./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c --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/weaver/chl-time-subst.wvr.c -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 fbdf820325bad974beb5f3994ba78abc0ad853157d83dd91eac05e8acb05e8a2 --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 [2023-08-31 01:30:19,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:30:19,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:30:20,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:30:20,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:30:20,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:30:20,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:30:20,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:30:20,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:30:20,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:30:20,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:30:20,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:30:20,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:30:20,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:30:20,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:30:20,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:30:20,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:30:20,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:30:20,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:30:20,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:30:20,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:30:20,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:30:20,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:30:20,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:30:20,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:30:20,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:30:20,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:30:20,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:30:20,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:30:20,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:30:20,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:30:20,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:30:20,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:30:20,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:30:20,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:30:20,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:30:20,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:30:20,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:30:20,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:30:20,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:30:20,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:30:20,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:30:20,108 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:30:20,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:30:20,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:30:20,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:30:20,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:30:20,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:30:20,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:30:20,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:30:20,112 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:30:20,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:30:20,113 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:30:20,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:30:20,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:30:20,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:30:20,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:30:20,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:30:20,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:30:20,114 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:30:20,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:30:20,114 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:30:20,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:30:20,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:30:20,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:30:20,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:30:20,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:30:20,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:30:20,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:30:20,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:30:20,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:30:20,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:30:20,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:30:20,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:30:20,117 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:30:20,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:30:20,117 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:30:20,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbdf820325bad974beb5f3994ba78abc0ad853157d83dd91eac05e8acb05e8a2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:30:20,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:30:20,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:30:20,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:30:20,440 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:30:20,440 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:30:20,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2023-08-31 01:30:21,654 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:30:21,843 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:30:21,844 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2023-08-31 01:30:21,849 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77940a7ac/caec160bee6944f382c9b616e7435682/FLAGefd6bfc49 [2023-08-31 01:30:21,860 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77940a7ac/caec160bee6944f382c9b616e7435682 [2023-08-31 01:30:21,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:30:21,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:30:21,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:30:21,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:30:21,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:30:21,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:30:21" (1/1) ... [2023-08-31 01:30:21,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddd8a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:21, skipping insertion in model container [2023-08-31 01:30:21,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:30:21" (1/1) ... [2023-08-31 01:30:21,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:30:21,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:30:22,022 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c[2879,2892] [2023-08-31 01:30:22,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:30:22,036 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:30:22,058 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c[2879,2892] [2023-08-31 01:30:22,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:30:22,067 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:30:22,067 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:30:22,073 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:30:22,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22 WrapperNode [2023-08-31 01:30:22,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:30:22,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:30:22,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:30:22,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:30:22,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,118 INFO L138 Inliner]: procedures = 23, calls = 39, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 223 [2023-08-31 01:30:22,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:30:22,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:30:22,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:30:22,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:30:22,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,145 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:30:22,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:30:22,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:30:22,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:30:22,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (1/1) ... [2023-08-31 01:30:22,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:30:22,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:30:22,191 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) [2023-08-31 01:30:22,214 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 [2023-08-31 01:30:22,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:30:22,233 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:30:22,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:30:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:30:22,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:30:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:30:22,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:30:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:30:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:30:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:30:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 01:30:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 01:30:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:30:22,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:30:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:30:22,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:30:22,239 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:30:22,340 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:30:22,341 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:30:22,714 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:30:22,990 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:30:22,990 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 01:30:22,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:30:22 BoogieIcfgContainer [2023-08-31 01:30:22,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:30:22,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:30:22,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:30:22,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:30:22,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:30:21" (1/3) ... [2023-08-31 01:30:22,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c17380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:30:22, skipping insertion in model container [2023-08-31 01:30:22,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:22" (2/3) ... [2023-08-31 01:30:22,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c17380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:30:22, skipping insertion in model container [2023-08-31 01:30:22,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:30:22" (3/3) ... [2023-08-31 01:30:22,999 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-subst.wvr.c [2023-08-31 01:30:23,006 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:30:23,014 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:30:23,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:30:23,014 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:30:23,081 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:30:23,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 114 transitions, 252 flow [2023-08-31 01:30:23,194 INFO L130 PetriNetUnfolder]: 1/111 cut-off events. [2023-08-31 01:30:23,194 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:30:23,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 111 events. 1/111 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-31 01:30:23,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 114 transitions, 252 flow [2023-08-31 01:30:23,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 101 transitions, 220 flow [2023-08-31 01:30:23,205 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:30:23,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 101 transitions, 220 flow [2023-08-31 01:30:23,217 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 101 transitions, 220 flow [2023-08-31 01:30:23,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 101 transitions, 220 flow [2023-08-31 01:30:23,237 INFO L130 PetriNetUnfolder]: 1/101 cut-off events. [2023-08-31 01:30:23,237 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:30:23,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 1/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2023-08-31 01:30:23,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 270 [2023-08-31 01:30:27,728 INFO L134 LiptonReduction]: Checked pairs total: 405 [2023-08-31 01:30:27,728 INFO L136 LiptonReduction]: Total number of compositions: 90 [2023-08-31 01:30:27,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:30:27,758 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;@27ad01b6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:30:27,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:30:27,768 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-31 01:30:27,768 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:30:27,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:27,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:27,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:30:27,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:27,774 INFO L85 PathProgramCache]: Analyzing trace with hash 335609193, now seen corresponding path program 1 times [2023-08-31 01:30:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:27,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657397819] [2023-08-31 01:30:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:27,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:30:29,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:29,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657397819] [2023-08-31 01:30:29,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657397819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:29,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:29,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:30:29,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104352712] [2023-08-31 01:30:29,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:29,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:30:29,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:30:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:30:29,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-08-31 01:30:29,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:29,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:29,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-08-31 01:30:29,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:30,198 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-08-31 01:30:30,199 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 01:30:30,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 263 event pairs, 17 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 130. Up to 45 conditions per place. [2023-08-31 01:30:30,201 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 28 selfloop transitions, 2 changer transitions 7/37 dead transitions. [2023-08-31 01:30:30,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 190 flow [2023-08-31 01:30:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:30:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:30:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2023-08-31 01:30:30,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453921568627451 [2023-08-31 01:30:30,223 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2023-08-31 01:30:30,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2023-08-31 01:30:30,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:30,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2023-08-31 01:30:30,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 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) [2023-08-31 01:30:30,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:30,239 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:30,241 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 5 states and 463 transitions. [2023-08-31 01:30:30,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 190 flow [2023-08-31 01:30:30,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:30:30,246 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 53 flow [2023-08-31 01:30:30,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=53, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-31 01:30:30,251 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-31 01:30:30,251 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 53 flow [2023-08-31 01:30:30,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:30,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:30,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:30,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:30:30,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:30:30,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:30,263 INFO L85 PathProgramCache]: Analyzing trace with hash 604898643, now seen corresponding path program 2 times [2023-08-31 01:30:30,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:30,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178310220] [2023-08-31 01:30:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:30:31,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178310220] [2023-08-31 01:30:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178310220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:31,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:31,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:30:31,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175329009] [2023-08-31 01:30:31,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:31,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:30:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:30:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:30:31,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-08-31 01:30:31,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:31,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:31,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-08-31 01:30:31,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:31,797 INFO L130 PetriNetUnfolder]: 38/116 cut-off events. [2023-08-31 01:30:31,797 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-08-31 01:30:31,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 116 events. 38/116 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 408 event pairs, 13 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 288. Up to 58 conditions per place. [2023-08-31 01:30:31,798 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 28 selfloop transitions, 3 changer transitions 9/40 dead transitions. [2023-08-31 01:30:31,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 198 flow [2023-08-31 01:30:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:30:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:30:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2023-08-31 01:30:31,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2023-08-31 01:30:31,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2023-08-31 01:30:31,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2023-08-31 01:30:31,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:31,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2023-08-31 01:30:31,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-08-31 01:30:31,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:31,804 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:31,804 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 53 flow. Second operand 5 states and 465 transitions. [2023-08-31 01:30:31,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 198 flow [2023-08-31 01:30:31,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 40 transitions, 191 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-31 01:30:31,806 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 70 flow [2023-08-31 01:30:31,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-08-31 01:30:31,807 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-08-31 01:30:31,807 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 70 flow [2023-08-31 01:30:31,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:31,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:31,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:31,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:30:31,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:30:31,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:31,809 INFO L85 PathProgramCache]: Analyzing trace with hash -455877467, now seen corresponding path program 3 times [2023-08-31 01:30:31,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:31,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518718663] [2023-08-31 01:30:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:31,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:30:32,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518718663] [2023-08-31 01:30:32,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518718663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:32,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:30:32,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919759725] [2023-08-31 01:30:32,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:32,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:30:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:30:32,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:30:32,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-08-31 01:30:32,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:32,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:32,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-08-31 01:30:32,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:33,107 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-08-31 01:30:33,108 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2023-08-31 01:30:33,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 103 events. 33/103 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 10 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 312. Up to 36 conditions per place. [2023-08-31 01:30:33,109 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 28 selfloop transitions, 3 changer transitions 11/42 dead transitions. [2023-08-31 01:30:33,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 233 flow [2023-08-31 01:30:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:30:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:30:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2023-08-31 01:30:33,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2023-08-31 01:30:33,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2023-08-31 01:30:33,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2023-08-31 01:30:33,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:33,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2023-08-31 01:30:33,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-08-31 01:30:33,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:33,123 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:33,123 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 70 flow. Second operand 5 states and 465 transitions. [2023-08-31 01:30:33,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 233 flow [2023-08-31 01:30:33,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 42 transitions, 223 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-31 01:30:33,126 INFO L231 Difference]: Finished difference. Result has 35 places, 18 transitions, 80 flow [2023-08-31 01:30:33,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=18} [2023-08-31 01:30:33,127 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-08-31 01:30:33,127 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 18 transitions, 80 flow [2023-08-31 01:30:33,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:33,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:33,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:33,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:30:33,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:30:33,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash -447135759, now seen corresponding path program 4 times [2023-08-31 01:30:33,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:33,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985690934] [2023-08-31 01:30:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:33,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:30:33,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985690934] [2023-08-31 01:30:33,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985690934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:33,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:33,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:30:33,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709570256] [2023-08-31 01:30:33,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:33,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:30:33,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:33,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:30:33,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:30:33,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-08-31 01:30:33,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 18 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:33,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:33,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-08-31 01:30:33,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:34,059 INFO L130 PetriNetUnfolder]: 24/74 cut-off events. [2023-08-31 01:30:34,059 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2023-08-31 01:30:34,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 74 events. 24/74 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 177 event pairs, 9 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 257. Up to 35 conditions per place. [2023-08-31 01:30:34,060 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 16 selfloop transitions, 1 changer transitions 17/34 dead transitions. [2023-08-31 01:30:34,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 201 flow [2023-08-31 01:30:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:30:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:30:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2023-08-31 01:30:34,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-31 01:30:34,063 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 459 transitions. [2023-08-31 01:30:34,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 459 transitions. [2023-08-31 01:30:34,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:34,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 459 transitions. [2023-08-31 01:30:34,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2023-08-31 01:30:34,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:34,067 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:34,067 INFO L175 Difference]: Start difference. First operand has 35 places, 18 transitions, 80 flow. Second operand 5 states and 459 transitions. [2023-08-31 01:30:34,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 201 flow [2023-08-31 01:30:34,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 186 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-31 01:30:34,070 INFO L231 Difference]: Finished difference. Result has 36 places, 16 transitions, 61 flow [2023-08-31 01:30:34,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=36, PETRI_TRANSITIONS=16} [2023-08-31 01:30:34,071 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-31 01:30:34,071 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 16 transitions, 61 flow [2023-08-31 01:30:34,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:34,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:34,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:34,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:30:34,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:30:34,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:34,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1841161101, now seen corresponding path program 5 times [2023-08-31 01:30:34,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:34,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271067138] [2023-08-31 01:30:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:30:35,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271067138] [2023-08-31 01:30:35,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271067138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:35,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:35,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:30:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571900477] [2023-08-31 01:30:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:35,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:30:35,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:35,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:30:35,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:30:35,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-08-31 01:30:35,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 16 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:35,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:35,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-08-31 01:30:35,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:35,542 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-31 01:30:35,543 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-31 01:30:35,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 40 events. 8/40 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 130. Up to 19 conditions per place. [2023-08-31 01:30:35,543 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 16 selfloop transitions, 1 changer transitions 11/28 dead transitions. [2023-08-31 01:30:35,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 162 flow [2023-08-31 01:30:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:30:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:30:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-08-31 01:30:35,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44509803921568625 [2023-08-31 01:30:35,546 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-08-31 01:30:35,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-08-31 01:30:35,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:35,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-08-31 01:30:35,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2023-08-31 01:30:35,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:35,549 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:35,549 INFO L175 Difference]: Start difference. First operand has 36 places, 16 transitions, 61 flow. Second operand 5 states and 454 transitions. [2023-08-31 01:30:35,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 162 flow [2023-08-31 01:30:35,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 127 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-31 01:30:35,551 INFO L231 Difference]: Finished difference. Result has 30 places, 16 transitions, 49 flow [2023-08-31 01:30:35,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=30, PETRI_TRANSITIONS=16} [2023-08-31 01:30:35,552 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-31 01:30:35,552 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 16 transitions, 49 flow [2023-08-31 01:30:35,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:35,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:35,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:35,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:30:35,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:30:35,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:35,553 INFO L85 PathProgramCache]: Analyzing trace with hash 325050265, now seen corresponding path program 6 times [2023-08-31 01:30:35,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:35,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422575395] [2023-08-31 01:30:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:35,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:30:36,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:36,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422575395] [2023-08-31 01:30:36,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422575395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:36,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:36,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:30:36,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312491598] [2023-08-31 01:30:36,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:36,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:30:36,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:36,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:30:36,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:30:36,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-08-31 01:30:36,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 16 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:36,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:36,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-08-31 01:30:36,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:36,858 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2023-08-31 01:30:36,858 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-31 01:30:36,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 28 events. 6/28 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 3 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 77. Up to 15 conditions per place. [2023-08-31 01:30:36,858 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-31 01:30:36,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 94 flow [2023-08-31 01:30:36,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:30:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:30:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2023-08-31 01:30:36,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4362745098039216 [2023-08-31 01:30:36,860 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2023-08-31 01:30:36,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2023-08-31 01:30:36,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:36,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2023-08-31 01:30:36,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2023-08-31 01:30:36,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:36,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-08-31 01:30:36,863 INFO L175 Difference]: Start difference. First operand has 30 places, 16 transitions, 49 flow. Second operand 5 states and 445 transitions. [2023-08-31 01:30:36,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 94 flow [2023-08-31 01:30:36,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 90 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:30:36,864 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-31 01:30:36,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-31 01:30:36,865 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-31 01:30:36,865 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-31 01:30:36,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-08-31 01:30:36,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-31 01:30:36,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-31 01:30:36,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-31 01:30:36,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-31 01:30:36,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:30:36,869 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-31 01:30:36,871 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 01:30:36,872 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 01:30:36,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 01:30:36 BasicIcfg [2023-08-31 01:30:36,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 01:30:36,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 01:30:36,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 01:30:36,875 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 01:30:36,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:30:22" (3/4) ... [2023-08-31 01:30:36,877 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 01:30:36,882 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 01:30:36,882 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 01:30:36,882 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-31 01:30:36,886 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-31 01:30:36,886 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 01:30:36,886 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 01:30:36,886 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 01:30:36,931 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 01:30:36,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 01:30:36,932 INFO L158 Benchmark]: Toolchain (without parser) took 15068.18ms. Allocated memory was 92.3MB in the beginning and 285.2MB in the end (delta: 192.9MB). Free memory was 72.1MB in the beginning and 217.6MB in the end (delta: -145.5MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2023-08-31 01:30:36,932 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 01:30:36,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.68ms. Allocated memory is still 92.3MB. Free memory was 71.8MB in the beginning and 60.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-31 01:30:36,932 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.68ms. Allocated memory is still 92.3MB. Free memory was 60.3MB in the beginning and 58.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:30:36,933 INFO L158 Benchmark]: Boogie Preprocessor took 29.95ms. Allocated memory is still 92.3MB. Free memory was 58.0MB in the beginning and 56.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:30:36,933 INFO L158 Benchmark]: RCFGBuilder took 842.59ms. Allocated memory is still 92.3MB. Free memory was 56.4MB in the beginning and 47.2MB in the end (delta: 9.3MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2023-08-31 01:30:36,933 INFO L158 Benchmark]: TraceAbstraction took 13880.11ms. Allocated memory was 92.3MB in the beginning and 285.2MB in the end (delta: 192.9MB). Free memory was 46.6MB in the beginning and 220.7MB in the end (delta: -174.1MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-08-31 01:30:36,934 INFO L158 Benchmark]: Witness Printer took 56.76ms. Allocated memory is still 285.2MB. Free memory was 220.7MB in the beginning and 217.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:30:36,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.68ms. Allocated memory is still 92.3MB. Free memory was 71.8MB in the beginning and 60.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.68ms. Allocated memory is still 92.3MB. Free memory was 60.3MB in the beginning and 58.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.95ms. Allocated memory is still 92.3MB. Free memory was 58.0MB in the beginning and 56.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 842.59ms. Allocated memory is still 92.3MB. Free memory was 56.4MB in the beginning and 47.2MB in the end (delta: 9.3MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13880.11ms. Allocated memory was 92.3MB in the beginning and 285.2MB in the end (delta: 192.9MB). Free memory was 46.6MB in the beginning and 220.7MB in the end (delta: -174.1MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Witness Printer took 56.76ms. Allocated memory is still 285.2MB. Free memory was 220.7MB in the beginning and 217.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 110 PlacesBefore, 26 PlacesAfterwards, 101 TransitionsBefore, 16 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 90 TotalNumberOfCompositions, 405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 405, independent: 405, independent conditional: 0, independent unconditional: 405, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 151, independent: 151, independent conditional: 0, independent unconditional: 151, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 405, independent: 254, independent conditional: 0, independent unconditional: 254, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 151, unknown conditional: 0, unknown unconditional: 151] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: 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, 129 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: 13.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 264 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 792 IncrementalHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 39 mSDtfsCounter, 792 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=3, InterpolantAutomatonStates: 30, 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, 0.5s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3055 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 01:30:36,961 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