./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:34:04,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:34:04,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:34:04,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:34:04,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:34:04,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:34:04,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:34:04,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:34:04,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:34:04,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:34:04,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:34:04,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:34:04,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:34:04,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:34:04,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:34:04,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:34:04,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:34:04,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:34:04,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:34:04,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:34:04,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:34:04,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:34:04,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:34:04,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:34:04,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:34:04,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:34:04,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:34:04,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:34:04,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:34:04,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:34:04,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:34:04,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:34:04,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:34:04,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:34:04,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:34:04,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:34:04,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:34:04,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:34:04,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:34:04,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:34:04,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:34:04,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:34:04,153 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:34:04,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:34:04,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:34:04,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:34:04,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:34:04,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:34:04,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:34:04,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:34:04,156 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:34:04,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:34:04,157 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:34:04,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:34:04,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:34:04,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:34:04,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:34:04,157 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:34:04,157 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:34:04,158 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:34:04,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:34:04,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:34:04,158 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:34:04,158 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:34:04,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:34:04,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:34:04,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:34:04,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:34:04,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:34:04,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:34:04,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:34:04,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:34:04,159 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:34:04,160 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:34:04,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:34:04,160 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:34:04,160 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:34:04,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:34:04,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:34:04,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:34:04,388 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:34:04,388 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:34:04,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-08-31 23:34:05,277 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:34:05,492 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:34:05,492 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-08-31 23:34:05,499 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e0a35b64/2499108bb8fb4010bd9012af60570cab/FLAGfd42c1577 [2023-08-31 23:34:05,512 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e0a35b64/2499108bb8fb4010bd9012af60570cab [2023-08-31 23:34:05,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:34:05,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:34:05,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:34:05,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:34:05,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:34:05,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78cae5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05, skipping insertion in model container [2023-08-31 23:34:05,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:34:05,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:34:05,683 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i[945,958] [2023-08-31 23:34:05,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:34:05,828 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:34:05,838 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i[945,958] [2023-08-31 23:34:05,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:34:05,903 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:34:05,904 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:34:05,908 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:34:05,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05 WrapperNode [2023-08-31 23:34:05,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:34:05,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:34:05,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:34:05,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:34:05,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,955 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-31 23:34:05,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:34:05,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:34:05,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:34:05,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:34:05,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:05,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:34:05,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:34:05,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:34:05,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:34:05,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (1/1) ... [2023-08-31 23:34:06,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:34:06,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:34:06,022 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 23:34:06,039 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 23:34:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:34:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:34:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:34:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:34:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:34:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:34:06,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:34:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:34:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:34:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:34:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:34:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:34:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:34:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:34:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:34:06,051 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 23:34:06,164 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:34:06,165 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:34:06,311 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:34:06,317 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:34:06,317 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:34:06,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:34:06 BoogieIcfgContainer [2023-08-31 23:34:06,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:34:06,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:34:06,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:34:06,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:34:06,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:34:05" (1/3) ... [2023-08-31 23:34:06,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b57d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:34:06, skipping insertion in model container [2023-08-31 23:34:06,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:34:05" (2/3) ... [2023-08-31 23:34:06,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b57d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:34:06, skipping insertion in model container [2023-08-31 23:34:06,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:34:06" (3/3) ... [2023-08-31 23:34:06,325 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2023-08-31 23:34:06,335 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:34:06,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:34:06,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:34:06,415 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:34:06,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:34:06,491 INFO L130 PetriNetUnfolder]: 2/91 cut-off events. [2023-08-31 23:34:06,492 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:34:06,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-31 23:34:06,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:34:06,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 87 transitions, 183 flow [2023-08-31 23:34:06,506 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:34:06,517 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:34:06,519 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:34:06,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 183 flow [2023-08-31 23:34:06,533 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-08-31 23:34:06,534 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:34:06,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-31 23:34:06,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-31 23:34:08,787 INFO L134 LiptonReduction]: Checked pairs total: 3025 [2023-08-31 23:34:08,787 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-31 23:34:08,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:34:08,800 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@17d5e33a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:34:08,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:34:08,801 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:34:08,801 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:34:08,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:08,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:34:08,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:08,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash 333, now seen corresponding path program 1 times [2023-08-31 23:34:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:08,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348711346] [2023-08-31 23:34:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:08,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:08,875 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 23:34:08,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:08,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348711346] [2023-08-31 23:34:08,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348711346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:08,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:08,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:34:08,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845750063] [2023-08-31 23:34:08,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:08,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:34:08,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:34:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:34:08,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 180 [2023-08-31 23:34:08,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 57 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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 23:34:08,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:08,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 180 [2023-08-31 23:34:08,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:08,995 INFO L130 PetriNetUnfolder]: 218/365 cut-off events. [2023-08-31 23:34:08,995 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:34:08,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 365 events. 218/365 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1528 event pairs, 218 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 736. Up to 352 conditions per place. [2023-08-31 23:34:08,998 INFO L137 encePairwiseOnDemand]: 174/180 looper letters, 15 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-31 23:34:08,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 75 flow [2023-08-31 23:34:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:34:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:34:09,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2023-08-31 23:34:09,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472222222222223 [2023-08-31 23:34:09,007 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2023-08-31 23:34:09,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2023-08-31 23:34:09,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:09,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2023-08-31 23:34:09,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 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 23:34:09,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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 23:34:09,014 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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 23:34:09,015 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 57 flow. Second operand 2 states and 197 transitions. [2023-08-31 23:34:09,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 75 flow [2023-08-31 23:34:09,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:34:09,018 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2023-08-31 23:34:09,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-31 23:34:09,022 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-08-31 23:34:09,022 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2023-08-31 23:34:09,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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 23:34:09,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:09,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:09,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:34:09,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:09,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1426670068, now seen corresponding path program 1 times [2023-08-31 23:34:09,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:09,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077633889] [2023-08-31 23:34:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:09,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:09,409 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 23:34:09,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:09,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077633889] [2023-08-31 23:34:09,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077633889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:09,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:09,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:34:09,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740851027] [2023-08-31 23:34:09,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:09,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:34:09,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:09,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:34:09,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:34:09,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 180 [2023-08-31 23:34:09,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 23:34:09,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:09,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 180 [2023-08-31 23:34:09,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:09,532 INFO L130 PetriNetUnfolder]: 584/984 cut-off events. [2023-08-31 23:34:09,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:34:09,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 984 events. 584/984 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5090 event pairs, 222 based on Foata normal form. 0/945 useless extension candidates. Maximal degree in co-relation 1965. Up to 481 conditions per place. [2023-08-31 23:34:09,538 INFO L137 encePairwiseOnDemand]: 172/180 looper letters, 24 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2023-08-31 23:34:09,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 136 flow [2023-08-31 23:34:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:34:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:34:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-31 23:34:09,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2023-08-31 23:34:09,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-31 23:34:09,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-31 23:34:09,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:09,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-31 23:34:09,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 23:34:09,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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 23:34:09,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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 23:34:09,548 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 3 states and 272 transitions. [2023-08-31 23:34:09,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 136 flow [2023-08-31 23:34:09,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:34:09,549 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 96 flow [2023-08-31 23:34:09,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-31 23:34:09,550 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-31 23:34:09,550 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 96 flow [2023-08-31 23:34:09,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 23:34:09,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:09,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:09,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:34:09,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:09,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1426670060, now seen corresponding path program 1 times [2023-08-31 23:34:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:09,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267944312] [2023-08-31 23:34:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:09,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:09,806 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 23:34:09,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267944312] [2023-08-31 23:34:09,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267944312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:09,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:09,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:34:09,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235232587] [2023-08-31 23:34:09,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:09,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:34:09,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:09,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:34:09,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:34:09,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 180 [2023-08-31 23:34:09,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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 23:34:09,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:09,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 180 [2023-08-31 23:34:09,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:09,947 INFO L130 PetriNetUnfolder]: 326/592 cut-off events. [2023-08-31 23:34:09,947 INFO L131 PetriNetUnfolder]: For 352/355 co-relation queries the response was YES. [2023-08-31 23:34:09,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 592 events. 326/592 cut-off events. For 352/355 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2983 event pairs, 101 based on Foata normal form. 77/660 useless extension candidates. Maximal degree in co-relation 1561. Up to 480 conditions per place. [2023-08-31 23:34:09,950 INFO L137 encePairwiseOnDemand]: 176/180 looper letters, 22 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2023-08-31 23:34:09,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 168 flow [2023-08-31 23:34:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:34:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:34:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-08-31 23:34:09,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288888888888889 [2023-08-31 23:34:09,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-08-31 23:34:09,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-08-31 23:34:09,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:09,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-08-31 23:34:09,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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 23:34:09,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 23:34:09,954 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 23:34:09,955 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 96 flow. Second operand 5 states and 386 transitions. [2023-08-31 23:34:09,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 168 flow [2023-08-31 23:34:09,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:34:09,957 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 80 flow [2023-08-31 23:34:09,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-31 23:34:09,958 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-31 23:34:09,960 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 80 flow [2023-08-31 23:34:09,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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 23:34:09,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:09,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:09,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:34:09,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:09,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:09,962 INFO L85 PathProgramCache]: Analyzing trace with hash 664189681, now seen corresponding path program 1 times [2023-08-31 23:34:09,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:09,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337519333] [2023-08-31 23:34:09,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:09,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:10,063 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 23:34:10,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:10,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337519333] [2023-08-31 23:34:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337519333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:10,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:10,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:34:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005533711] [2023-08-31 23:34:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:34:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:34:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:34:10,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 180 [2023-08-31 23:34:10,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:34:10,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:10,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 180 [2023-08-31 23:34:10,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:10,139 INFO L130 PetriNetUnfolder]: 380/655 cut-off events. [2023-08-31 23:34:10,139 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2023-08-31 23:34:10,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 655 events. 380/655 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3094 event pairs, 85 based on Foata normal form. 9/657 useless extension candidates. Maximal degree in co-relation 1644. Up to 264 conditions per place. [2023-08-31 23:34:10,142 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 26 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2023-08-31 23:34:10,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 180 flow [2023-08-31 23:34:10,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:34:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:34:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2023-08-31 23:34:10,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2023-08-31 23:34:10,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2023-08-31 23:34:10,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2023-08-31 23:34:10,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:10,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2023-08-31 23:34:10,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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 23:34:10,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 23:34:10,148 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 23:34:10,148 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 80 flow. Second operand 4 states and 351 transitions. [2023-08-31 23:34:10,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 180 flow [2023-08-31 23:34:10,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 175 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:34:10,151 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 123 flow [2023-08-31 23:34:10,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-31 23:34:10,152 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-31 23:34:10,152 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 123 flow [2023-08-31 23:34:10,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:34:10,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:10,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:10,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:34:10,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:10,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1277100217, now seen corresponding path program 1 times [2023-08-31 23:34:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460488550] [2023-08-31 23:34:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:10,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:10,272 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 23:34:10,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:10,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460488550] [2023-08-31 23:34:10,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460488550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:10,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:10,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:34:10,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399113035] [2023-08-31 23:34:10,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:10,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:34:10,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:34:10,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:34:10,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 180 [2023-08-31 23:34:10,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:34:10,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:10,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 180 [2023-08-31 23:34:10,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:10,358 INFO L130 PetriNetUnfolder]: 360/637 cut-off events. [2023-08-31 23:34:10,358 INFO L131 PetriNetUnfolder]: For 522/522 co-relation queries the response was YES. [2023-08-31 23:34:10,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 637 events. 360/637 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3083 event pairs, 55 based on Foata normal form. 4/641 useless extension candidates. Maximal degree in co-relation 1885. Up to 302 conditions per place. [2023-08-31 23:34:10,360 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 33 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2023-08-31 23:34:10,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 321 flow [2023-08-31 23:34:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:34:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:34:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2023-08-31 23:34:10,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4986111111111111 [2023-08-31 23:34:10,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2023-08-31 23:34:10,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2023-08-31 23:34:10,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:10,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2023-08-31 23:34:10,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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 23:34:10,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 23:34:10,369 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 23:34:10,369 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 123 flow. Second operand 4 states and 359 transitions. [2023-08-31 23:34:10,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 321 flow [2023-08-31 23:34:10,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:34:10,373 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 247 flow [2023-08-31 23:34:10,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-31 23:34:10,374 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-31 23:34:10,374 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 247 flow [2023-08-31 23:34:10,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:34:10,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:10,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:10,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:34:10,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:10,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:10,375 INFO L85 PathProgramCache]: Analyzing trace with hash -935414625, now seen corresponding path program 1 times [2023-08-31 23:34:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:10,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728795965] [2023-08-31 23:34:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:10,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:10,504 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 23:34:10,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:10,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728795965] [2023-08-31 23:34:10,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728795965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:10,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:10,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:34:10,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980535915] [2023-08-31 23:34:10,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:10,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:34:10,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:34:10,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:34:10,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 180 [2023-08-31 23:34:10,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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 23:34:10,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:10,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 180 [2023-08-31 23:34:10,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:10,587 INFO L130 PetriNetUnfolder]: 351/617 cut-off events. [2023-08-31 23:34:10,587 INFO L131 PetriNetUnfolder]: For 1027/1027 co-relation queries the response was YES. [2023-08-31 23:34:10,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2165 conditions, 617 events. 351/617 cut-off events. For 1027/1027 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2903 event pairs, 52 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 2155. Up to 293 conditions per place. [2023-08-31 23:34:10,590 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 35 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2023-08-31 23:34:10,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 430 flow [2023-08-31 23:34:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:34:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:34:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2023-08-31 23:34:10,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-31 23:34:10,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2023-08-31 23:34:10,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2023-08-31 23:34:10,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:10,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2023-08-31 23:34:10,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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 23:34:10,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 23:34:10,594 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 23:34:10,595 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 247 flow. Second operand 4 states and 360 transitions. [2023-08-31 23:34:10,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 430 flow [2023-08-31 23:34:10,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:34:10,598 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 316 flow [2023-08-31 23:34:10,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-31 23:34:10,600 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-31 23:34:10,600 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 316 flow [2023-08-31 23:34:10,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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 23:34:10,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:10,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:10,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:34:10,602 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:10,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1067310638, now seen corresponding path program 1 times [2023-08-31 23:34:10,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:10,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551879943] [2023-08-31 23:34:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:10,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:10,697 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 23:34:10,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:10,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551879943] [2023-08-31 23:34:10,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551879943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:10,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:10,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:34:10,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754499385] [2023-08-31 23:34:10,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:10,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:34:10,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:34:10,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:34:10,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 180 [2023-08-31 23:34:10,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 23:34:10,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:10,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 180 [2023-08-31 23:34:10,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:10,783 INFO L130 PetriNetUnfolder]: 374/665 cut-off events. [2023-08-31 23:34:10,783 INFO L131 PetriNetUnfolder]: For 1537/1537 co-relation queries the response was YES. [2023-08-31 23:34:10,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 665 events. 374/665 cut-off events. For 1537/1537 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3322 event pairs, 69 based on Foata normal form. 6/671 useless extension candidates. Maximal degree in co-relation 2461. Up to 295 conditions per place. [2023-08-31 23:34:10,786 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 33 selfloop transitions, 19 changer transitions 1/54 dead transitions. [2023-08-31 23:34:10,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 478 flow [2023-08-31 23:34:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:34:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:34:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2023-08-31 23:34:10,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-31 23:34:10,787 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2023-08-31 23:34:10,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2023-08-31 23:34:10,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:10,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2023-08-31 23:34:10,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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 23:34:10,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 23:34:10,789 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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 23:34:10,789 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 316 flow. Second operand 4 states and 360 transitions. [2023-08-31 23:34:10,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 478 flow [2023-08-31 23:34:10,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 463 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:34:10,792 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 371 flow [2023-08-31 23:34:10,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=371, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-08-31 23:34:10,792 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-08-31 23:34:10,792 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 371 flow [2023-08-31 23:34:10,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 23:34:10,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:10,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:10,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:34:10,793 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:10,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1067351000, now seen corresponding path program 1 times [2023-08-31 23:34:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:10,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539717823] [2023-08-31 23:34:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:10,872 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 23:34:10,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:10,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539717823] [2023-08-31 23:34:10,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539717823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:10,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:34:10,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673570029] [2023-08-31 23:34:10,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:10,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:34:10,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:34:10,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:34:10,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 180 [2023-08-31 23:34:10,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:34:10,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:10,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 180 [2023-08-31 23:34:10,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:10,984 INFO L130 PetriNetUnfolder]: 547/903 cut-off events. [2023-08-31 23:34:10,985 INFO L131 PetriNetUnfolder]: For 3881/3881 co-relation queries the response was YES. [2023-08-31 23:34:10,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3588 conditions, 903 events. 547/903 cut-off events. For 3881/3881 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4018 event pairs, 73 based on Foata normal form. 9/912 useless extension candidates. Maximal degree in co-relation 3574. Up to 284 conditions per place. [2023-08-31 23:34:10,989 INFO L137 encePairwiseOnDemand]: 172/180 looper letters, 46 selfloop transitions, 25 changer transitions 4/75 dead transitions. [2023-08-31 23:34:10,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 75 transitions, 827 flow [2023-08-31 23:34:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:34:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:34:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2023-08-31 23:34:10,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48777777777777775 [2023-08-31 23:34:10,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2023-08-31 23:34:10,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2023-08-31 23:34:10,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:10,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2023-08-31 23:34:10,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 23:34:10,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 23:34:10,993 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 23:34:10,993 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 371 flow. Second operand 5 states and 439 transitions. [2023-08-31 23:34:10,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 75 transitions, 827 flow [2023-08-31 23:34:10,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 819 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-31 23:34:10,999 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 630 flow [2023-08-31 23:34:10,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=630, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-08-31 23:34:11,000 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-08-31 23:34:11,000 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 630 flow [2023-08-31 23:34:11,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:34:11,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:11,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:11,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:34:11,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:11,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1038706070, now seen corresponding path program 2 times [2023-08-31 23:34:11,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:11,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108099382] [2023-08-31 23:34:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:11,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:11,078 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 23:34:11,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108099382] [2023-08-31 23:34:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108099382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:11,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:11,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:34:11,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50153489] [2023-08-31 23:34:11,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:11,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:34:11,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:11,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:34:11,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:34:11,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 180 [2023-08-31 23:34:11,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 630 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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 23:34:11,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:11,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 180 [2023-08-31 23:34:11,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:11,196 INFO L130 PetriNetUnfolder]: 571/972 cut-off events. [2023-08-31 23:34:11,197 INFO L131 PetriNetUnfolder]: For 6562/6562 co-relation queries the response was YES. [2023-08-31 23:34:11,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 972 events. 571/972 cut-off events. For 6562/6562 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4603 event pairs, 140 based on Foata normal form. 33/1005 useless extension candidates. Maximal degree in co-relation 4263. Up to 400 conditions per place. [2023-08-31 23:34:11,201 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 31 selfloop transitions, 7 changer transitions 36/74 dead transitions. [2023-08-31 23:34:11,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 960 flow [2023-08-31 23:34:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:34:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:34:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2023-08-31 23:34:11,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2023-08-31 23:34:11,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2023-08-31 23:34:11,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2023-08-31 23:34:11,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:11,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2023-08-31 23:34:11,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 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 23:34:11,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 23:34:11,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 23:34:11,205 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 630 flow. Second operand 5 states and 432 transitions. [2023-08-31 23:34:11,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 960 flow [2023-08-31 23:34:11,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 960 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:34:11,215 INFO L231 Difference]: Finished difference. Result has 61 places, 25 transitions, 284 flow [2023-08-31 23:34:11,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=61, PETRI_TRANSITIONS=25} [2023-08-31 23:34:11,215 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2023-08-31 23:34:11,215 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 25 transitions, 284 flow [2023-08-31 23:34:11,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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 23:34:11,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:11,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:11,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:34:11,216 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:11,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 499664760, now seen corresponding path program 1 times [2023-08-31 23:34:11,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:11,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293914543] [2023-08-31 23:34:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:11,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:11,333 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 23:34:11,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:11,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293914543] [2023-08-31 23:34:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293914543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:11,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:34:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232952252] [2023-08-31 23:34:11,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:11,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:34:11,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:34:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:34:11,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 180 [2023-08-31 23:34:11,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 25 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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 23:34:11,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:11,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 180 [2023-08-31 23:34:11,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:11,399 INFO L130 PetriNetUnfolder]: 151/319 cut-off events. [2023-08-31 23:34:11,400 INFO L131 PetriNetUnfolder]: For 2509/2511 co-relation queries the response was YES. [2023-08-31 23:34:11,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 319 events. 151/319 cut-off events. For 2509/2511 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1467 event pairs, 37 based on Foata normal form. 12/325 useless extension candidates. Maximal degree in co-relation 1403. Up to 183 conditions per place. [2023-08-31 23:34:11,401 INFO L137 encePairwiseOnDemand]: 174/180 looper letters, 25 selfloop transitions, 4 changer transitions 18/54 dead transitions. [2023-08-31 23:34:11,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 54 transitions, 646 flow [2023-08-31 23:34:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:34:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:34:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-08-31 23:34:11,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2023-08-31 23:34:11,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-08-31 23:34:11,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-08-31 23:34:11,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:11,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-08-31 23:34:11,404 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 23:34:11,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 23:34:11,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 23:34:11,405 INFO L175 Difference]: Start difference. First operand has 61 places, 25 transitions, 284 flow. Second operand 5 states and 454 transitions. [2023-08-31 23:34:11,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 54 transitions, 646 flow [2023-08-31 23:34:11,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 394 flow, removed 28 selfloop flow, removed 20 redundant places. [2023-08-31 23:34:11,409 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 188 flow [2023-08-31 23:34:11,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2023-08-31 23:34:11,410 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-31 23:34:11,410 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 188 flow [2023-08-31 23:34:11,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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 23:34:11,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:11,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:11,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:34:11,410 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:11,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:11,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2114867589, now seen corresponding path program 1 times [2023-08-31 23:34:11,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:11,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538192984] [2023-08-31 23:34:11,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:11,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:11,508 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 23:34:11,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538192984] [2023-08-31 23:34:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538192984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:11,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:11,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:34:11,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635951720] [2023-08-31 23:34:11,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:11,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:34:11,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:34:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:34:11,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 180 [2023-08-31 23:34:11,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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 23:34:11,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:11,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 180 [2023-08-31 23:34:11,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:11,569 INFO L130 PetriNetUnfolder]: 101/226 cut-off events. [2023-08-31 23:34:11,569 INFO L131 PetriNetUnfolder]: For 502/535 co-relation queries the response was YES. [2023-08-31 23:34:11,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 226 events. 101/226 cut-off events. For 502/535 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 941 event pairs, 12 based on Foata normal form. 23/245 useless extension candidates. Maximal degree in co-relation 912. Up to 128 conditions per place. [2023-08-31 23:34:11,570 INFO L137 encePairwiseOnDemand]: 174/180 looper letters, 25 selfloop transitions, 7 changer transitions 19/56 dead transitions. [2023-08-31 23:34:11,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 454 flow [2023-08-31 23:34:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:34:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:34:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2023-08-31 23:34:11,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2023-08-31 23:34:11,571 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2023-08-31 23:34:11,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2023-08-31 23:34:11,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:11,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2023-08-31 23:34:11,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 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 23:34:11,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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 23:34:11,575 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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 23:34:11,575 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 188 flow. Second operand 6 states and 543 transitions. [2023-08-31 23:34:11,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 454 flow [2023-08-31 23:34:11,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 448 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 23:34:11,577 INFO L231 Difference]: Finished difference. Result has 52 places, 26 transitions, 205 flow [2023-08-31 23:34:11,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=52, PETRI_TRANSITIONS=26} [2023-08-31 23:34:11,577 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-08-31 23:34:11,577 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 26 transitions, 205 flow [2023-08-31 23:34:11,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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 23:34:11,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:34:11,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:11,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:34:11,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:34:11,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:34:11,578 INFO L85 PathProgramCache]: Analyzing trace with hash 100205560, now seen corresponding path program 1 times [2023-08-31 23:34:11,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:34:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880482731] [2023-08-31 23:34:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:34:11,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:34:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:34:11,661 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 23:34:11,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:34:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880482731] [2023-08-31 23:34:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880482731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:34:11,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:34:11,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:34:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888949435] [2023-08-31 23:34:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:34:11,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:34:11,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:34:11,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:34:11,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:34:11,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 180 [2023-08-31 23:34:11,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 26 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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 23:34:11,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:34:11,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 180 [2023-08-31 23:34:11,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:34:11,711 INFO L130 PetriNetUnfolder]: 46/121 cut-off events. [2023-08-31 23:34:11,711 INFO L131 PetriNetUnfolder]: For 429/457 co-relation queries the response was YES. [2023-08-31 23:34:11,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 121 events. 46/121 cut-off events. For 429/457 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 404 event pairs, 8 based on Foata normal form. 16/134 useless extension candidates. Maximal degree in co-relation 557. Up to 61 conditions per place. [2023-08-31 23:34:11,712 INFO L137 encePairwiseOnDemand]: 174/180 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-31 23:34:11,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 41 transitions, 360 flow [2023-08-31 23:34:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:34:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:34:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 616 transitions. [2023-08-31 23:34:11,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2023-08-31 23:34:11,714 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 616 transitions. [2023-08-31 23:34:11,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 616 transitions. [2023-08-31 23:34:11,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:34:11,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 616 transitions. [2023-08-31 23:34:11,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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 23:34:11,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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 23:34:11,717 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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 23:34:11,717 INFO L175 Difference]: Start difference. First operand has 52 places, 26 transitions, 205 flow. Second operand 7 states and 616 transitions. [2023-08-31 23:34:11,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 41 transitions, 360 flow [2023-08-31 23:34:11,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 279 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-08-31 23:34:11,718 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-31 23:34:11,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-31 23:34:11,719 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-08-31 23:34:11,719 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-31 23:34:11,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:34:11,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:34:11,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:34:11,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:34:11,724 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:34:11,726 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:34:11,726 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:34:11,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:34:11 BasicIcfg [2023-08-31 23:34:11,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:34:11,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:34:11,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:34:11,729 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:34:11,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:34:06" (3/4) ... [2023-08-31 23:34:11,731 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:34:11,735 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:34:11,735 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:34:11,735 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:34:11,739 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:34:11,739 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:34:11,739 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:34:11,739 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:34:11,757 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:34:11,757 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:34:11,758 INFO L158 Benchmark]: Toolchain (without parser) took 6243.85ms. Allocated memory was 79.7MB in the beginning and 161.5MB in the end (delta: 81.8MB). Free memory was 56.1MB in the beginning and 82.6MB in the end (delta: -26.4MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2023-08-31 23:34:11,758 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:34:11,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.88ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 55.7MB in the end (delta: 211.9kB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-08-31 23:34:11,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.05ms. Allocated memory is still 79.7MB. Free memory was 55.7MB in the beginning and 53.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:34:11,759 INFO L158 Benchmark]: Boogie Preprocessor took 38.85ms. Allocated memory is still 79.7MB. Free memory was 53.6MB in the beginning and 52.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:34:11,759 INFO L158 Benchmark]: RCFGBuilder took 324.10ms. Allocated memory is still 79.7MB. Free memory was 52.3MB in the beginning and 38.0MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-31 23:34:11,759 INFO L158 Benchmark]: TraceAbstraction took 5408.59ms. Allocated memory was 79.7MB in the beginning and 161.5MB in the end (delta: 81.8MB). Free memory was 37.2MB in the beginning and 85.7MB in the end (delta: -48.5MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2023-08-31 23:34:11,759 INFO L158 Benchmark]: Witness Printer took 28.21ms. Allocated memory is still 161.5MB. Free memory was 85.7MB in the beginning and 82.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:34:11,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.88ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 55.7MB in the end (delta: 211.9kB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.05ms. Allocated memory is still 79.7MB. Free memory was 55.7MB in the beginning and 53.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.85ms. Allocated memory is still 79.7MB. Free memory was 53.6MB in the beginning and 52.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 324.10ms. Allocated memory is still 79.7MB. Free memory was 52.3MB in the beginning and 38.0MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5408.59ms. Allocated memory was 79.7MB in the beginning and 161.5MB in the end (delta: 81.8MB). Free memory was 37.2MB in the beginning and 85.7MB in the end (delta: -48.5MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Witness Printer took 28.21ms. Allocated memory is still 161.5MB. Free memory was 85.7MB in the beginning and 82.6MB 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: 2.3s, 95 PlacesBefore, 34 PlacesAfterwards, 87 TransitionsBefore, 24 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 3025 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1741, independent: 1643, independent conditional: 0, independent unconditional: 1643, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 822, independent: 791, independent conditional: 0, independent unconditional: 791, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1741, independent: 852, independent conditional: 0, independent unconditional: 852, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 822, unknown conditional: 0, unknown unconditional: 822] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 774]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 117 locations, 11 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: 5.3s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 412 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 286 mSDsluCounter, 127 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 743 IncrementalHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 62 mSDtfsCounter, 743 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=630occurred in iteration=8, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:34:11,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE