolder]: 40/292 cut-off events. [2023-09-01 06:34:56,436 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:34:56,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 40/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 844 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 179. Up to 9 conditions per place. [2023-09-01 06:34:56,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 174 transitions, 366 flow [2023-09-01 06:34:56,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 174 transitions, 366 flow [2023-09-01 06:34:56,441 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:56,442 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 174 transitions, 366 flow [2023-09-01 06:34:56,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 174 transitions, 366 flow [2023-09-01 06:34:56,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 174 transitions, 366 flow [2023-09-01 06:34:56,490 INFO L130 PetriNetUnfolder]: 40/292 cut-off events. [2023-09-01 06:34:56,491 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:34:56,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 40/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 844 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 179. Up to 9 conditions per place. [2023-09-01 06:34:56,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 11304 [2023-09-01 06:34:59,711 INFO L134 LiptonReduction]: Checked pairs total: 27295 [2023-09-01 06:34:59,712 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-09-01 06:34:59,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:59,717 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:59,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:59,725 INFO L130 PetriNetUnfolder]: 15/70 cut-off events. [2023-09-01 06:34:59,728 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:34:59,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:59,729 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:34:59,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:59,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1035136785, now seen corresponding path program 1 times [2023-09-01 06:34:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:59,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497784448] [2023-09-01 06:34:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:59,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:59,784 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:59,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:59,840 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:59,841 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:59,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:34:59,842 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:59,843 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:59,843 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:59,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:34:59,871 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:34:59,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 212 transitions, 454 flow [2023-09-01 06:34:59,925 INFO L130 PetriNetUnfolder]: 62/446 cut-off events. [2023-09-01 06:34:59,926 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:34:59,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 446 events. 62/446 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1493 event pairs, 1 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-09-01 06:34:59,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 212 transitions, 454 flow [2023-09-01 06:34:59,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 212 transitions, 454 flow [2023-09-01 06:34:59,939 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:59,939 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 212 transitions, 454 flow [2023-09-01 06:34:59,939 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 212 transitions, 454 flow [2023-09-01 06:34:59,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 212 transitions, 454 flow [2023-09-01 06:34:59,990 INFO L130 PetriNetUnfolder]: 62/446 cut-off events. [2023-09-01 06:34:59,990 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:34:59,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 446 events. 62/446 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1493 event pairs, 1 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-09-01 06:35:00,010 INFO L119 LiptonReduction]: Number of co-enabled transitions 21168 [2023-09-01 06:35:03,241 INFO L134 LiptonReduction]: Checked pairs total: 53310 [2023-09-01 06:35:03,241 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-09-01 06:35:03,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:03,244 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:03,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:03,252 INFO L130 PetriNetUnfolder]: 26/116 cut-off events. [2023-09-01 06:35:03,253 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:35:03,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:03,253 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:35:03,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:03,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2131542538, now seen corresponding path program 1 times [2023-09-01 06:35:03,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:03,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232583304] [2023-09-01 06:35:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:03,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:03,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:03,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:03,327 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:03,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:03,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:35:03,328 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:03,329 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:03,329 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:03,329 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:35:03,355 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:35:03,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 250 transitions, 544 flow [2023-09-01 06:35:03,470 INFO L130 PetriNetUnfolder]: 96/680 cut-off events. [2023-09-01 06:35:03,470 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:35:03,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 680 events. 96/680 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2608 event pairs, 6 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 466. Up to 32 conditions per place. [2023-09-01 06:35:03,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 250 transitions, 544 flow [2023-09-01 06:35:03,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 250 transitions, 544 flow [2023-09-01 06:35:03,481 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:03,481 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 250 transitions, 544 flow [2023-09-01 06:35:03,482 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 250 transitions, 544 flow [2023-09-01 06:35:03,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 250 transitions, 544 flow [2023-09-01 06:35:03,568 INFO L130 PetriNetUnfolder]: 96/680 cut-off events. [2023-09-01 06:35:03,568 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:35:03,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 680 events. 96/680 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2608 event pairs, 6 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 466. Up to 32 conditions per place. [2023-09-01 06:35:03,597 INFO L119 LiptonReduction]: Number of co-enabled transitions 33840 [2023-09-01 06:35:07,038 INFO L134 LiptonReduction]: Checked pairs total: 90792 [2023-09-01 06:35:07,038 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-09-01 06:35:07,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:07,041 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:07,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:07,053 INFO L130 PetriNetUnfolder]: 38/170 cut-off events. [2023-09-01 06:35:07,054 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:35:07,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:07,054 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:35:07,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:07,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2022448962, now seen corresponding path program 1 times [2023-09-01 06:35:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:07,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776547496] [2023-09-01 06:35:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:07,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:07,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:07,099 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:07,099 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:07,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:35:07,100 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:07,100 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:07,101 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:07,101 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:35:07,120 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:35:07,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 288 transitions, 636 flow [2023-09-01 06:35:07,267 INFO L130 PetriNetUnfolder]: 158/1078 cut-off events. [2023-09-01 06:35:07,267 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:35:07,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1078 events. 158/1078 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4898 event pairs, 23 based on Foata normal form. 0/844 useless extension candidates. Maximal degree in co-relation 725. Up to 80 conditions per place. [2023-09-01 06:35:07,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 288 transitions, 636 flow [2023-09-01 06:35:07,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 288 transitions, 636 flow [2023-09-01 06:35:07,291 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:07,291 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 288 transitions, 636 flow [2023-09-01 06:35:07,292 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 288 transitions, 636 flow [2023-09-01 06:35:07,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 288 transitions, 636 flow [2023-09-01 06:35:07,451 INFO L130 PetriNetUnfolder]: 158/1078 cut-off events. [2023-09-01 06:35:07,451 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:35:07,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1078 events. 158/1078 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4898 event pairs, 23 based on Foata normal form. 0/844 useless extension candidates. Maximal degree in co-relation 725. Up to 80 conditions per place. [2023-09-01 06:35:07,493 INFO L119 LiptonReduction]: Number of co-enabled transitions 49320 [2023-09-01 06:35:10,798 INFO L134 LiptonReduction]: Checked pairs total: 135988 [2023-09-01 06:35:10,798 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-09-01 06:35:10,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:10,800 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:10,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:10,818 INFO L130 PetriNetUnfolder]: 52/233 cut-off events. [2023-09-01 06:35:10,819 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:35:10,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:10,819 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:35:10,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:10,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:10,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1374109685, now seen corresponding path program 1 times [2023-09-01 06:35:10,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:10,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965030069] [2023-09-01 06:35:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:10,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:10,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:10,864 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:10,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:10,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:35:10,865 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:10,865 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:10,866 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:10,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:35:10,900 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:35:10,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 326 transitions, 730 flow [2023-09-01 06:35:11,222 INFO L130 PetriNetUnfolder]: 284/1812 cut-off events. [2023-09-01 06:35:11,222 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:35:11,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 1812 events. 284/1812 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10350 event pairs, 72 based on Foata normal form. 0/1430 useless extension candidates. Maximal degree in co-relation 1177. Up to 192 conditions per place. [2023-09-01 06:35:11,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 326 transitions, 730 flow [2023-09-01 06:35:11,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 326 transitions, 730 flow [2023-09-01 06:35:11,269 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:11,269 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 326 transitions, 730 flow [2023-09-01 06:35:11,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 326 transitions, 730 flow [2023-09-01 06:35:11,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 326 transitions, 730 flow [2023-09-01 06:35:11,577 INFO L130 PetriNetUnfolder]: 284/1812 cut-off events. [2023-09-01 06:35:11,578 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:35:11,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 1812 events. 284/1812 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10350 event pairs, 72 based on Foata normal form. 0/1430 useless extension candidates. Maximal degree in co-relation 1177. Up to 192 conditions per place. [2023-09-01 06:35:11,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 67608 [2023-09-01 06:35:15,420 INFO L134 LiptonReduction]: Checked pairs total: 192043 [2023-09-01 06:35:15,420 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-09-01 06:35:15,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:15,424 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:15,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:15,447 INFO L130 PetriNetUnfolder]: 69/311 cut-off events. [2023-09-01 06:35:15,448 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:35:15,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:15,448 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:35:15,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:15,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1451152160, now seen corresponding path program 1 times [2023-09-01 06:35:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:15,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820667261] [2023-09-01 06:35:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:15,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:15,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:15,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:15,552 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:15,552 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:15,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:35:15,553 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:15,553 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:15,555 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:15,556 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:35:15,592 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:35:15,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 364 transitions, 826 flow [2023-09-01 06:35:16,242 INFO L130 PetriNetUnfolder]: 554/3234 cut-off events. [2023-09-01 06:35:16,242 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:35:16,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 3234 events. 554/3234 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22323 event pairs, 201 based on Foata normal form. 0/2576 useless extension candidates. Maximal degree in co-relation 2030. Up to 448 conditions per place. [2023-09-01 06:35:16,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 364 transitions, 826 flow [2023-09-01 06:35:16,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 364 transitions, 826 flow [2023-09-01 06:35:16,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:16,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 364 transitions, 826 flow [2023-09-01 06:35:16,320 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 364 transitions, 826 flow [2023-09-01 06:35:16,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 364 transitions, 826 flow [2023-09-01 06:35:16,898 INFO L130 PetriNetUnfolder]: 554/3234 cut-off events. [2023-09-01 06:35:16,899 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:35:16,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 3234 events. 554/3234 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22323 event pairs, 201 based on Foata normal form. 0/2576 useless extension candidates. Maximal degree in co-relation 2030. Up to 448 conditions per place. [2023-09-01 06:35:17,120 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-09-01 06:35:20,950 INFO L134 LiptonReduction]: Checked pairs total: 258742 [2023-09-01 06:35:20,950 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-09-01 06:35:20,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:20,955 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:20,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:20,994 INFO L130 PetriNetUnfolder]: 91/413 cut-off events. [2023-09-01 06:35:20,994 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:35:20,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:20,995 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:35:20,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:20,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:20,995 INFO L85 PathProgramCache]: Analyzing trace with hash -166756406, now seen corresponding path program 1 times [2023-09-01 06:35:20,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:20,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943945199] [2023-09-01 06:35:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:20,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:21,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:21,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:21,087 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:21,087 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:21,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:35:21,088 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:21,089 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:21,089 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:21,089 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:35:21,116 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:35:21,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 402 transitions, 924 flow [2023-09-01 06:35:22,466 INFO L130 PetriNetUnfolder]: 1144/6064 cut-off events. [2023-09-01 06:35:22,467 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:35:22,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7149 conditions, 6064 events. 1144/6064 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 50030 event pairs, 522 based on Foata normal form. 0/4874 useless extension candidates. Maximal degree in co-relation 3716. Up to 1024 conditions per place. [2023-09-01 06:35:22,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 402 transitions, 924 flow [2023-09-01 06:35:22,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 402 transitions, 924 flow [2023-09-01 06:35:22,610 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:22,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 402 transitions, 924 flow [2023-09-01 06:35:22,611 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 402 transitions, 924 flow [2023-09-01 06:35:22,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 402 transitions, 924 flow [2023-09-01 06:35:23,597 INFO L130 PetriNetUnfolder]: 1144/6064 cut-off events. [2023-09-01 06:35:23,597 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:35:23,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7149 conditions, 6064 events. 1144/6064 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 50030 event pairs, 522 based on Foata normal form. 0/4874 useless extension candidates. Maximal degree in co-relation 3716. Up to 1024 conditions per place. [2023-09-01 06:35:23,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 112608 [2023-09-01 06:35:28,255 INFO L134 LiptonReduction]: Checked pairs total: 374510 [2023-09-01 06:35:28,255 INFO L136 LiptonReduction]: Total number of compositions: 292 [2023-09-01 06:35:28,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:28,257 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:28,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:28,294 INFO L130 PetriNetUnfolder]: 122/551 cut-off events. [2023-09-01 06:35:28,295 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:35:28,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:28,295 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:35:28,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:28,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:28,296 INFO L85 PathProgramCache]: Analyzing trace with hash 689294614, now seen corresponding path program 1 times [2023-09-01 06:35:28,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:28,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034686704] [2023-09-01 06:35:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:28,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:28,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:28,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:28,335 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:28,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:28,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:35:28,335 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:28,336 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:28,336 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:28,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:35:28,362 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:35:28,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 388 places, 440 transitions, 1024 flow [2023-09-01 06:35:30,711 INFO L130 PetriNetUnfolder]: 2438/11774 cut-off events. [2023-09-01 06:35:30,711 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:35:30,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14151 conditions, 11774 events. 2438/11774 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113262 event pairs, 1291 based on Foata normal form. 0/9540 useless extension candidates. Maximal degree in co-relation 7131. Up to 2304 conditions per place. [2023-09-01 06:35:30,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 388 places, 440 transitions, 1024 flow [2023-09-01 06:35:31,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 388 places, 440 transitions, 1024 flow [2023-09-01 06:35:31,065 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:31,065 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 388 places, 440 transitions, 1024 flow [2023-09-01 06:35:31,065 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 388 places, 440 transitions, 1024 flow [2023-09-01 06:35:31,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 388 places, 440 transitions, 1024 flow [2023-09-01 06:35:33,311 INFO L130 PetriNetUnfolder]: 2438/11774 cut-off events. [2023-09-01 06:35:33,311 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:35:33,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14151 conditions, 11774 events. 2438/11774 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113262 event pairs, 1291 based on Foata normal form. 0/9540 useless extension candidates. Maximal degree in co-relation 7131. Up to 2304 conditions per place. [2023-09-01 06:35:34,035 INFO L119 LiptonReduction]: Number of co-enabled transitions 139320 [2023-09-01 06:35:38,558 INFO L134 LiptonReduction]: Checked pairs total: 473624 [2023-09-01 06:35:38,558 INFO L136 LiptonReduction]: Total number of compositions: 318 [2023-09-01 06:35:38,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:38,560 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:38,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:38,624 INFO L130 PetriNetUnfolder]: 169/747 cut-off events. [2023-09-01 06:35:38,625 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:35:38,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:38,626 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:35:38,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:38,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:38,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2133885495, now seen corresponding path program 1 times [2023-09-01 06:35:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:38,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168695957] [2023-09-01 06:35:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:38,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:38,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:38,670 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:38,671 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:38,671 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:38,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:35:38,671 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:38,672 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:38,672 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:38,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:35:38,700 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:35:38,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 478 transitions, 1126 flow [2023-09-01 06:35:43,921 INFO L130 PetriNetUnfolder]: 5268/23372 cut-off events. [2023-09-01 06:35:43,921 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:35:44,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28578 conditions, 23372 events. 5268/23372 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 256897 event pairs, 3084 based on Foata normal form. 0/19070 useless extension candidates. Maximal degree in co-relation 14131. Up to 5120 conditions per place. [2023-09-01 06:35:44,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 478 transitions, 1126 flow [2023-09-01 06:35:44,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 421 places, 478 transitions, 1126 flow [2023-09-01 06:35:44,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:44,606 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 421 places, 478 transitions, 1126 flow [2023-09-01 06:35:44,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 421 places, 478 transitions, 1126 flow [2023-09-01 06:35:44,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 478 transitions, 1126 flow [2023-09-01 06:35:49,850 INFO L130 PetriNetUnfolder]: 5268/23372 cut-off events. [2023-09-01 06:35:49,850 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:35:50,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28578 conditions, 23372 events. 5268/23372 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 256897 event pairs, 3084 based on Foata normal form. 0/19070 useless extension candidates. Maximal degree in co-relation 14131. Up to 5120 conditions per place. [2023-09-01 06:35:51,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 168840 [2023-09-01 06:35:56,121 INFO L134 LiptonReduction]: Checked pairs total: 586719 [2023-09-01 06:35:56,121 INFO L136 LiptonReduction]: Total number of compositions: 338 [2023-09-01 06:35:56,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:56,123 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:56,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:56,199 INFO L130 PetriNetUnfolder]: 245/1036 cut-off events. [2023-09-01 06:35:56,199 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:35:56,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:56,199 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:35:56,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:56,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1476903538, now seen corresponding path program 1 times [2023-09-01 06:35:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:56,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287230075] [2023-09-01 06:35:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:56,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:56,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:56,260 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:56,260 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:35:56,260 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:56,261 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:56,261 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:56,261 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:35:56,293 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:35:56,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 516 transitions, 1230 flow [2023-09-01 06:36:08,058 INFO L130 PetriNetUnfolder]: 11426/47002 cut-off events. [2023-09-01 06:36:08,058 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:36:09,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58366 conditions, 47002 events. 11426/47002 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 574047 event pairs, 7181 based on Foata normal form. 0/38584 useless extension candidates. Maximal degree in co-relation 28556. Up to 11264 conditions per place. [2023-09-01 06:36:09,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 454 places, 516 transitions, 1230 flow [2023-09-01 06:36:10,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 516 transitions, 1230 flow [2023-09-01 06:36:10,165 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:36:10,165 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 454 places, 516 transitions, 1230 flow [2023-09-01 06:36:10,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 454 places, 516 transitions, 1230 flow [2023-09-01 06:36:10,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 516 transitions, 1230 flow [2023-09-01 06:36:21,512 INFO L130 PetriNetUnfolder]: 11426/47002 cut-off events. [2023-09-01 06:36:21,512 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:36:23,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58366 conditions, 47002 events. 11426/47002 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 574047 event pairs, 7181 based on Foata normal form. 0/38584 useless extension candidates. Maximal degree in co-relation 28556. Up to 11264 conditions per place. [2023-09-01 06:36:26,780 INFO L119 LiptonReduction]: Number of co-enabled transitions 201168 [2023-09-01 06:36:31,415 INFO L134 LiptonReduction]: Checked pairs total: 630701 [2023-09-01 06:36:31,416 INFO L136 LiptonReduction]: Total number of compositions: 359 [2023-09-01 06:36:31,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:36:31,417 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:36:31,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:36:31,543 INFO L130 PetriNetUnfolder]: 372/1474 cut-off events. [2023-09-01 06:36:31,543 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:36:31,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:36:31,543 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:36:31,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:36:31,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:36:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash 645974682, now seen corresponding path program 1 times [2023-09-01 06:36:31,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:36:31,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030933430] [2023-09-01 06:36:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:36:31,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:36:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:36:31,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:36:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:36:31,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:36:31,595 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:36:31,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:36:31,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:36:31,596 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:36:31,596 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:36:31,597 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:36:31,597 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:36:31,655 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:36:31,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 487 places, 554 transitions, 1336 flow [2023-09-01 06:36:59,292 INFO L130 PetriNetUnfolder]: 24752/95208 cut-off events. [2023-09-01 06:36:59,293 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:37:06,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119899 conditions, 95208 events. 24752/95208 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1279996 event pairs, 16398 based on Foata normal form. 0/78578 useless extension candidates. Maximal degree in co-relation 58342. Up to 24576 conditions per place. [2023-09-01 06:37:06,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 487 places, 554 transitions, 1336 flow [2023-09-01 06:37:08,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 487 places, 554 transitions, 1336 flow [2023-09-01 06:37:08,261 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:08,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 487 places, 554 transitions, 1336 flow [2023-09-01 06:37:08,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 487 places, 554 transitions, 1336 flow [2023-09-01 06:37:08,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 487 places, 554 transitions, 1336 flow [2023-09-01 06:37:34,444 INFO L130 PetriNetUnfolder]: 24752/95208 cut-off events. [2023-09-01 06:37:34,445 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:37:41,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119899 conditions, 95208 events. 24752/95208 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1279996 event pairs, 16398 based on Foata normal form. 0/78578 useless extension candidates. Maximal degree in co-relation 58342. Up to 24576 conditions per place. [2023-09-01 06:37:49,060 INFO L119 LiptonReduction]: Number of co-enabled transitions 236304 [2023-09-01 06:37:54,070 INFO L134 LiptonReduction]: Checked pairs total: 833144 [2023-09-01 06:37:54,070 INFO L136 LiptonReduction]: Total number of compositions: 389 [2023-09-01 06:37:54,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:54,072 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:54,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:54,266 INFO L130 PetriNetUnfolder]: 585/2149 cut-off events. [2023-09-01 06:37:54,267 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:37:54,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:54,267 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:37:54,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:54,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1512068415, now seen corresponding path program 1 times [2023-09-01 06:37:54,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:54,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468762173] [2023-09-01 06:37:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:54,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:54,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:54,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:54,326 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:54,326 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:54,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:37:54,327 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:54,330 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:54,330 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:54,330 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:37:54,368 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:37:54,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 520 places, 592 transitions, 1444 flow [2023-09-01 06:38:54,400 INFO L130 PetriNetUnfolder]: 53438/193590 cut-off events. [2023-09-01 06:38:54,400 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:39:09,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246969 conditions, 193590 events. 53438/193590 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2900. Compared 2820769 event pairs, 36879 based on Foata normal form. 0/160556 useless extension candidates. Maximal degree in co-relation 119873. Up to 53248 conditions per place. [2023-09-01 06:39:09,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 520 places, 592 transitions, 1444 flow [2023-09-01 06:39:13,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 520 places, 592 transitions, 1444 flow [2023-09-01 06:39:13,547 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:39:13,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 520 places, 592 transitions, 1444 flow [2023-09-01 06:39:13,547 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 520 places, 592 transitions, 1444 flow [2023-09-01 06:39:13,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 520 places, 592 transitions, 1444 flow [2023-09-01 06:40:12,648 INFO L130 PetriNetUnfolder]: 53438/193590 cut-off events. [2023-09-01 06:40:12,649 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:40:27,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246969 conditions, 193590 events. 53438/193590 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2900. Compared 2820769 event pairs, 36879 based on Foata normal form. 0/160556 useless extension candidates. Maximal degree in co-relation 119873. Up to 53248 conditions per place. [2023-09-01 06:40:53,095 INFO L119 LiptonReduction]: Number of co-enabled transitions 274248 [2023-09-01 06:40:58,327 INFO L134 LiptonReduction]: Checked pairs total: 870750 [2023-09-01 06:40:58,327 INFO L136 LiptonReduction]: Total number of compositions: 414 [2023-09-01 06:40:58,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:58,329 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ec31d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:58,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:58,641 INFO L130 PetriNetUnfolder]: 940/3197 cut-off events. [2023-09-01 06:40:58,642 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 06:40:58,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:58,642 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:40:58,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:58,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:58,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1112791748, now seen corresponding path program 1 times [2023-09-01 06:40:58,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:58,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297827756] [2023-09-01 06:40:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:58,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:58,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:58,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:58,695 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:58,695 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:58,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:40:58,695 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:58,696 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:58,696 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:58,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:40:58,733 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:40:58,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 553 places, 630 transitions, 1554 flow