./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_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/safe004_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 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 --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 23:30:33,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:30:33,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:30:33,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:30:33,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:30:33,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:30:33,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:30:33,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:30:33,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:30:33,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:30:33,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:30:33,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:30:33,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:30:33,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:30:33,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:30:33,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:30:33,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:30:33,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:30:33,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:30:33,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:30:33,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:30:33,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:30:33,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:30:33,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:30:33,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:30:33,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:30:33,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:30:33,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:30:33,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:30:33,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:30:33,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:30:33,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:30:33,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:30:33,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:30:33,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:30:33,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:30:33,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:30:33,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:30:33,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:30:33,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:30:33,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:30:33,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:30:33,904 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:30:33,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:30:33,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:30:33,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:30:33,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:30:33,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:30:33,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:30:33,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:30:33,908 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:30:33,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:30:33,909 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:30:33,909 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:30:33,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:30:33,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:30:33,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:30:33,910 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:30:33,910 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:30:33,910 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:30:33,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:30:33,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:30:33,911 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:30:33,911 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:30:33,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:30:33,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:30:33,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:30:33,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:30:33,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:30:33,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:30:33,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:30:33,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:30:33,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:30:33,913 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:30:33,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:30:33,914 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:30:33,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:30:34,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:30:34,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:30:34,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:30:34,254 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:30:34,254 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:30:34,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2023-08-31 23:30:35,523 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:30:35,731 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:30:35,732 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2023-08-31 23:30:35,744 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43e91f2c/b8e9880f24f24404863f2ae398bc791f/FLAG0fe0a8970 [2023-08-31 23:30:35,757 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43e91f2c/b8e9880f24f24404863f2ae398bc791f [2023-08-31 23:30:35,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:30:35,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:30:35,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:30:35,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:30:35,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:30:35,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:30:35" (1/1) ... [2023-08-31 23:30:35,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f37179b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:35, skipping insertion in model container [2023-08-31 23:30:35,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:30:35" (1/1) ... [2023-08-31 23:30:35,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:30:35,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:30:35,941 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/safe004_tso.i[945,958] [2023-08-31 23:30:36,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:30:36,080 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:30:36,093 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/safe004_tso.i[945,958] [2023-08-31 23:30:36,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:30:36,148 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:30:36,148 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:30:36,154 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:30:36,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36 WrapperNode [2023-08-31 23:30:36,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:30:36,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:30:36,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:30:36,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:30:36,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,205 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-31 23:30:36,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:30:36,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:30:36,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:30:36,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:30:36,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,252 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:30:36,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:30:36,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:30:36,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:30:36,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (1/1) ... [2023-08-31 23:30:36,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:30:36,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:30:36,298 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 23:30:36,306 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 23:30:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:30:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:30:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:30:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:30:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:30:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:30:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:30:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:30:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:30:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:30:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:30:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:30:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:30:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:30:36,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:30:36,344 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 23:30:36,525 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:30:36,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:30:36,681 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:30:36,688 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:30:36,688 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:30:36,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:30:36 BoogieIcfgContainer [2023-08-31 23:30:36,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:30:36,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:30:36,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:30:36,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:30:36,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:30:35" (1/3) ... [2023-08-31 23:30:36,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8934cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:30:36, skipping insertion in model container [2023-08-31 23:30:36,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:30:36" (2/3) ... [2023-08-31 23:30:36,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8934cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:30:36, skipping insertion in model container [2023-08-31 23:30:36,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:30:36" (3/3) ... [2023-08-31 23:30:36,702 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2023-08-31 23:30:36,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:30:36,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:30:36,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:30:36,808 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:30:36,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:30:36,913 INFO L130 PetriNetUnfolder]: 2/91 cut-off events. [2023-08-31 23:30:36,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:30:36,917 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 23:30:36,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:30:36,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 87 transitions, 183 flow [2023-08-31 23:30:36,926 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:30:36,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:30:36,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:30:36,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 183 flow [2023-08-31 23:30:36,977 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-08-31 23:30:36,978 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:30:36,978 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 23:30:36,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-31 23:30:39,666 INFO L134 LiptonReduction]: Checked pairs total: 3595 [2023-08-31 23:30:39,667 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-31 23:30:39,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:30:39,694 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;@1dbae67d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:30:39,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:30:39,697 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:30:39,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:30:39,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:30:39,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:30:39,700 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 23:30:39,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:30:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash 334, now seen corresponding path program 1 times [2023-08-31 23:30:39,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:30:39,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393121452] [2023-08-31 23:30:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:30:39,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:30:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:30:39,831 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 23:30:39,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:30:39,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393121452] [2023-08-31 23:30:39,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393121452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:30:39,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:30:39,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:30:39,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170630738] [2023-08-31 23:30:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:30:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:30:39,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:30:39,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:30:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:30:39,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 188 [2023-08-31 23:30:39,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 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 23:30:39,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:30:39,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 188 [2023-08-31 23:30:39,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:30:40,014 INFO L130 PetriNetUnfolder]: 218/374 cut-off events. [2023-08-31 23:30:40,014 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:30:40,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 374 events. 218/374 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1601 event pairs, 218 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 745. Up to 352 conditions per place. [2023-08-31 23:30:40,021 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 15 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-31 23:30:40,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 75 flow [2023-08-31 23:30:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:30:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:30:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2023-08-31 23:30:40,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2023-08-31 23:30:40,034 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 198 transitions. [2023-08-31 23:30:40,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 198 transitions. [2023-08-31 23:30:40,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:30:40,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 198 transitions. [2023-08-31 23:30:40,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 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 23:30:40,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:30:40,045 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:30:40,046 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 2 states and 198 transitions. [2023-08-31 23:30:40,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 75 flow [2023-08-31 23:30:40,049 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 23:30:40,050 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2023-08-31 23:30:40,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, 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 23:30:40,055 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-08-31 23:30:40,055 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2023-08-31 23:30:40,055 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 23:30:40,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:30:40,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:30:40,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:30:40,056 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 23:30:40,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:30:40,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1192405077, now seen corresponding path program 1 times [2023-08-31 23:30:40,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:30:40,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542727127] [2023-08-31 23:30:40,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:30:40,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:30:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:30:40,495 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 23:30:40,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:30:40,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542727127] [2023-08-31 23:30:40,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542727127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:30:40,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:30:40,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:30:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600716375] [2023-08-31 23:30:40,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:30:40,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:30:40,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:30:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:30:40,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:30:40,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-31 23:30:40,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 23:30:40,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:30:40,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-31 23:30:40,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:30:40,665 INFO L130 PetriNetUnfolder]: 732/1136 cut-off events. [2023-08-31 23:30:40,665 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:30:40,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2325 conditions, 1136 events. 732/1136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4922 event pairs, 397 based on Foata normal form. 0/1108 useless extension candidates. Maximal degree in co-relation 2322. Up to 836 conditions per place. [2023-08-31 23:30:40,672 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 25 selfloop transitions, 8 changer transitions 0/33 dead transitions. [2023-08-31 23:30:40,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 142 flow [2023-08-31 23:30:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:30:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:30:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-31 23:30:40,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2023-08-31 23:30:40,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-31 23:30:40,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-31 23:30:40,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:30:40,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-31 23:30:40,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 23:30:40,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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 23:30:40,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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 23:30:40,678 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 3 states and 268 transitions. [2023-08-31 23:30:40,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 142 flow [2023-08-31 23:30:40,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:30:40,680 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 104 flow [2023-08-31 23:30:40,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, 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=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-31 23:30:40,681 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-31 23:30:40,681 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 104 flow [2023-08-31 23:30:40,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 23:30:40,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:30:40,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:30:40,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:30:40,682 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 23:30:40,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:30:40,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1192405085, now seen corresponding path program 1 times [2023-08-31 23:30:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:30:40,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347129270] [2023-08-31 23:30:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:30:40,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:30:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:30:41,040 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 23:30:41,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:30:41,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347129270] [2023-08-31 23:30:41,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347129270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:30:41,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:30:41,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:30:41,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748255404] [2023-08-31 23:30:41,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:30:41,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:30:41,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:30:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:30:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:30:41,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 188 [2023-08-31 23:30:41,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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 23:30:41,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:30:41,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 188 [2023-08-31 23:30:41,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:30:41,290 INFO L130 PetriNetUnfolder]: 453/744 cut-off events. [2023-08-31 23:30:41,290 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 23:30:41,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 744 events. 453/744 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3151 event pairs, 74 based on Foata normal form. 56/798 useless extension candidates. Maximal degree in co-relation 2019. Up to 385 conditions per place. [2023-08-31 23:30:41,299 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 31 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-31 23:30:41,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 234 flow [2023-08-31 23:30:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:30:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:30:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-08-31 23:30:41,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42446808510638295 [2023-08-31 23:30:41,302 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-08-31 23:30:41,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-08-31 23:30:41,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:30:41,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-08-31 23:30:41,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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 23:30:41,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:30:41,307 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:30:41,307 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 104 flow. Second operand 5 states and 399 transitions. [2023-08-31 23:30:41,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 234 flow [2023-08-31 23:30:41,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:30:41,311 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 107 flow [2023-08-31 23:30:41,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-31 23:30:41,312 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-31 23:30:41,312 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 107 flow [2023-08-31 23:30:41,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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 23:30:41,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:30:41,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:30:41,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:30:41,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:30:41,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:30:41,314 INFO L85 PathProgramCache]: Analyzing trace with hash -736167640, now seen corresponding path program 1 times [2023-08-31 23:30:41,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:30:41,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358170912] [2023-08-31 23:30:41,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:30:41,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:30:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:30:41,618 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 23:30:41,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:30:41,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358170912] [2023-08-31 23:30:41,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358170912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:30:41,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:30:41,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:30:41,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530222847] [2023-08-31 23:30:41,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:30:41,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:30:41,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:30:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:30:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:30:41,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 188 [2023-08-31 23:30:41,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 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 23:30:41,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:30:41,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 188 [2023-08-31 23:30:41,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:30:41,950 INFO L130 PetriNetUnfolder]: 539/890 cut-off events. [2023-08-31 23:30:41,950 INFO L131 PetriNetUnfolder]: For 341/341 co-relation queries the response was YES. [2023-08-31 23:30:41,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 890 events. 539/890 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3908 event pairs, 262 based on Foata normal form. 42/922 useless extension candidates. Maximal degree in co-relation 2355. Up to 606 conditions per place. [2023-08-31 23:30:41,956 INFO L137 encePairwiseOnDemand]: 180/188 looper letters, 28 selfloop transitions, 11 changer transitions 18/59 dead transitions. [2023-08-31 23:30:41,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 59 transitions, 350 flow [2023-08-31 23:30:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:30:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:30:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 523 transitions. [2023-08-31 23:30:41,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974164133738602 [2023-08-31 23:30:41,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 523 transitions. [2023-08-31 23:30:41,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 523 transitions. [2023-08-31 23:30:41,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:30:41,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 523 transitions. [2023-08-31 23:30:41,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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 23:30:41,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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 23:30:41,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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 23:30:41,965 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 107 flow. Second operand 7 states and 523 transitions. [2023-08-31 23:30:41,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 59 transitions, 350 flow [2023-08-31 23:30:41,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 59 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:30:41,969 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 193 flow [2023-08-31 23:30:41,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-08-31 23:30:41,970 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-31 23:30:41,970 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 193 flow [2023-08-31 23:30:41,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 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 23:30:41,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:30:41,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:30:41,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:30:41,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:30:41,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:30:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1761603018, now seen corresponding path program 1 times [2023-08-31 23:30:41,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:30:41,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329598326] [2023-08-31 23:30:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:30:41,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:30:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:30:42,154 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 23:30:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:30:42,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329598326] [2023-08-31 23:30:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329598326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:30:42,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:30:42,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:30:42,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746992301] [2023-08-31 23:30:42,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:30:42,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:30:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:30:42,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:30:42,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:30:42,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 188 [2023-08-31 23:30:42,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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 23:30:42,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:30:42,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 188 [2023-08-31 23:30:42,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:30:42,306 INFO L130 PetriNetUnfolder]: 284/506 cut-off events. [2023-08-31 23:30:42,307 INFO L131 PetriNetUnfolder]: For 522/524 co-relation queries the response was YES. [2023-08-31 23:30:42,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 506 events. 284/506 cut-off events. For 522/524 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2158 event pairs, 90 based on Foata normal form. 29/531 useless extension candidates. Maximal degree in co-relation 1426. Up to 348 conditions per place. [2023-08-31 23:30:42,309 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 19 selfloop transitions, 5 changer transitions 5/38 dead transitions. [2023-08-31 23:30:42,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 251 flow [2023-08-31 23:30:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:30:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:30:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-08-31 23:30:42,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106382978723404 [2023-08-31 23:30:42,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-08-31 23:30:42,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-08-31 23:30:42,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:30:42,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-08-31 23:30:42,313 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 23:30:42,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:30:42,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:30:42,315 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 193 flow. Second operand 5 states and 386 transitions. [2023-08-31 23:30:42,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 251 flow [2023-08-31 23:30:42,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 245 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-31 23:30:42,318 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 159 flow [2023-08-31 23:30:42,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-08-31 23:30:42,319 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-31 23:30:42,319 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 159 flow [2023-08-31 23:30:42,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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 23:30:42,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:30:42,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:30:42,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:30:42,320 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 23:30:42,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:30:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1761603010, now seen corresponding path program 1 times [2023-08-31 23:30:42,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:30:42,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557510938] [2023-08-31 23:30:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:30:42,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:30:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:30:42,483 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 23:30:42,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:30:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557510938] [2023-08-31 23:30:42,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557510938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:30:42,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:30:42,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:30:42,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562245633] [2023-08-31 23:30:42,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:30:42,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:30:42,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:30:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:30:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:30:42,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-31 23:30:42,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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 23:30:42,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:30:42,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-31 23:30:42,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:30:42,637 INFO L130 PetriNetUnfolder]: 418/711 cut-off events. [2023-08-31 23:30:42,637 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-08-31 23:30:42,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 711 events. 418/711 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3077 event pairs, 78 based on Foata normal form. 6/717 useless extension candidates. Maximal degree in co-relation 2008. Up to 219 conditions per place. [2023-08-31 23:30:42,641 INFO L137 encePairwiseOnDemand]: 180/188 looper letters, 22 selfloop transitions, 7 changer transitions 37/66 dead transitions. [2023-08-31 23:30:42,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 425 flow [2023-08-31 23:30:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:30:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:30:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2023-08-31 23:30:42,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46048632218844987 [2023-08-31 23:30:42,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2023-08-31 23:30:42,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2023-08-31 23:30:42,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:30:42,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2023-08-31 23:30:42,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 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 23:30:42,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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 23:30:42,650 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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 23:30:42,650 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 159 flow. Second operand 7 states and 606 transitions. [2023-08-31 23:30:42,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 425 flow [2023-08-31 23:30:42,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 412 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:30:42,653 INFO L231 Difference]: Finished difference. Result has 44 places, 21 transitions, 122 flow [2023-08-31 23:30:42,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=21} [2023-08-31 23:30:42,656 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-31 23:30:42,656 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 21 transitions, 122 flow [2023-08-31 23:30:42,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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 23:30:42,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:30:42,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:30:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:30:42,659 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 23:30:42,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:30:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash -482854212, now seen corresponding path program 1 times [2023-08-31 23:30:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:30:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416533553] [2023-08-31 23:30:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:30:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:30:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:30:42,843 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 23:30:42,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:30:42,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416533553] [2023-08-31 23:30:42,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416533553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:30:42,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:30:42,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:30:42,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085507214] [2023-08-31 23:30:42,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:30:42,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:30:42,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:30:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:30:42,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:30:42,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-31 23:30:42,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 21 transitions, 122 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 23:30:42,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:30:42,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-31 23:30:42,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:30:42,911 INFO L130 PetriNetUnfolder]: 91/197 cut-off events. [2023-08-31 23:30:42,912 INFO L131 PetriNetUnfolder]: For 236/239 co-relation queries the response was YES. [2023-08-31 23:30:42,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 197 events. 91/197 cut-off events. For 236/239 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 793 event pairs, 17 based on Foata normal form. 5/197 useless extension candidates. Maximal degree in co-relation 574. Up to 108 conditions per place. [2023-08-31 23:30:42,913 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 22 selfloop transitions, 4 changer transitions 10/41 dead transitions. [2023-08-31 23:30:42,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 272 flow [2023-08-31 23:30:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:30:42,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:30:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-31 23:30:42,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2023-08-31 23:30:42,916 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-31 23:30:42,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-31 23:30:42,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:30:42,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-31 23:30:42,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 23:30:42,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:30:42,919 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:30:42,920 INFO L175 Difference]: Start difference. First operand has 44 places, 21 transitions, 122 flow. Second operand 5 states and 450 transitions. [2023-08-31 23:30:42,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 272 flow [2023-08-31 23:30:42,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 261 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-31 23:30:42,922 INFO L231 Difference]: Finished difference. Result has 45 places, 24 transitions, 151 flow [2023-08-31 23:30:42,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2023-08-31 23:30:42,923 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-08-31 23:30:42,923 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 151 flow [2023-08-31 23:30:42,924 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 23:30:42,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:30:42,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:30:42,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:30:42,924 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 23:30:42,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:30:42,925 INFO L85 PathProgramCache]: Analyzing trace with hash 846404675, now seen corresponding path program 1 times [2023-08-31 23:30:42,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:30:42,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445602108] [2023-08-31 23:30:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:30:42,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:30:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:30:43,093 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 23:30:43,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:30:43,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445602108] [2023-08-31 23:30:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445602108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:30:43,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:30:43,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:30:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957859455] [2023-08-31 23:30:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:30:43,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:30:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:30:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:30:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:30:43,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-31 23:30:43,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 151 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 23:30:43,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:30:43,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-31 23:30:43,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:30:43,173 INFO L130 PetriNetUnfolder]: 54/135 cut-off events. [2023-08-31 23:30:43,173 INFO L131 PetriNetUnfolder]: For 262/278 co-relation queries the response was YES. [2023-08-31 23:30:43,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 135 events. 54/135 cut-off events. For 262/278 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 510 event pairs, 6 based on Foata normal form. 12/144 useless extension candidates. Maximal degree in co-relation 515. Up to 66 conditions per place. [2023-08-31 23:30:43,174 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 21 selfloop transitions, 6 changer transitions 18/50 dead transitions. [2023-08-31 23:30:43,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 386 flow [2023-08-31 23:30:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:30:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:30:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 625 transitions. [2023-08-31 23:30:43,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749240121580547 [2023-08-31 23:30:43,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 625 transitions. [2023-08-31 23:30:43,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 625 transitions. [2023-08-31 23:30:43,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:30:43,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 625 transitions. [2023-08-31 23:30:43,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 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 23:30:43,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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 23:30:43,181 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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 23:30:43,181 INFO L175 Difference]: Start difference. First operand has 45 places, 24 transitions, 151 flow. Second operand 7 states and 625 transitions. [2023-08-31 23:30:43,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 386 flow [2023-08-31 23:30:43,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 381 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 23:30:43,183 INFO L231 Difference]: Finished difference. Result has 51 places, 24 transitions, 172 flow [2023-08-31 23:30:43,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=172, PETRI_PLACES=51, PETRI_TRANSITIONS=24} [2023-08-31 23:30:43,186 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-08-31 23:30:43,186 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 24 transitions, 172 flow [2023-08-31 23:30:43,187 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 23:30:43,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:30:43,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:30:43,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:30:43,187 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 23:30:43,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:30:43,195 INFO L85 PathProgramCache]: Analyzing trace with hash 468725331, now seen corresponding path program 1 times [2023-08-31 23:30:43,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:30:43,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297187598] [2023-08-31 23:30:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:30:43,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:30:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:30:43,377 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 23:30:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:30:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297187598] [2023-08-31 23:30:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297187598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:30:43,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:30:43,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:30:43,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57410334] [2023-08-31 23:30:43,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:30:43,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:30:43,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:30:43,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:30:43,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:30:43,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-31 23:30:43,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 24 transitions, 172 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 23:30:43,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:30:43,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-31 23:30:43,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:30:43,443 INFO L130 PetriNetUnfolder]: 33/87 cut-off events. [2023-08-31 23:30:43,444 INFO L131 PetriNetUnfolder]: For 303/320 co-relation queries the response was YES. [2023-08-31 23:30:43,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 87 events. 33/87 cut-off events. For 303/320 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 277 event pairs, 5 based on Foata normal form. 13/98 useless extension candidates. Maximal degree in co-relation 365. Up to 32 conditions per place. [2023-08-31 23:30:43,444 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-31 23:30:43,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 35 transitions, 294 flow [2023-08-31 23:30:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:30:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:30:43,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 692 transitions. [2023-08-31 23:30:43,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2023-08-31 23:30:43,447 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 692 transitions. [2023-08-31 23:30:43,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 692 transitions. [2023-08-31 23:30:43,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:30:43,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 692 transitions. [2023-08-31 23:30:43,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 86.5) internal successors, (692), 8 states have internal predecessors, (692), 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 23:30:43,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 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 23:30:43,452 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 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 23:30:43,452 INFO L175 Difference]: Start difference. First operand has 51 places, 24 transitions, 172 flow. Second operand 8 states and 692 transitions. [2023-08-31 23:30:43,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 35 transitions, 294 flow [2023-08-31 23:30:43,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 35 transitions, 258 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-31 23:30:43,453 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-08-31 23:30:43,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-08-31 23:30:43,454 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-08-31 23:30:43,454 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-08-31 23:30:43,455 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 23:30:43,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:30:43,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:30:43,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:30:43,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:30:43,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:30:43,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:30:43,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:30:43,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:30:43,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:30:43,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:30:43,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:30:43,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:30:43,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:30:43,462 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:30:43,462 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:30:43,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:30:43 BasicIcfg [2023-08-31 23:30:43,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:30:43,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:30:43,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:30:43,466 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:30:43,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:30:36" (3/4) ... [2023-08-31 23:30:43,469 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:30:43,474 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:30:43,474 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:30:43,475 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:30:43,478 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:30:43,478 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:30:43,478 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:30:43,479 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:30:43,506 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:30:43,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:30:43,507 INFO L158 Benchmark]: Toolchain (without parser) took 7746.32ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 38.1MB in the beginning and 106.2MB in the end (delta: -68.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2023-08-31 23:30:43,507 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:30:43,508 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.97ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.9MB in the beginning and 53.2MB in the end (delta: -15.3MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-08-31 23:30:43,508 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.08ms. Allocated memory is still 81.8MB. Free memory was 53.2MB in the beginning and 51.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:30:43,508 INFO L158 Benchmark]: Boogie Preprocessor took 51.33ms. Allocated memory is still 81.8MB. Free memory was 51.1MB in the beginning and 49.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:30:43,508 INFO L158 Benchmark]: RCFGBuilder took 434.34ms. Allocated memory is still 81.8MB. Free memory was 49.7MB in the beginning and 58.9MB in the end (delta: -9.2MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-08-31 23:30:43,509 INFO L158 Benchmark]: TraceAbstraction took 6770.36ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 58.1MB in the beginning and 109.3MB in the end (delta: -51.2MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2023-08-31 23:30:43,509 INFO L158 Benchmark]: Witness Printer took 40.77ms. Allocated memory is still 144.7MB. Free memory was 109.3MB in the beginning and 106.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:30:43,510 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.97ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.9MB in the beginning and 53.2MB in the end (delta: -15.3MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.08ms. Allocated memory is still 81.8MB. Free memory was 53.2MB in the beginning and 51.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.33ms. Allocated memory is still 81.8MB. Free memory was 51.1MB in the beginning and 49.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 434.34ms. Allocated memory is still 81.8MB. Free memory was 49.7MB in the beginning and 58.9MB in the end (delta: -9.2MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6770.36ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 58.1MB in the beginning and 109.3MB in the end (delta: -51.2MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Witness Printer took 40.77ms. Allocated memory is still 144.7MB. Free memory was 109.3MB in the beginning and 106.2MB 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: 2.7s, 95 PlacesBefore, 34 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 8 FixpointIterations, 28 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 94 TotalNumberOfCompositions, 3595 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1790, independent: 1661, independent conditional: 0, independent unconditional: 1661, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 853, independent: 819, independent conditional: 0, independent unconditional: 819, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1790, independent: 842, independent conditional: 0, independent unconditional: 842, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 853, unknown conditional: 0, unknown unconditional: 853] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 451 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 296 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1069 IncrementalHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 43 mSDtfsCounter, 1069 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=4, InterpolantAutomatonStates: 49, 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, 1.8s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 23:30:43,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE