./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --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 10:50:48,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:50:48,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:50:48,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:50:48,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:50:48,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:50:48,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:50:48,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:50:48,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:50:48,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:50:48,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:50:48,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:50:48,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:50:48,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:50:48,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:50:48,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:50:48,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:50:48,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:50:48,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:50:48,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:50:48,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:50:48,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:50:48,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:50:48,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:50:48,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:50:48,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:50:48,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:50:48,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:50:48,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:50:48,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:50:48,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:50:48,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:50:48,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:50:48,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:50:48,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:50:48,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:50:48,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:50:48,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:50:48,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:50:48,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:50:48,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:50:48,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:50:48,783 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:50:48,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:50:48,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:50:48,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:50:48,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:50:48,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:50:48,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:50:48,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:50:48,786 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:50:48,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:50:48,787 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:50:48,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:50:48,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:50:48,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:50:48,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:50:48,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:50:48,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:50:48,789 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:50:48,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:50:48,789 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:50:48,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:50:48,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:50:48,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:50:48,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:50:48,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:50:48,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:50:48,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:50:48,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:50:48,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:50:48,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:50:48,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:50:48,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:50:48,791 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:50:48,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:50:48,792 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:50:48,792 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:50:49,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:50:49,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:50:49,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:50:49,088 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:50:49,088 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:50:49,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-09-01 10:50:50,234 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:50:50,518 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:50:50,519 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-09-01 10:50:50,534 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e6bc389/2ac1233c9231407f99f0fc1eb143d955/FLAG23a3d28cd [2023-09-01 10:50:50,557 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e6bc389/2ac1233c9231407f99f0fc1eb143d955 [2023-09-01 10:50:50,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:50:50,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:50:50,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:50:50,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:50:50,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:50:50,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:50:50" (1/1) ... [2023-09-01 10:50:50,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188a714e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:50, skipping insertion in model container [2023-09-01 10:50:50,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:50:50" (1/1) ... [2023-09-01 10:50:50,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:50:50,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:50:50,914 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_10-ptrmunge_racefree.i[30176,30189] [2023-09-01 10:50:50,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:50:50,956 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:50:50,993 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_10-ptrmunge_racefree.i[30176,30189] [2023-09-01 10:50:51,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:50:51,042 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:50:51,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51 WrapperNode [2023-09-01 10:50:51,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:50:51,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:50:51,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:50:51,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:50:51,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,080 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 220 [2023-09-01 10:50:51,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:50:51,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:50:51,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:50:51,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:50:51,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,104 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:50:51,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:50:51,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:50:51,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:50:51,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (1/1) ... [2023-09-01 10:50:51,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:50:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:50:51,158 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 10:50:51,172 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 10:50:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:50:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 10:50:51,197 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 10:50:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:50:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:50:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:50:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:50:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 10:50:51,198 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 10:50:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:50:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:50:51,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:50:51,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:50:51,200 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 10:50:51,350 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:50:51,351 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:50:51,727 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:50:51,738 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:50:51,738 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 10:50:51,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:50:51 BoogieIcfgContainer [2023-09-01 10:50:51,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:50:51,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:50:51,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:50:51,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:50:51,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:50:50" (1/3) ... [2023-09-01 10:50:51,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40049109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:50:51, skipping insertion in model container [2023-09-01 10:50:51,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:50:51" (2/3) ... [2023-09-01 10:50:51,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40049109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:50:51, skipping insertion in model container [2023-09-01 10:50:51,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:50:51" (3/3) ... [2023-09-01 10:50:51,748 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-09-01 10:50:51,755 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:50:51,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:50:51,763 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 10:50:51,763 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:50:51,858 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:50:51,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 456 flow [2023-09-01 10:50:52,039 INFO L130 PetriNetUnfolder]: 58/382 cut-off events. [2023-09-01 10:50:52,039 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-09-01 10:50:52,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 58/382 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1620 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-09-01 10:50:52,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 217 transitions, 456 flow [2023-09-01 10:50:52,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 217 transitions, 456 flow [2023-09-01 10:50:52,063 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:52,077 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 217 transitions, 456 flow [2023-09-01 10:50:52,079 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 217 transitions, 456 flow [2023-09-01 10:50:52,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 456 flow [2023-09-01 10:50:52,147 INFO L130 PetriNetUnfolder]: 58/382 cut-off events. [2023-09-01 10:50:52,147 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-09-01 10:50:52,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 58/382 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1620 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-09-01 10:50:52,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 18788 [2023-09-01 10:50:56,194 INFO L134 LiptonReduction]: Checked pairs total: 33979 [2023-09-01 10:50:56,194 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-09-01 10:50:56,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:56,211 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;@3c0b6dbc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:56,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:50:56,217 INFO L130 PetriNetUnfolder]: 2/29 cut-off events. [2023-09-01 10:50:56,217 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:50:56,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:56,217 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:50:56,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:56,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:56,222 INFO L85 PathProgramCache]: Analyzing trace with hash 132924624, now seen corresponding path program 1 times [2023-09-01 10:50:56,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:56,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493901007] [2023-09-01 10:50:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:56,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:56,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:56,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:56,367 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:56,368 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:50:56,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:50:56,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:50:56,370 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:56,372 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:50:56,373 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:56,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:50:56,418 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:50:56,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 345 transitions, 738 flow [2023-09-01 10:50:56,609 INFO L130 PetriNetUnfolder]: 197/1105 cut-off events. [2023-09-01 10:50:56,610 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-09-01 10:50:56,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 1105 events. 197/1105 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6613 event pairs, 1 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 673. Up to 32 conditions per place. [2023-09-01 10:50:56,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 345 transitions, 738 flow [2023-09-01 10:50:56,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 345 transitions, 738 flow [2023-09-01 10:50:56,636 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:56,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 345 transitions, 738 flow [2023-09-01 10:50:56,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 345 transitions, 738 flow [2023-09-01 10:50:56,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 345 transitions, 738 flow [2023-09-01 10:50:56,828 INFO L130 PetriNetUnfolder]: 197/1105 cut-off events. [2023-09-01 10:50:56,828 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-09-01 10:50:56,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 1105 events. 197/1105 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6613 event pairs, 1 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 673. Up to 32 conditions per place. [2023-09-01 10:50:56,888 INFO L119 LiptonReduction]: Number of co-enabled transitions 69784 [2023-09-01 10:51:01,989 INFO L134 LiptonReduction]: Checked pairs total: 148412 [2023-09-01 10:51:01,989 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-09-01 10:51:01,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:51:01,993 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;@3c0b6dbc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:51:01,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:51:02,003 INFO L130 PetriNetUnfolder]: 36/139 cut-off events. [2023-09-01 10:51:02,003 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 10:51:02,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:51:02,003 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:51:02,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:51:02,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:51:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1479840459, now seen corresponding path program 1 times [2023-09-01 10:51:02,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:51:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320538511] [2023-09-01 10:51:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:51:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:51:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:02,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:51:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:02,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:51:02,074 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:51:02,074 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:51:02,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:51:02,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:51:02,075 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:51:02,076 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:51:02,076 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:51:02,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:51:02,123 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:51:02,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 473 transitions, 1024 flow [2023-09-01 10:51:02,944 INFO L130 PetriNetUnfolder]: 664/3104 cut-off events. [2023-09-01 10:51:02,948 INFO L131 PetriNetUnfolder]: For 419/435 co-relation queries the response was YES. [2023-09-01 10:51:03,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3555 conditions, 3104 events. 664/3104 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 22666 event pairs, 52 based on Foata normal form. 0/2613 useless extension candidates. Maximal degree in co-relation 2007. Up to 192 conditions per place. [2023-09-01 10:51:03,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 398 places, 473 transitions, 1024 flow [2023-09-01 10:51:03,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 473 transitions, 1024 flow [2023-09-01 10:51:03,137 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:51:03,138 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 398 places, 473 transitions, 1024 flow [2023-09-01 10:51:03,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 398 places, 473 transitions, 1024 flow [2023-09-01 10:51:03,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 473 transitions, 1024 flow [2023-09-01 10:51:03,810 INFO L130 PetriNetUnfolder]: 664/3104 cut-off events. [2023-09-01 10:51:03,811 INFO L131 PetriNetUnfolder]: For 419/435 co-relation queries the response was YES. [2023-09-01 10:51:03,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3555 conditions, 3104 events. 664/3104 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 22666 event pairs, 52 based on Foata normal form. 0/2613 useless extension candidates. Maximal degree in co-relation 2007. Up to 192 conditions per place. [2023-09-01 10:51:04,153 INFO L119 LiptonReduction]: Number of co-enabled transitions 152988 [2023-09-01 10:51:09,946 INFO L134 LiptonReduction]: Checked pairs total: 338346 [2023-09-01 10:51:09,947 INFO L136 LiptonReduction]: Total number of compositions: 349 [2023-09-01 10:51:09,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:51:09,950 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;@3c0b6dbc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:51:09,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:51:09,971 INFO L130 PetriNetUnfolder]: 69/251 cut-off events. [2023-09-01 10:51:09,971 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-09-01 10:51:09,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:51:09,972 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:51:09,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:51:09,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:51:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash -215580219, now seen corresponding path program 1 times [2023-09-01 10:51:09,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:51:09,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823724247] [2023-09-01 10:51:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:51:09,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:51:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:10,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:51:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:10,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:51:10,025 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:51:10,025 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:51:10,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:51:10,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:51:10,026 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:51:10,027 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:51:10,027 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:51:10,027 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:51:10,094 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 10:51:10,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 502 places, 601 transitions, 1314 flow [2023-09-01 10:51:13,309 INFO L130 PetriNetUnfolder]: 2647/10051 cut-off events. [2023-09-01 10:51:13,310 INFO L131 PetriNetUnfolder]: For 2144/2174 co-relation queries the response was YES. [2023-09-01 10:51:13,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12216 conditions, 10051 events. 2647/10051 cut-off events. For 2144/2174 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 89279 event pairs, 626 based on Foata normal form. 0/8655 useless extension candidates. Maximal degree in co-relation 6424. Up to 1024 conditions per place. [2023-09-01 10:51:13,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 502 places, 601 transitions, 1314 flow [2023-09-01 10:51:13,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 502 places, 601 transitions, 1314 flow [2023-09-01 10:51:13,785 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:51:13,786 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 502 places, 601 transitions, 1314 flow [2023-09-01 10:51:13,786 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 502 places, 601 transitions, 1314 flow [2023-09-01 10:51:13,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 502 places, 601 transitions, 1314 flow [2023-09-01 10:51:16,365 INFO L130 PetriNetUnfolder]: 2647/10051 cut-off events. [2023-09-01 10:51:16,365 INFO L131 PetriNetUnfolder]: For 2144/2174 co-relation queries the response was YES. [2023-09-01 10:51:16,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12216 conditions, 10051 events. 2647/10051 cut-off events. For 2144/2174 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 89279 event pairs, 626 based on Foata normal form. 0/8655 useless extension candidates. Maximal degree in co-relation 6424. Up to 1024 conditions per place. [2023-09-01 10:51:17,421 INFO L119 LiptonReduction]: Number of co-enabled transitions 268400 [2023-09-01 10:51:24,114 INFO L134 LiptonReduction]: Checked pairs total: 611154 [2023-09-01 10:51:24,115 INFO L136 LiptonReduction]: Total number of compositions: 436 [2023-09-01 10:51:24,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:51:24,117 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;@3c0b6dbc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:51:24,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:51:24,139 INFO L130 PetriNetUnfolder]: 126/446 cut-off events. [2023-09-01 10:51:24,139 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-09-01 10:51:24,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:51:24,140 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:51:24,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:51:24,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:51:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash -337853554, now seen corresponding path program 1 times [2023-09-01 10:51:24,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:51:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515202643] [2023-09-01 10:51:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:51:24,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:51:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:24,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:51:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:24,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:51:24,200 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:51:24,200 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:51:24,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:51:24,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:51:24,201 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:51:24,202 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:51:24,202 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:51:24,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:51:24,258 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 10:51:24,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 606 places, 729 transitions, 1608 flow [2023-09-01 10:51:37,524 INFO L130 PetriNetUnfolder]: 11762/37498 cut-off events. [2023-09-01 10:51:37,524 INFO L131 PetriNetUnfolder]: For 10450/10486 co-relation queries the response was YES. [2023-09-01 10:51:39,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47924 conditions, 37498 events. 11762/37498 cut-off events. For 10450/10486 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 404541 event pairs, 4296 based on Foata normal form. 0/32863 useless extension candidates. Maximal degree in co-relation 23871. Up to 5120 conditions per place. [2023-09-01 10:51:39,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 606 places, 729 transitions, 1608 flow [2023-09-01 10:51:40,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 606 places, 729 transitions, 1608 flow [2023-09-01 10:51:40,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:51:40,030 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 606 places, 729 transitions, 1608 flow [2023-09-01 10:51:40,030 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 606 places, 729 transitions, 1608 flow [2023-09-01 10:51:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 606 places, 729 transitions, 1608 flow [2023-09-01 10:51:52,970 INFO L130 PetriNetUnfolder]: 11762/37498 cut-off events. [2023-09-01 10:51:52,970 INFO L131 PetriNetUnfolder]: For 10450/10486 co-relation queries the response was YES. [2023-09-01 10:51:54,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47924 conditions, 37498 events. 11762/37498 cut-off events. For 10450/10486 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 404541 event pairs, 4296 based on Foata normal form. 0/32863 useless extension candidates. Maximal degree in co-relation 23871. Up to 5120 conditions per place. [2023-09-01 10:51:57,594 INFO L119 LiptonReduction]: Number of co-enabled transitions 416020 [2023-09-01 10:52:04,653 INFO L134 LiptonReduction]: Checked pairs total: 955416 [2023-09-01 10:52:04,653 INFO L136 LiptonReduction]: Total number of compositions: 527 [2023-09-01 10:52:04,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:52:04,656 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;@3c0b6dbc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:52:04,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:52:04,713 INFO L130 PetriNetUnfolder]: 217/742 cut-off events. [2023-09-01 10:52:04,714 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-09-01 10:52:04,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:52:04,714 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:52:04,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:52:04,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:52:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash 689169378, now seen corresponding path program 1 times [2023-09-01 10:52:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:52:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759167570] [2023-09-01 10:52:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:52:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:52:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:52:04,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:52:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:52:04,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:52:04,780 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:52:04,780 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:52:04,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:52:04,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:52:04,781 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:52:04,782 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:52:04,782 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:52:04,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:52:04,858 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 10:52:04,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 710 places, 857 transitions, 1906 flow [2023-09-01 10:53:16,923 INFO L130 PetriNetUnfolder]: 53929/151109 cut-off events. [2023-09-01 10:53:16,923 INFO L131 PetriNetUnfolder]: For 49552/49615 co-relation queries the response was YES. [2023-09-01 10:53:30,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200538 conditions, 151109 events. 53929/151109 cut-off events. For 49552/49615 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 1912598 event pairs, 24930 based on Foata normal form. 0/133989 useless extension candidates. Maximal degree in co-relation 97530. Up to 24576 conditions per place. [2023-09-01 10:53:30,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 710 places, 857 transitions, 1906 flow [2023-09-01 10:53:36,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 710 places, 857 transitions, 1906 flow [2023-09-01 10:53:36,712 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:36,713 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 710 places, 857 transitions, 1906 flow [2023-09-01 10:53:36,713 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 710 places, 857 transitions, 1906 flow [2023-09-01 10:53:36,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 710 places, 857 transitions, 1906 flow [2023-09-01 10:54:43,308 INFO L130 PetriNetUnfolder]: 53929/151109 cut-off events. [2023-09-01 10:54:43,309 INFO L131 PetriNetUnfolder]: For 49552/49615 co-relation queries the response was YES. [2023-09-01 10:54:58,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200538 conditions, 151109 events. 53929/151109 cut-off events. For 49552/49615 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 1912598 event pairs, 24930 based on Foata normal form. 0/133989 useless extension candidates. Maximal degree in co-relation 97530. Up to 24576 conditions per place. [2023-09-01 10:55:22,326 INFO L119 LiptonReduction]: Number of co-enabled transitions 595848 [2023-09-01 10:55:30,283 INFO L134 LiptonReduction]: Checked pairs total: 1365956 [2023-09-01 10:55:30,283 INFO L136 LiptonReduction]: Total number of compositions: 611 [2023-09-01 10:55:30,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:30,286 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;@3c0b6dbc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:30,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:55:30,414 INFO L130 PetriNetUnfolder]: 408/1291 cut-off events. [2023-09-01 10:55:30,414 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2023-09-01 10:55:30,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:30,414 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:30,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:30,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:30,415 INFO L85 PathProgramCache]: Analyzing trace with hash 199639450, now seen corresponding path program 1 times [2023-09-01 10:55:30,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:30,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91819962] [2023-09-01 10:55:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:30,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:30,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:30,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:30,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:30,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:55:30,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:55:30,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:55:30,510 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:30,512 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:55:30,513 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:30,514 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:55:30,579 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-09-01 10:55:30,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 814 places, 985 transitions, 2208 flow