./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:59:11,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:59:11,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:59:11,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:59:11,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:59:11,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:59:11,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:59:11,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:59:11,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:59:11,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:59:11,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:59:11,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:59:11,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:59:11,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:59:11,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:59:11,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:59:11,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:59:11,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:59:11,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:59:11,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:59:11,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:59:11,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:59:11,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:59:11,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:59:11,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:59:11,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:59:11,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:59:11,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:59:11,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:59:11,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:59:11,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:59:11,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:59:11,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:59:11,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:59:11,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:59:11,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:59:11,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:59:11,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:59:11,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:59:11,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:59:11,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:59:11,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:59:11,490 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:59:11,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:59:11,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:59:11,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:59:11,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:59:11,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:59:11,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:59:11,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:59:11,493 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:59:11,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:59:11,494 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:59:11,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:59:11,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:59:11,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:59:11,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:59:11,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:59:11,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:59:11,495 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:59:11,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:59:11,495 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:59:11,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:59:11,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:59:11,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:59:11,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:59:11,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:11,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:59:11,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:59:11,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:59:11,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:59:11,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:59:11,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:59:11,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:59:11,497 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:59:11,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:59:11,497 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:59:11,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:59:11,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:59:11,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:59:11,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:59:11,736 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:59:11,736 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:59:11,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2023-09-01 09:59:12,637 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:59:12,862 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:59:12,862 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2023-09-01 09:59:12,878 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9955c9b79/68d112473f9f44e3bd9b95bfb8007bbb/FLAG1dbc443d6 [2023-09-01 09:59:12,889 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9955c9b79/68d112473f9f44e3bd9b95bfb8007bbb [2023-09-01 09:59:12,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:59:12,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:59:12,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:12,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:59:12,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:59:12,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:12" (1/1) ... [2023-09-01 09:59:12,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f25a0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:12, skipping insertion in model container [2023-09-01 09:59:12,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:12" (1/1) ... [2023-09-01 09:59:12,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:59:12,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:59:13,036 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/safe034_tso.i[945,958] [2023-09-01 09:59:13,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:13,122 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:59:13,129 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/safe034_tso.i[945,958] [2023-09-01 09:59:13,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:13,175 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:13,175 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:13,179 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:59:13,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13 WrapperNode [2023-09-01 09:59:13,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:13,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:13,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:59:13,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:59:13,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,214 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-09-01 09:59:13,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:13,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:59:13,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:59:13,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:59:13,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,254 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:59:13,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:59:13,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:59:13,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:59:13,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (1/1) ... [2023-09-01 09:59:13,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:13,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:59:13,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 09:59:13,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 09:59:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:59:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:59:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:59:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:59:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:59:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:59:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:59:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:59:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:59:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:59:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:59:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:59:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:59:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:59:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:59:13,316 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:59:13,455 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:59:13,457 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:59:13,633 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:59:13,639 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:59:13,640 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:59:13,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:13 BoogieIcfgContainer [2023-09-01 09:59:13,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:59:13,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:59:13,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:59:13,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:59:13,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:59:12" (1/3) ... [2023-09-01 09:59:13,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bad08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:13, skipping insertion in model container [2023-09-01 09:59:13,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:13" (2/3) ... [2023-09-01 09:59:13,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bad08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:13, skipping insertion in model container [2023-09-01 09:59:13,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:13" (3/3) ... [2023-09-01 09:59:13,649 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2023-09-01 09:59:13,654 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:59:13,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:59:13,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:59:13,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:59:13,730 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:59:13,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-09-01 09:59:13,807 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-09-01 09:59:13,807 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:13,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-09-01 09:59:13,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-09-01 09:59:13,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-09-01 09:59:13,818 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:59:13,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-09-01 09:59:13,834 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-09-01 09:59:13,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-09-01 09:59:13,855 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-09-01 09:59:13,855 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:13,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-09-01 09:59:13,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-09-01 09:59:15,627 INFO L134 LiptonReduction]: Checked pairs total: 2177 [2023-09-01 09:59:15,627 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-09-01 09:59:15,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:59:15,643 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;@66d6afb8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:59:15,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 09:59:15,646 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 09:59:15,646 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:15,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:15,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:15,647 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)] === [2023-09-01 09:59:15,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2054399275, now seen corresponding path program 1 times [2023-09-01 09:59:15,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:15,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232718665] [2023-09-01 09:59:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:15,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:16,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:16,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232718665] [2023-09-01 09:59:16,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232718665] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:16,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:16,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:59:16,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672881693] [2023-09-01 09:59:16,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:59:16,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:59:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:59:16,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 141 [2023-09-01 09:59:16,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 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) [2023-09-01 09:59:16,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:16,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 141 [2023-09-01 09:59:16,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:16,122 INFO L130 PetriNetUnfolder]: 202/344 cut-off events. [2023-09-01 09:59:16,122 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 09:59:16,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 344 events. 202/344 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1354 event pairs, 78 based on Foata normal form. 6/349 useless extension candidates. Maximal degree in co-relation 693. Up to 296 conditions per place. [2023-09-01 09:59:16,125 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 22 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-09-01 09:59:16,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 119 flow [2023-09-01 09:59:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-09-01 09:59:16,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6004728132387707 [2023-09-01 09:59:16,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-09-01 09:59:16,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-09-01 09:59:16,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:16,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-09-01 09:59:16,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2023-09-01 09:59:16,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-09-01 09:59:16,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-09-01 09:59:16,143 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 254 transitions. [2023-09-01 09:59:16,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 119 flow [2023-09-01 09:59:16,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:59:16,146 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-09-01 09:59:16,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, 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=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-09-01 09:59:16,149 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-09-01 09:59:16,149 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-09-01 09:59:16,150 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) [2023-09-01 09:59:16,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:16,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:16,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:59:16,150 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)] === [2023-09-01 09:59:16,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash -738132499, now seen corresponding path program 1 times [2023-09-01 09:59:16,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:16,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374540065] [2023-09-01 09:59:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:16,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:16,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374540065] [2023-09-01 09:59:16,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374540065] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:16,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:16,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:59:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48081619] [2023-09-01 09:59:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:59:16,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:16,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:59:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:59:16,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:59:16,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 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) [2023-09-01 09:59:16,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:16,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:59:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:16,468 INFO L130 PetriNetUnfolder]: 173/315 cut-off events. [2023-09-01 09:59:16,468 INFO L131 PetriNetUnfolder]: For 73/77 co-relation queries the response was YES. [2023-09-01 09:59:16,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 315 events. 173/315 cut-off events. For 73/77 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1237 event pairs, 39 based on Foata normal form. 36/344 useless extension candidates. Maximal degree in co-relation 732. Up to 184 conditions per place. [2023-09-01 09:59:16,470 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 22 selfloop transitions, 4 changer transitions 15/45 dead transitions. [2023-09-01 09:59:16,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 212 flow [2023-09-01 09:59:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:59:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:59:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2023-09-01 09:59:16,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801418439716312 [2023-09-01 09:59:16,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2023-09-01 09:59:16,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2023-09-01 09:59:16,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:16,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2023-09-01 09:59:16,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 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) [2023-09-01 09:59:16,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-09-01 09:59:16,476 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-09-01 09:59:16,476 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 5 states and 409 transitions. [2023-09-01 09:59:16,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 212 flow [2023-09-01 09:59:16,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 45 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:59:16,477 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 92 flow [2023-09-01 09:59:16,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-09-01 09:59:16,477 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-09-01 09:59:16,478 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 92 flow [2023-09-01 09:59:16,478 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) [2023-09-01 09:59:16,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:16,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:16,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:59:16,478 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)] === [2023-09-01 09:59:16,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1853572276, now seen corresponding path program 1 times [2023-09-01 09:59:16,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503852690] [2023-09-01 09:59:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:16,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503852690] [2023-09-01 09:59:16,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503852690] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:16,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:16,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:59:16,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687188025] [2023-09-01 09:59:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:16,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:59:16,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:59:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:59:16,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:59:16,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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) [2023-09-01 09:59:16,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:16,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:59:16,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:16,662 INFO L130 PetriNetUnfolder]: 101/201 cut-off events. [2023-09-01 09:59:16,662 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-09-01 09:59:16,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 201 events. 101/201 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 684 event pairs, 18 based on Foata normal form. 20/217 useless extension candidates. Maximal degree in co-relation 631. Up to 91 conditions per place. [2023-09-01 09:59:16,665 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 27 selfloop transitions, 7 changer transitions 14/52 dead transitions. [2023-09-01 09:59:16,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 304 flow [2023-09-01 09:59:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:59:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:59:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 491 transitions. [2023-09-01 09:59:16,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5803782505910166 [2023-09-01 09:59:16,667 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 491 transitions. [2023-09-01 09:59:16,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 491 transitions. [2023-09-01 09:59:16,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:16,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 491 transitions. [2023-09-01 09:59:16,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 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) [2023-09-01 09:59:16,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-09-01 09:59:16,672 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-09-01 09:59:16,672 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 92 flow. Second operand 6 states and 491 transitions. [2023-09-01 09:59:16,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 304 flow [2023-09-01 09:59:16,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 298 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 09:59:16,674 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 142 flow [2023-09-01 09:59:16,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2023-09-01 09:59:16,675 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-09-01 09:59:16,677 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 142 flow [2023-09-01 09:59:16,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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) [2023-09-01 09:59:16,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:16,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:16,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:59:16,678 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)] === [2023-09-01 09:59:16,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:16,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1422069978, now seen corresponding path program 1 times [2023-09-01 09:59:16,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:16,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133359697] [2023-09-01 09:59:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:16,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:16,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:16,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133359697] [2023-09-01 09:59:16,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133359697] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:16,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:16,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:59:16,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053992921] [2023-09-01 09:59:16,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:16,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:59:16,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:59:16,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:59:16,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:59:16,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2023-09-01 09:59:16,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:16,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:59:16,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:16,896 INFO L130 PetriNetUnfolder]: 66/139 cut-off events. [2023-09-01 09:59:16,896 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-09-01 09:59:16,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 139 events. 66/139 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 411 event pairs, 15 based on Foata normal form. 8/144 useless extension candidates. Maximal degree in co-relation 485. Up to 57 conditions per place. [2023-09-01 09:59:16,898 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 10 changer transitions 7/45 dead transitions. [2023-09-01 09:59:16,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 306 flow [2023-09-01 09:59:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:59:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:59:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 559 transitions. [2023-09-01 09:59:16,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5663627152988855 [2023-09-01 09:59:16,902 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 559 transitions. [2023-09-01 09:59:16,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 559 transitions. [2023-09-01 09:59:16,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:16,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 559 transitions. [2023-09-01 09:59:16,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.85714285714286) internal successors, (559), 7 states have internal predecessors, (559), 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) [2023-09-01 09:59:16,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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) [2023-09-01 09:59:16,905 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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) [2023-09-01 09:59:16,905 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 142 flow. Second operand 7 states and 559 transitions. [2023-09-01 09:59:16,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 306 flow [2023-09-01 09:59:16,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 270 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-09-01 09:59:16,910 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 144 flow [2023-09-01 09:59:16,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2023-09-01 09:59:16,911 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-09-01 09:59:16,911 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 144 flow [2023-09-01 09:59:16,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2023-09-01 09:59:16,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:16,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:16,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:59:16,913 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)] === [2023-09-01 09:59:16,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:16,913 INFO L85 PathProgramCache]: Analyzing trace with hash -825001738, now seen corresponding path program 1 times [2023-09-01 09:59:16,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:16,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063586437] [2023-09-01 09:59:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:16,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:17,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:17,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063586437] [2023-09-01 09:59:17,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063586437] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:17,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:17,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:59:17,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367021969] [2023-09-01 09:59:17,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:17,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:59:17,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:17,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:59:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:59:17,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:59:17,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 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) [2023-09-01 09:59:17,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:17,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:59:17,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:17,157 INFO L130 PetriNetUnfolder]: 197/370 cut-off events. [2023-09-01 09:59:17,157 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2023-09-01 09:59:17,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 370 events. 197/370 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1520 event pairs, 0 based on Foata normal form. 2/372 useless extension candidates. Maximal degree in co-relation 1218. Up to 158 conditions per place. [2023-09-01 09:59:17,159 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 40 selfloop transitions, 9 changer transitions 32/81 dead transitions. [2023-09-01 09:59:17,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 81 transitions, 620 flow [2023-09-01 09:59:17,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:59:17,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:59:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2023-09-01 09:59:17,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2023-09-01 09:59:17,161 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 477 transitions. [2023-09-01 09:59:17,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 477 transitions. [2023-09-01 09:59:17,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:17,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 477 transitions. [2023-09-01 09:59:17,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 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) [2023-09-01 09:59:17,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-09-01 09:59:17,164 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-09-01 09:59:17,164 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 144 flow. Second operand 6 states and 477 transitions. [2023-09-01 09:59:17,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 81 transitions, 620 flow [2023-09-01 09:59:17,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 81 transitions, 508 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-09-01 09:59:17,167 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 158 flow [2023-09-01 09:59:17,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-09-01 09:59:17,169 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-09-01 09:59:17,169 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 158 flow [2023-09-01 09:59:17,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 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) [2023-09-01 09:59:17,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:17,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:17,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:59:17,170 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)] === [2023-09-01 09:59:17,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1657175726, now seen corresponding path program 2 times [2023-09-01 09:59:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:17,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072266572] [2023-09-01 09:59:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:17,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:17,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:17,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072266572] [2023-09-01 09:59:17,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072266572] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:17,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:17,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:59:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625576419] [2023-09-01 09:59:17,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:17,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:59:17,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:59:17,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:59:17,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 141 [2023-09-01 09:59:17,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2023-09-01 09:59:17,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:17,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 141 [2023-09-01 09:59:17,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:17,336 INFO L130 PetriNetUnfolder]: 101/244 cut-off events. [2023-09-01 09:59:17,336 INFO L131 PetriNetUnfolder]: For 382/384 co-relation queries the response was YES. [2023-09-01 09:59:17,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 244 events. 101/244 cut-off events. For 382/384 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1085 event pairs, 43 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 871. Up to 94 conditions per place. [2023-09-01 09:59:17,337 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2023-09-01 09:59:17,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 344 flow [2023-09-01 09:59:17,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:59:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:59:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-09-01 09:59:17,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2023-09-01 09:59:17,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-09-01 09:59:17,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-09-01 09:59:17,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:17,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-09-01 09:59:17,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2023-09-01 09:59:17,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-09-01 09:59:17,341 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-09-01 09:59:17,342 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 158 flow. Second operand 4 states and 324 transitions. [2023-09-01 09:59:17,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 344 flow [2023-09-01 09:59:17,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 342 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 09:59:17,344 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-09-01 09:59:17,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-09-01 09:59:17,348 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-09-01 09:59:17,348 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-09-01 09:59:17,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2023-09-01 09:59:17,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 09:59:17,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 09:59:17,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 09:59:17,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 09:59:17,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:59:17,351 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-09-01 09:59:17,353 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:59:17,354 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:59:17,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:59:17 BasicIcfg [2023-09-01 09:59:17,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:59:17,357 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:59:17,357 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:59:17,357 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:59:17,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:13" (3/4) ... [2023-09-01 09:59:17,359 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:59:17,363 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:59:17,363 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:59:17,364 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-09-01 09:59:17,367 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 09:59:17,367 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:59:17,367 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:59:17,367 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:59:17,387 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:59:17,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:59:17,387 INFO L158 Benchmark]: Toolchain (without parser) took 4496.02ms. Allocated memory was 71.3MB in the beginning and 130.0MB in the end (delta: 58.7MB). Free memory was 46.7MB in the beginning and 54.4MB in the end (delta: -7.7MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2023-09-01 09:59:17,388 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 32.7MB in the beginning and 32.6MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:59:17,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.12ms. Allocated memory is still 71.3MB. Free memory was 46.4MB in the beginning and 44.7MB in the end (delta: 1.7MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-09-01 09:59:17,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.52ms. Allocated memory is still 71.3MB. Free memory was 44.7MB in the beginning and 42.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:59:17,388 INFO L158 Benchmark]: Boogie Preprocessor took 41.28ms. Allocated memory is still 71.3MB. Free memory was 42.6MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:59:17,389 INFO L158 Benchmark]: RCFGBuilder took 385.18ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.1MB in the beginning and 62.7MB in the end (delta: -21.7MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-09-01 09:59:17,389 INFO L158 Benchmark]: TraceAbstraction took 3712.82ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 62.1MB in the beginning and 57.6MB in the end (delta: 4.5MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2023-09-01 09:59:17,389 INFO L158 Benchmark]: Witness Printer took 29.88ms. Allocated memory is still 130.0MB. Free memory was 57.6MB in the beginning and 54.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:59:17,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 32.7MB in the beginning and 32.6MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.12ms. Allocated memory is still 71.3MB. Free memory was 46.4MB in the beginning and 44.7MB in the end (delta: 1.7MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.52ms. Allocated memory is still 71.3MB. Free memory was 44.7MB in the beginning and 42.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.28ms. Allocated memory is still 71.3MB. Free memory was 42.6MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.18ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.1MB in the beginning and 62.7MB in the end (delta: -21.7MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3712.82ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 62.1MB in the beginning and 57.6MB in the end (delta: 4.5MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. * Witness Printer took 29.88ms. Allocated memory is still 130.0MB. Free memory was 57.6MB in the beginning and 54.4MB 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: 1.8s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 2177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1284, independent: 1187, independent conditional: 0, independent unconditional: 1187, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1284, independent: 638, independent conditional: 0, independent unconditional: 638, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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, 108 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: 3.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 179 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 137 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 445 IncrementalHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 15 mSDtfsCounter, 445 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=5, InterpolantAutomatonStates: 31, 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, 0.9s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 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! [2023-09-01 09:59:17,406 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