./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe037.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/pthread-wmm/safe037.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 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:59:24,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:59:24,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:59:24,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:59:24,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:59:24,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:59:24,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:59:24,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:59:24,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:59:24,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:59:24,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:59:24,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:59:24,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:59:24,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:59:24,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:59:24,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:59:24,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:59:24,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:59:24,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:59:24,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:59:24,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:59:24,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:59:24,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:59:24,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:59:24,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:59:24,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:59:24,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:59:24,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:59:24,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:59:24,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:59:24,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:59:24,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:59:24,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:59:24,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:59:24,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:59:24,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:59:24,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:59:24,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:59:24,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:59:24,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:59:24,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:59:24,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:59:24,907 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:59:24,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:59:24,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:59:24,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:59:24,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:59:24,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:59:24,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:59:24,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:59:24,911 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:59:24,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:59:24,912 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:59:24,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:59:24,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:59:24,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:59:24,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:59:24,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:59:24,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:59:24,913 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:59:24,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:59:24,913 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:59:24,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:59:24,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:59:24,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:59:24,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:59:24,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:24,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:59:24,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:59:24,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:59:24,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:59:24,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:59:24,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:59:24,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:59:24,916 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:59:24,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:59:24,916 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:59:24,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:59:25,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:59:25,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:59:25,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:59:25,225 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:59:25,225 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:59:25,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037.i [2023-08-30 16:59:26,426 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:59:26,640 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:59:26,641 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i [2023-08-30 16:59:26,666 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1919a47b9/eb4d57f5daf44e0f94157ac5adddce07/FLAGc7d1729ac [2023-08-30 16:59:26,678 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1919a47b9/eb4d57f5daf44e0f94157ac5adddce07 [2023-08-30 16:59:26,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:59:26,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:59:26,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:26,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:59:26,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:59:26,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:26" (1/1) ... [2023-08-30 16:59:26,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79143c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:26, skipping insertion in model container [2023-08-30 16:59:26,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:26" (1/1) ... [2023-08-30 16:59:26,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:59:26,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:59:26,852 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i[941,954] [2023-08-30 16:59:27,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:27,030 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:59:27,047 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i[941,954] [2023-08-30 16:59:27,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:27,122 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:27,123 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:27,128 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:59:27,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27 WrapperNode [2023-08-30 16:59:27,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:27,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:27,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:59:27,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:59:27,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,187 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-30 16:59:27,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:27,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:59:27,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:59:27,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:59:27,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,229 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:59:27,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:59:27,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:59:27,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:59:27,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (1/1) ... [2023-08-30 16:59:27,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:27,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:59:27,269 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) [2023-08-30 16:59:27,276 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 [2023-08-30 16:59:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:59:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:59:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:59:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:59:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:59:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:59:27,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:59:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:59:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:59:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:59:27,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:59:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:59:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:59:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:59:27,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:59:27,315 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:59:27,485 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:59:27,487 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:59:27,689 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:59:27,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:59:27,695 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:59:27,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:27 BoogieIcfgContainer [2023-08-30 16:59:27,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:59:27,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:59:27,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:59:27,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:59:27,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:59:26" (1/3) ... [2023-08-30 16:59:27,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e413a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:27, skipping insertion in model container [2023-08-30 16:59:27,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:27" (2/3) ... [2023-08-30 16:59:27,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e413a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:27, skipping insertion in model container [2023-08-30 16:59:27,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:27" (3/3) ... [2023-08-30 16:59:27,705 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2023-08-30 16:59:27,711 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:59:27,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:59:27,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:59:27,720 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:59:27,771 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:59:27,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2023-08-30 16:59:27,837 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2023-08-30 16:59:27,837 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:59:27,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 16:59:27,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2023-08-30 16:59:27,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-08-30 16:59:27,848 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:59:27,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-30 16:59:27,858 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-30 16:59:27,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-08-30 16:59:27,878 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2023-08-30 16:59:27,879 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:59:27,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 16:59:27,880 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-30 16:59:29,802 INFO L134 LiptonReduction]: Checked pairs total: 1811 [2023-08-30 16:59:29,802 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-30 16:59:29,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:59:29,828 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;@2fee5387, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:59:29,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 16:59:29,840 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-08-30 16:59:29,840 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:59:29,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:29,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:29,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:59:29,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1206204255, now seen corresponding path program 1 times [2023-08-30 16:59:29,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:29,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370014925] [2023-08-30 16:59:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:30,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:30,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370014925] [2023-08-30 16:59:30,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370014925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:30,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:30,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:59:30,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708532028] [2023-08-30 16:59:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:30,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:59:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:59:30,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:59:30,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 146 [2023-08-30 16:59:30,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:30,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 146 [2023-08-30 16:59:30,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:30,572 INFO L130 PetriNetUnfolder]: 116/215 cut-off events. [2023-08-30 16:59:30,572 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 16:59:30,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 215 events. 116/215 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 717 event pairs, 32 based on Foata normal form. 8/220 useless extension candidates. Maximal degree in co-relation 441. Up to 171 conditions per place. [2023-08-30 16:59:30,577 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 20 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-08-30 16:59:30,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 117 flow [2023-08-30 16:59:30,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:59:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:59:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2023-08-30 16:59:30,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821917808219178 [2023-08-30 16:59:30,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2023-08-30 16:59:30,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2023-08-30 16:59:30,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:30,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2023-08-30 16:59:30,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,608 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 255 transitions. [2023-08-30 16:59:30,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 117 flow [2023-08-30 16:59:30,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:59:30,612 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 66 flow [2023-08-30 16:59:30,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-30 16:59:30,617 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-08-30 16:59:30,618 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 66 flow [2023-08-30 16:59:30,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:30,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:30,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:59:30,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:59:30,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:30,620 INFO L85 PathProgramCache]: Analyzing trace with hash 706570203, now seen corresponding path program 1 times [2023-08-30 16:59:30,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:30,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574038515] [2023-08-30 16:59:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:30,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:30,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:30,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574038515] [2023-08-30 16:59:30,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574038515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:30,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:30,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:59:30,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453348164] [2023-08-30 16:59:30,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:30,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:30,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:30,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:30,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 146 [2023-08-30 16:59:30,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:30,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 146 [2023-08-30 16:59:30,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:30,860 INFO L130 PetriNetUnfolder]: 68/143 cut-off events. [2023-08-30 16:59:30,861 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 16:59:30,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 143 events. 68/143 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 433 event pairs, 17 based on Foata normal form. 12/152 useless extension candidates. Maximal degree in co-relation 373. Up to 55 conditions per place. [2023-08-30 16:59:30,863 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 25 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2023-08-30 16:59:30,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 172 flow [2023-08-30 16:59:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2023-08-30 16:59:30,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577054794520548 [2023-08-30 16:59:30,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 337 transitions. [2023-08-30 16:59:30,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 337 transitions. [2023-08-30 16:59:30,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:30,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 337 transitions. [2023-08-30 16:59:30,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,870 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,870 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 66 flow. Second operand 4 states and 337 transitions. [2023-08-30 16:59:30,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 172 flow [2023-08-30 16:59:30,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:59:30,872 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 102 flow [2023-08-30 16:59:30,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-30 16:59:30,873 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-08-30 16:59:30,873 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 102 flow [2023-08-30 16:59:30,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:30,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:30,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:30,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:59:30,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:59:30,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2017830052, now seen corresponding path program 1 times [2023-08-30 16:59:30,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:30,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543429482] [2023-08-30 16:59:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:30,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:31,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:31,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543429482] [2023-08-30 16:59:31,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543429482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:31,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:31,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:59:31,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392604073] [2023-08-30 16:59:31,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:31,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:59:31,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:31,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:59:31,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:59:31,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 146 [2023-08-30 16:59:31,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:31,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 146 [2023-08-30 16:59:31,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:31,160 INFO L130 PetriNetUnfolder]: 194/364 cut-off events. [2023-08-30 16:59:31,161 INFO L131 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2023-08-30 16:59:31,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 364 events. 194/364 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1402 event pairs, 25 based on Foata normal form. 7/371 useless extension candidates. Maximal degree in co-relation 1072. Up to 202 conditions per place. [2023-08-30 16:59:31,164 INFO L137 encePairwiseOnDemand]: 143/146 looper letters, 34 selfloop transitions, 2 changer transitions 14/50 dead transitions. [2023-08-30 16:59:31,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 50 transitions, 330 flow [2023-08-30 16:59:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-08-30 16:59:31,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565068493150684 [2023-08-30 16:59:31,166 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-08-30 16:59:31,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-08-30 16:59:31,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:31,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-08-30 16:59:31,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,169 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,170 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 102 flow. Second operand 4 states and 325 transitions. [2023-08-30 16:59:31,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 50 transitions, 330 flow [2023-08-30 16:59:31,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 296 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 16:59:31,172 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 101 flow [2023-08-30 16:59:31,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-08-30 16:59:31,173 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-30 16:59:31,173 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 101 flow [2023-08-30 16:59:31,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:31,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:31,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:59:31,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:59:31,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2049581434, now seen corresponding path program 2 times [2023-08-30 16:59:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236800938] [2023-08-30 16:59:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:31,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:31,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236800938] [2023-08-30 16:59:31,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236800938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:31,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:31,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:59:31,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258432780] [2023-08-30 16:59:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:31,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:59:31,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:59:31,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:59:31,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 146 [2023-08-30 16:59:31,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:31,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 146 [2023-08-30 16:59:31,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:31,596 INFO L130 PetriNetUnfolder]: 77/166 cut-off events. [2023-08-30 16:59:31,596 INFO L131 PetriNetUnfolder]: For 172/186 co-relation queries the response was YES. [2023-08-30 16:59:31,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 166 events. 77/166 cut-off events. For 172/186 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 606 event pairs, 18 based on Foata normal form. 22/178 useless extension candidates. Maximal degree in co-relation 478. Up to 64 conditions per place. [2023-08-30 16:59:31,598 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 21 selfloop transitions, 10 changer transitions 2/36 dead transitions. [2023-08-30 16:59:31,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 201 flow [2023-08-30 16:59:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:59:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:59:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 413 transitions. [2023-08-30 16:59:31,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5657534246575342 [2023-08-30 16:59:31,600 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 413 transitions. [2023-08-30 16:59:31,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 413 transitions. [2023-08-30 16:59:31,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:31,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 413 transitions. [2023-08-30 16:59:31,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,604 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,604 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 101 flow. Second operand 5 states and 413 transitions. [2023-08-30 16:59:31,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 201 flow [2023-08-30 16:59:31,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:59:31,606 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 122 flow [2023-08-30 16:59:31,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2023-08-30 16:59:31,607 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-30 16:59:31,607 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 122 flow [2023-08-30 16:59:31,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:31,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:31,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:59:31,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:59:31,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1191157671, now seen corresponding path program 1 times [2023-08-30 16:59:31,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:31,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319083692] [2023-08-30 16:59:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:31,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:31,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:31,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319083692] [2023-08-30 16:59:31,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319083692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:31,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:31,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:59:31,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046334586] [2023-08-30 16:59:31,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:31,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:31,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:31,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:31,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:31,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 146 [2023-08-30 16:59:31,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:31,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 146 [2023-08-30 16:59:31,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:31,847 INFO L130 PetriNetUnfolder]: 133/265 cut-off events. [2023-08-30 16:59:31,848 INFO L131 PetriNetUnfolder]: For 373/373 co-relation queries the response was YES. [2023-08-30 16:59:31,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 265 events. 133/265 cut-off events. For 373/373 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1027 event pairs, 26 based on Foata normal form. 1/266 useless extension candidates. Maximal degree in co-relation 866. Up to 178 conditions per place. [2023-08-30 16:59:31,849 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 33 selfloop transitions, 4 changer transitions 11/48 dead transitions. [2023-08-30 16:59:31,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 360 flow [2023-08-30 16:59:31,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 323 transitions. [2023-08-30 16:59:31,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553082191780822 [2023-08-30 16:59:31,851 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 323 transitions. [2023-08-30 16:59:31,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 323 transitions. [2023-08-30 16:59:31,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:31,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 323 transitions. [2023-08-30 16:59:31,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,855 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,855 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 122 flow. Second operand 4 states and 323 transitions. [2023-08-30 16:59:31,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 360 flow [2023-08-30 16:59:31,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 302 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 16:59:31,858 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 125 flow [2023-08-30 16:59:31,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-08-30 16:59:31,859 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-30 16:59:31,859 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 125 flow [2023-08-30 16:59:31,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:31,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:31,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:31,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:59:31,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:59:31,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1024091367, now seen corresponding path program 2 times [2023-08-30 16:59:31,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:31,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98861180] [2023-08-30 16:59:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:31,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:32,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:32,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98861180] [2023-08-30 16:59:32,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98861180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:32,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:32,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:59:32,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797044424] [2023-08-30 16:59:32,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:32,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:32,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:32,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:32,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:32,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 146 [2023-08-30 16:59:32,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:32,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:32,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 146 [2023-08-30 16:59:32,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:32,083 INFO L130 PetriNetUnfolder]: 123/272 cut-off events. [2023-08-30 16:59:32,083 INFO L131 PetriNetUnfolder]: For 375/377 co-relation queries the response was YES. [2023-08-30 16:59:32,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 272 events. 123/272 cut-off events. For 375/377 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1186 event pairs, 54 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 902. Up to 103 conditions per place. [2023-08-30 16:59:32,085 INFO L137 encePairwiseOnDemand]: 143/146 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-30 16:59:32,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 297 flow [2023-08-30 16:59:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-30 16:59:32,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633561643835616 [2023-08-30 16:59:32,087 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-30 16:59:32,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-30 16:59:32,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:32,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-30 16:59:32,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:32,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:32,089 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:32,090 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 125 flow. Second operand 4 states and 329 transitions. [2023-08-30 16:59:32,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 297 flow [2023-08-30 16:59:32,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:59:32,092 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-30 16:59:32,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-30 16:59:32,093 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-30 16:59:32,093 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-30 16:59:32,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:32,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 16:59:32,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 16:59:32,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 16:59:32,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 16:59:32,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:59:32,100 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-30 16:59:32,104 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:59:32,105 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:59:32,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:59:32 BasicIcfg [2023-08-30 16:59:32,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:59:32,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:59:32,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:59:32,111 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:59:32,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:27" (3/4) ... [2023-08-30 16:59:32,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:59:32,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:59:32,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:59:32,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 16:59:32,124 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 16:59:32,125 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:59:32,125 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:59:32,125 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:59:32,162 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:59:32,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:59:32,163 INFO L158 Benchmark]: Toolchain (without parser) took 5482.42ms. Allocated memory was 69.2MB in the beginning and 144.7MB in the end (delta: 75.5MB). Free memory was 34.3MB in the beginning and 68.7MB in the end (delta: -34.4MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2023-08-30 16:59:32,164 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory was 46.3MB in the beginning and 46.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:59:32,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.84ms. Allocated memory is still 69.2MB. Free memory was 34.1MB in the beginning and 35.9MB in the end (delta: -1.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-08-30 16:59:32,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.49ms. Allocated memory is still 69.2MB. Free memory was 35.9MB in the beginning and 33.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:59:32,164 INFO L158 Benchmark]: Boogie Preprocessor took 48.18ms. Allocated memory is still 69.2MB. Free memory was 33.8MB in the beginning and 32.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:59:32,164 INFO L158 Benchmark]: RCFGBuilder took 460.54ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 32.3MB in the beginning and 64.9MB in the end (delta: -32.6MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-08-30 16:59:32,165 INFO L158 Benchmark]: TraceAbstraction took 4410.65ms. Allocated memory was 96.5MB in the beginning and 144.7MB in the end (delta: 48.2MB). Free memory was 64.2MB in the beginning and 71.9MB in the end (delta: -7.7MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2023-08-30 16:59:32,165 INFO L158 Benchmark]: Witness Printer took 52.13ms. Allocated memory is still 144.7MB. Free memory was 71.9MB in the beginning and 68.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:59:32,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory was 46.3MB in the beginning and 46.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.84ms. Allocated memory is still 69.2MB. Free memory was 34.1MB in the beginning and 35.9MB in the end (delta: -1.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.49ms. Allocated memory is still 69.2MB. Free memory was 35.9MB in the beginning and 33.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.18ms. Allocated memory is still 69.2MB. Free memory was 33.8MB in the beginning and 32.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.54ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 32.3MB in the beginning and 64.9MB in the end (delta: -32.6MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4410.65ms. Allocated memory was 96.5MB in the beginning and 144.7MB in the end (delta: 48.2MB). Free memory was 64.2MB in the beginning and 71.9MB in the end (delta: -7.7MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * Witness Printer took 52.13ms. Allocated memory is still 144.7MB. Free memory was 71.9MB in the beginning and 68.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 TotalNumberOfCompositions, 1811 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1079, independent: 1005, independent conditional: 0, independent unconditional: 1005, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 581, independent: 561, independent conditional: 0, independent unconditional: 561, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1079, independent: 444, independent conditional: 0, independent unconditional: 444, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 581, unknown conditional: 0, unknown unconditional: 581] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 109 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 352 IncrementalHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 14 mSDtfsCounter, 352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:59:32,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE