./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/dekker.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-atomic/dekker.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 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 22:51:17,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 22:51:17,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 22:51:17,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 22:51:17,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 22:51:17,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 22:51:17,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 22:51:17,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 22:51:17,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 22:51:17,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 22:51:17,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 22:51:17,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 22:51:17,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 22:51:17,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 22:51:17,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 22:51:17,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 22:51:17,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 22:51:17,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 22:51:17,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 22:51:17,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 22:51:17,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 22:51:17,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 22:51:17,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 22:51:17,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 22:51:17,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 22:51:17,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 22:51:17,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 22:51:17,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 22:51:17,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 22:51:17,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 22:51:17,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 22:51:17,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 22:51:17,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 22:51:17,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 22:51:17,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 22:51:17,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 22:51:17,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 22:51:17,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 22:51:17,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 22:51:17,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 22:51:17,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 22:51:17,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 22:51:17,774 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 22:51:17,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 22:51:17,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 22:51:17,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 22:51:17,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 22:51:17,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 22:51:17,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 22:51:17,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 22:51:17,777 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 22:51:17,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 22:51:17,778 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 22:51:17,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 22:51:17,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 22:51:17,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 22:51:17,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 22:51:17,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 22:51:17,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 22:51:17,779 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 22:51:17,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 22:51:17,779 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 22:51:17,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 22:51:17,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 22:51:17,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 22:51:17,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 22:51:17,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:51:17,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 22:51:17,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 22:51:17,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 22:51:17,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 22:51:17,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 22:51:17,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 22:51:17,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 22:51:17,782 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 22:51:17,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 22:51:17,782 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 22:51:17,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 22:51:18,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 22:51:18,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 22:51:18,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 22:51:18,093 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 22:51:18,093 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 22:51:18,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2023-08-30 22:51:19,223 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 22:51:19,509 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 22:51:19,510 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2023-08-30 22:51:19,521 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/069040b51/ce8842d017d14724bb57509ff65a6dae/FLAG35cb24679 [2023-08-30 22:51:19,534 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/069040b51/ce8842d017d14724bb57509ff65a6dae [2023-08-30 22:51:19,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 22:51:19,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 22:51:19,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 22:51:19,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 22:51:19,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 22:51:19,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:51:19" (1/1) ... [2023-08-30 22:51:19,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356e2f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:19, skipping insertion in model container [2023-08-30 22:51:19,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:51:19" (1/1) ... [2023-08-30 22:51:19,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 22:51:19,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 22:51:19,738 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 22:51:19,883 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-atomic/dekker.i[31403,31416] [2023-08-30 22:51:19,892 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-atomic/dekker.i[32483,32496] [2023-08-30 22:51:19,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:51:19,910 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 22:51:19,932 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 22:51:19,975 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-atomic/dekker.i[31403,31416] [2023-08-30 22:51:19,980 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-atomic/dekker.i[32483,32496] [2023-08-30 22:51:19,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:51:20,019 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 22:51:20,020 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 22:51:20,020 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 22:51:20,026 INFO L208 MainTranslator]: Completed translation [2023-08-30 22:51:20,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20 WrapperNode [2023-08-30 22:51:20,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 22:51:20,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 22:51:20,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 22:51:20,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 22:51:20,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,083 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2023-08-30 22:51:20,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 22:51:20,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 22:51:20,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 22:51:20,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 22:51:20,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,127 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 22:51:20,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 22:51:20,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 22:51:20,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 22:51:20,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (1/1) ... [2023-08-30 22:51:20,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:51:20,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:20,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 22:51:20,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 22:51:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 22:51:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-30 22:51:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-30 22:51:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 22:51:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 22:51:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 22:51:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 22:51:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 22:51:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 22:51:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 22:51:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 22:51:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 22:51:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 22:51:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 22:51:20,213 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 22:51:20,335 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 22:51:20,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 22:51:20,510 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 22:51:20,516 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 22:51:20,518 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 22:51:20,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:51:20 BoogieIcfgContainer [2023-08-30 22:51:20,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 22:51:20,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 22:51:20,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 22:51:20,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 22:51:20,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:51:19" (1/3) ... [2023-08-30 22:51:20,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337cd010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:51:20, skipping insertion in model container [2023-08-30 22:51:20,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:20" (2/3) ... [2023-08-30 22:51:20,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337cd010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:51:20, skipping insertion in model container [2023-08-30 22:51:20,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:51:20" (3/3) ... [2023-08-30 22:51:20,530 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2023-08-30 22:51:20,544 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 22:51:20,552 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 22:51:20,552 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 22:51:20,553 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 22:51:20,657 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 22:51:20,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 100 transitions, 216 flow [2023-08-30 22:51:20,757 INFO L130 PetriNetUnfolder]: 13/98 cut-off events. [2023-08-30 22:51:20,759 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:51:20,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 13/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-08-30 22:51:20,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 100 transitions, 216 flow [2023-08-30 22:51:20,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 89 transitions, 187 flow [2023-08-30 22:51:20,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 22:51:20,792 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 89 transitions, 187 flow [2023-08-30 22:51:20,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 89 transitions, 187 flow [2023-08-30 22:51:20,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 89 transitions, 187 flow [2023-08-30 22:51:20,829 INFO L130 PetriNetUnfolder]: 13/89 cut-off events. [2023-08-30 22:51:20,829 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 22:51:20,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 89 events. 13/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-08-30 22:51:20,833 INFO L119 LiptonReduction]: Number of co-enabled transitions 2132 [2023-08-30 22:51:22,780 INFO L134 LiptonReduction]: Checked pairs total: 7839 [2023-08-30 22:51:22,781 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-08-30 22:51:22,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 22:51:22,798 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;@51939186, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 22:51:22,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 22:51:22,802 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 22:51:22,803 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:51:22,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:22,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 22:51:22,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 22:51:22,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash -966251382, now seen corresponding path program 1 times [2023-08-30 22:51:22,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:22,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195241504] [2023-08-30 22:51:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:22,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:23,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195241504] [2023-08-30 22:51:23,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195241504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:23,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:51:23,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:51:23,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36316924] [2023-08-30 22:51:23,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:23,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:51:23,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:51:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:51:23,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 162 [2023-08-30 22:51:23,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:23,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 162 [2023-08-30 22:51:23,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:23,214 INFO L130 PetriNetUnfolder]: 379/697 cut-off events. [2023-08-30 22:51:23,214 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-30 22:51:23,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 697 events. 379/697 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3559 event pairs, 131 based on Foata normal form. 57/542 useless extension candidates. Maximal degree in co-relation 1184. Up to 347 conditions per place. [2023-08-30 22:51:23,222 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 35 selfloop transitions, 3 changer transitions 1/52 dead transitions. [2023-08-30 22:51:23,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 194 flow [2023-08-30 22:51:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:51:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:51:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-30 22:51:23,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2023-08-30 22:51:23,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-30 22:51:23,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-30 22:51:23,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:23,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-30 22:51:23,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,260 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 91 flow. Second operand 3 states and 297 transitions. [2023-08-30 22:51:23,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 194 flow [2023-08-30 22:51:23,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 187 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 22:51:23,267 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 104 flow [2023-08-30 22:51:23,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-30 22:51:23,273 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 22:51:23,275 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 104 flow [2023-08-30 22:51:23,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:23,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:23,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 22:51:23,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 22:51:23,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:23,286 INFO L85 PathProgramCache]: Analyzing trace with hash 486242857, now seen corresponding path program 1 times [2023-08-30 22:51:23,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:23,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116925023] [2023-08-30 22:51:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:23,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:23,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116925023] [2023-08-30 22:51:23,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116925023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:23,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:51:23,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:51:23,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571331823] [2023-08-30 22:51:23,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:23,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:51:23,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:23,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:51:23,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:51:23,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 162 [2023-08-30 22:51:23,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:23,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 162 [2023-08-30 22:51:23,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:23,469 INFO L130 PetriNetUnfolder]: 343/670 cut-off events. [2023-08-30 22:51:23,469 INFO L131 PetriNetUnfolder]: For 104/106 co-relation queries the response was YES. [2023-08-30 22:51:23,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 670 events. 343/670 cut-off events. For 104/106 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3475 event pairs, 156 based on Foata normal form. 28/565 useless extension candidates. Maximal degree in co-relation 762. Up to 413 conditions per place. [2023-08-30 22:51:23,475 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 31 selfloop transitions, 2 changer transitions 5/51 dead transitions. [2023-08-30 22:51:23,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 203 flow [2023-08-30 22:51:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:51:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:51:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2023-08-30 22:51:23,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.602880658436214 [2023-08-30 22:51:23,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2023-08-30 22:51:23,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2023-08-30 22:51:23,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:23,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2023-08-30 22:51:23,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,482 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 104 flow. Second operand 3 states and 293 transitions. [2023-08-30 22:51:23,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 203 flow [2023-08-30 22:51:23,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 22:51:23,485 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 106 flow [2023-08-30 22:51:23,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-30 22:51:23,486 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-30 22:51:23,486 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 106 flow [2023-08-30 22:51:23,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:23,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:23,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 22:51:23,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 22:51:23,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash 991506848, now seen corresponding path program 1 times [2023-08-30 22:51:23,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:23,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796907042] [2023-08-30 22:51:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:23,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:23,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:23,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:23,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796907042] [2023-08-30 22:51:23,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796907042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:23,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:51:23,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:51:23,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568011652] [2023-08-30 22:51:23,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:23,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 22:51:23,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:23,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 22:51:23,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 22:51:23,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 22:51:23,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:23,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 22:51:23,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:23,718 INFO L130 PetriNetUnfolder]: 544/951 cut-off events. [2023-08-30 22:51:23,718 INFO L131 PetriNetUnfolder]: For 251/253 co-relation queries the response was YES. [2023-08-30 22:51:23,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 951 events. 544/951 cut-off events. For 251/253 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4725 event pairs, 130 based on Foata normal form. 18/787 useless extension candidates. Maximal degree in co-relation 1401. Up to 319 conditions per place. [2023-08-30 22:51:23,722 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 49 selfloop transitions, 9 changer transitions 5/74 dead transitions. [2023-08-30 22:51:23,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 314 flow [2023-08-30 22:51:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:51:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:51:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 469 transitions. [2023-08-30 22:51:23,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5790123456790124 [2023-08-30 22:51:23,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 469 transitions. [2023-08-30 22:51:23,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 469 transitions. [2023-08-30 22:51:23,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:23,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 469 transitions. [2023-08-30 22:51:23,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,728 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,728 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 106 flow. Second operand 5 states and 469 transitions. [2023-08-30 22:51:23,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 314 flow [2023-08-30 22:51:23,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 22:51:23,731 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 155 flow [2023-08-30 22:51:23,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-30 22:51:23,732 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2023-08-30 22:51:23,732 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 155 flow [2023-08-30 22:51:23,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:23,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:23,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 22:51:23,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 22:51:23,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1296093578, now seen corresponding path program 2 times [2023-08-30 22:51:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:23,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772499223] [2023-08-30 22:51:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:23,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:23,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:23,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772499223] [2023-08-30 22:51:23,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772499223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:23,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:51:23,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:51:23,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444523825] [2023-08-30 22:51:23,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:23,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 22:51:23,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:23,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 22:51:23,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 22:51:23,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 22:51:23,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:23,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 22:51:23,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:23,931 INFO L130 PetriNetUnfolder]: 696/1151 cut-off events. [2023-08-30 22:51:23,932 INFO L131 PetriNetUnfolder]: For 655/659 co-relation queries the response was YES. [2023-08-30 22:51:23,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2643 conditions, 1151 events. 696/1151 cut-off events. For 655/659 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5401 event pairs, 117 based on Foata normal form. 28/1023 useless extension candidates. Maximal degree in co-relation 1906. Up to 327 conditions per place. [2023-08-30 22:51:23,953 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2023-08-30 22:51:23,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 415 flow [2023-08-30 22:51:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:51:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:51:23,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2023-08-30 22:51:23,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5753086419753086 [2023-08-30 22:51:23,955 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 466 transitions. [2023-08-30 22:51:23,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 466 transitions. [2023-08-30 22:51:23,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:23,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 466 transitions. [2023-08-30 22:51:23,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,959 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,959 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 155 flow. Second operand 5 states and 466 transitions. [2023-08-30 22:51:23,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 415 flow [2023-08-30 22:51:23,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 81 transitions, 411 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 22:51:23,964 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-30 22:51:23,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-30 22:51:23,964 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-30 22:51:23,965 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-30 22:51:23,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:51:23,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-30 22:51:23,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-30 22:51:23,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-30 22:51:23,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-30 22:51:23,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-30 22:51:23,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-30 22:51:23,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 22:51:23,969 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-30 22:51:23,973 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 22:51:23,973 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 22:51:23,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:51:23 BasicIcfg [2023-08-30 22:51:23,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 22:51:23,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 22:51:23,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 22:51:23,977 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 22:51:23,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:51:20" (3/4) ... [2023-08-30 22:51:23,979 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 22:51:23,984 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-08-30 22:51:23,984 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-08-30 22:51:23,987 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-08-30 22:51:23,987 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 22:51:23,987 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 22:51:23,987 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 22:51:24,012 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 22:51:24,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 22:51:24,013 INFO L158 Benchmark]: Toolchain (without parser) took 4474.16ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 44.2MB in the beginning and 64.6MB in the end (delta: -20.4MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2023-08-30 22:51:24,013 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 22:51:24,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.70ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 55.2MB in the end (delta: -11.3MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-08-30 22:51:24,014 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.75ms. Allocated memory is still 81.8MB. Free memory was 55.2MB in the beginning and 53.2MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 22:51:24,014 INFO L158 Benchmark]: Boogie Preprocessor took 45.18ms. Allocated memory is still 81.8MB. Free memory was 53.2MB in the beginning and 51.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 22:51:24,014 INFO L158 Benchmark]: RCFGBuilder took 391.39ms. Allocated memory is still 81.8MB. Free memory was 51.7MB in the beginning and 38.0MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 22:51:24,014 INFO L158 Benchmark]: TraceAbstraction took 3453.07ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 37.1MB in the beginning and 67.5MB in the end (delta: -30.4MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2023-08-30 22:51:24,015 INFO L158 Benchmark]: Witness Printer took 35.16ms. Allocated memory is still 98.6MB. Free memory was 67.5MB in the beginning and 64.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 22:51:24,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.70ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 55.2MB in the end (delta: -11.3MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.75ms. Allocated memory is still 81.8MB. Free memory was 55.2MB in the beginning and 53.2MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.18ms. Allocated memory is still 81.8MB. Free memory was 53.2MB in the beginning and 51.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.39ms. Allocated memory is still 81.8MB. Free memory was 51.7MB in the beginning and 38.0MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3453.07ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 37.1MB in the beginning and 67.5MB in the end (delta: -30.4MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Witness Printer took 35.16ms. Allocated memory is still 98.6MB. Free memory was 67.5MB in the beginning and 64.6MB in the end (delta: 2.9MB). 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: 2.0s, 83 PlacesBefore, 40 PlacesAfterwards, 89 TransitionsBefore, 41 TransitionsAfterwards, 2132 CoEnabledTransitionPairs, 6 FixpointIterations, 22 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 11 ConcurrentYvCompositions, 5 ChoiceCompositions, 62 TotalNumberOfCompositions, 7839 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3488, independent: 3189, independent conditional: 0, independent unconditional: 3189, dependent: 299, dependent conditional: 0, dependent unconditional: 299, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1087, independent: 1050, independent conditional: 0, independent unconditional: 1050, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3488, independent: 2139, independent conditional: 0, independent unconditional: 2139, dependent: 262, dependent conditional: 0, dependent unconditional: 262, unknown: 1087, unknown conditional: 0, unknown unconditional: 1087] , Statistics on independence cache: Total cache size (in pairs): 238, Positive cache size: 211, Positive conditional cache size: 0, Positive unconditional cache size: 211, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: 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 5 procedures, 132 locations, 6 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: 3.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 355 IncrementalHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 15 mSDtfsCounter, 355 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 22:51:24,039 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