./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_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/rfi002_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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --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 23:25:49,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:25:49,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:25:49,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:25:49,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:25:49,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:25:49,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:25:49,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:25:49,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:25:49,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:25:49,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:25:49,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:25:49,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:25:49,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:25:49,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:25:49,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:25:49,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:25:49,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:25:49,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:25:49,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:25:49,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:25:49,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:25:49,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:25:49,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:25:49,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:25:49,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:25:49,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:25:49,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:25:49,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:25:49,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:25:49,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:25:49,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:25:49,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:25:49,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:25:49,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:25:49,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:25:49,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:25:49,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:25:49,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:25:49,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:25:49,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:25:49,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:25:49,863 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:25:49,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:25:49,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:25:49,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:25:49,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:25:49,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:25:49,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:25:49,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:25:49,867 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:25:49,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:25:49,868 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:25:49,868 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:25:49,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:25:49,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:25:49,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:25:49,869 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:25:49,869 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:25:49,870 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:25:49,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:25:49,870 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:25:49,870 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:25:49,870 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:25:49,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:25:49,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:25:49,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:25:49,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:25:49,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:25:49,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:25:49,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:25:49,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:25:49,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:25:49,873 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:25:49,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:25:49,873 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:25:49,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:25:50,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:25:50,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:25:50,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:25:50,202 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:25:50,202 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:25:50,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-31 23:25:51,260 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:25:51,524 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:25:51,524 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-31 23:25:51,539 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e997ce85a/0af6ebf0a73d43beb04dfecff5948ec2/FLAGdb02079ca [2023-08-31 23:25:51,550 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e997ce85a/0af6ebf0a73d43beb04dfecff5948ec2 [2023-08-31 23:25:51,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:25:51,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:25:51,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:25:51,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:25:51,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:25:51,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:25:51" (1/1) ... [2023-08-31 23:25:51,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d66799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:51, skipping insertion in model container [2023-08-31 23:25:51,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:25:51" (1/1) ... [2023-08-31 23:25:51,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:25:51,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:25:51,742 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/rfi002_tso.i[987,1000] [2023-08-31 23:25:51,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:25:52,007 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:25:52,020 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/rfi002_tso.i[987,1000] [2023-08-31 23:25:52,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:25:52,136 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:25:52,136 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:25:52,142 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:25:52,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52 WrapperNode [2023-08-31 23:25:52,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:25:52,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:25:52,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:25:52,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:25:52,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,226 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-08-31 23:25:52,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:25:52,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:25:52,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:25:52,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:25:52,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,282 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:25:52,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:25:52,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:25:52,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:25:52,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (1/1) ... [2023-08-31 23:25:52,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:25:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:25:52,327 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 23:25:52,348 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 23:25:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:25:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:25:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:25:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:25:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:25:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:25:52,364 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:25:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:25:52,364 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:25:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:25:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:25:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:25:52,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:25:52,366 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 23:25:52,573 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:25:52,574 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:25:52,954 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:25:53,176 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:25:53,177 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:25:53,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:25:53 BoogieIcfgContainer [2023-08-31 23:25:53,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:25:53,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:25:53,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:25:53,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:25:53,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:25:51" (1/3) ... [2023-08-31 23:25:53,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8470b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:25:53, skipping insertion in model container [2023-08-31 23:25:53,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:52" (2/3) ... [2023-08-31 23:25:53,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8470b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:25:53, skipping insertion in model container [2023-08-31 23:25:53,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:25:53" (3/3) ... [2023-08-31 23:25:53,186 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-08-31 23:25:53,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:25:53,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:25:53,200 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:25:53,250 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:25:53,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 115 transitions, 240 flow [2023-08-31 23:25:53,313 INFO L130 PetriNetUnfolder]: 2/113 cut-off events. [2023-08-31 23:25:53,313 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:25:53,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 113 events. 2/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-31 23:25:53,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 115 transitions, 240 flow [2023-08-31 23:25:53,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 113 transitions, 232 flow [2023-08-31 23:25:53,324 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:25:53,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 113 transitions, 232 flow [2023-08-31 23:25:53,334 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 113 transitions, 232 flow [2023-08-31 23:25:53,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 113 transitions, 232 flow [2023-08-31 23:25:53,355 INFO L130 PetriNetUnfolder]: 2/113 cut-off events. [2023-08-31 23:25:53,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:25:53,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 113 events. 2/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-31 23:25:53,357 INFO L119 LiptonReduction]: Number of co-enabled transitions 1460 [2023-08-31 23:25:58,806 INFO L134 LiptonReduction]: Checked pairs total: 4743 [2023-08-31 23:25:58,807 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-31 23:25:58,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:25:58,858 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;@5495ace8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:25:58,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-31 23:25:58,860 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:25:58,861 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:25:58,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:58,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:25:58,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:25:58,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash 664, now seen corresponding path program 1 times [2023-08-31 23:25:58,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:58,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404172955] [2023-08-31 23:25:58,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:58,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:58,962 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 23:25:58,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404172955] [2023-08-31 23:25:58,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404172955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:58,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:58,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:25:58,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758431890] [2023-08-31 23:25:58,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:58,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:25:58,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:25:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:25:59,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 229 [2023-08-31 23:25:59,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:25:59,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:59,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 229 [2023-08-31 23:25:59,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:59,258 INFO L130 PetriNetUnfolder]: 515/852 cut-off events. [2023-08-31 23:25:59,258 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 23:25:59,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 852 events. 515/852 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3506 event pairs, 515 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1712. Up to 853 conditions per place. [2023-08-31 23:25:59,265 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 22 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-31 23:25:59,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 94 flow [2023-08-31 23:25:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:25:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:25:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 222 transitions. [2023-08-31 23:25:59,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847161572052402 [2023-08-31 23:25:59,276 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 222 transitions. [2023-08-31 23:25:59,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 222 transitions. [2023-08-31 23:25:59,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:59,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 222 transitions. [2023-08-31 23:25:59,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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 23:25:59,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 23:25:59,285 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 23:25:59,287 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 2 states and 222 transitions. [2023-08-31 23:25:59,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 94 flow [2023-08-31 23:25:59,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:25:59,290 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 48 flow [2023-08-31 23:25:59,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-31 23:25:59,294 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-31 23:25:59,294 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 48 flow [2023-08-31 23:25:59,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:25:59,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:59,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:25:59,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:25:59,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:25:59,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash 631124598, now seen corresponding path program 1 times [2023-08-31 23:25:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:59,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842741943] [2023-08-31 23:25:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:59,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:59,629 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 23:25:59,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:59,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842741943] [2023-08-31 23:25:59,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842741943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:59,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:59,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:25:59,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039619315] [2023-08-31 23:25:59,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:25:59,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:25:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:25:59,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 229 [2023-08-31 23:25:59,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 23:25:59,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:59,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 229 [2023-08-31 23:25:59,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:59,856 INFO L130 PetriNetUnfolder]: 455/756 cut-off events. [2023-08-31 23:25:59,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:25:59,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 756 events. 455/756 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3247 event pairs, 35 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1526. Up to 673 conditions per place. [2023-08-31 23:25:59,862 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-31 23:25:59,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 128 flow [2023-08-31 23:25:59,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:25:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:25:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-08-31 23:25:59,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016011644832606 [2023-08-31 23:25:59,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-08-31 23:25:59,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-08-31 23:25:59,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:59,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-08-31 23:25:59,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:25:59,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 23:25:59,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 23:25:59,872 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 48 flow. Second operand 3 states and 323 transitions. [2023-08-31 23:25:59,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 128 flow [2023-08-31 23:25:59,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:25:59,873 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 50 flow [2023-08-31 23:25:59,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-31 23:25:59,874 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-31 23:25:59,874 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 50 flow [2023-08-31 23:25:59,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 23:25:59,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:59,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:25:59,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:25:59,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:25:59,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1909973401, now seen corresponding path program 1 times [2023-08-31 23:25:59,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:59,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981632368] [2023-08-31 23:25:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:59,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:00,035 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 23:26:00,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981632368] [2023-08-31 23:26:00,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981632368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:00,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:00,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:26:00,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142143310] [2023-08-31 23:26:00,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:00,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:26:00,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:00,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:26:00,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:26:00,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 229 [2023-08-31 23:26:00,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:00,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:00,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 229 [2023-08-31 23:26:00,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:00,223 INFO L130 PetriNetUnfolder]: 395/660 cut-off events. [2023-08-31 23:26:00,224 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-31 23:26:00,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 660 events. 395/660 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2606 event pairs, 95 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 1371. Up to 481 conditions per place. [2023-08-31 23:26:00,227 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 26 selfloop transitions, 2 changer transitions 2/30 dead transitions. [2023-08-31 23:26:00,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 128 flow [2023-08-31 23:26:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:26:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:26:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-31 23:26:00,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46870451237263466 [2023-08-31 23:26:00,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-31 23:26:00,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-31 23:26:00,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:00,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-31 23:26:00,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 23:26:00,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 23:26:00,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 23:26:00,234 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 50 flow. Second operand 3 states and 322 transitions. [2023-08-31 23:26:00,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 128 flow [2023-08-31 23:26:00,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:26:00,235 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2023-08-31 23:26:00,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-31 23:26:00,237 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-31 23:26:00,239 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2023-08-31 23:26:00,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:00,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:00,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:00,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:26:00,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:00,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:00,241 INFO L85 PathProgramCache]: Analyzing trace with hash 920443590, now seen corresponding path program 1 times [2023-08-31 23:26:00,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:00,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139076852] [2023-08-31 23:26:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:00,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:00,952 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 23:26:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:00,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139076852] [2023-08-31 23:26:00,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139076852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:00,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:00,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:26:00,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224249338] [2023-08-31 23:26:00,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:26:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:26:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:26:00,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-08-31 23:26:00,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 23:26:00,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:00,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-08-31 23:26:00,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:01,209 INFO L130 PetriNetUnfolder]: 305/534 cut-off events. [2023-08-31 23:26:01,209 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-31 23:26:01,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 534 events. 305/534 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2049 event pairs, 119 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 1107. Up to 311 conditions per place. [2023-08-31 23:26:01,212 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 27 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2023-08-31 23:26:01,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 148 flow [2023-08-31 23:26:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:26:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:26:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2023-08-31 23:26:01,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366812227074236 [2023-08-31 23:26:01,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 400 transitions. [2023-08-31 23:26:01,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 400 transitions. [2023-08-31 23:26:01,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:01,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 400 transitions. [2023-08-31 23:26:01,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 23:26:01,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:01,218 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:01,218 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 4 states and 400 transitions. [2023-08-31 23:26:01,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 148 flow [2023-08-31 23:26:01,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:26:01,220 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 100 flow [2023-08-31 23:26:01,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-31 23:26:01,221 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-08-31 23:26:01,221 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 100 flow [2023-08-31 23:26:01,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 23:26:01,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:01,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:01,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:26:01,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:01,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:01,222 INFO L85 PathProgramCache]: Analyzing trace with hash 920443601, now seen corresponding path program 1 times [2023-08-31 23:26:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:01,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861024928] [2023-08-31 23:26:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:01,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:01,471 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 23:26:01,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:01,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861024928] [2023-08-31 23:26:01,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861024928] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:01,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:01,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:26:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581493915] [2023-08-31 23:26:01,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:01,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:26:01,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:01,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:26:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:26:01,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 229 [2023-08-31 23:26:01,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:01,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:01,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 229 [2023-08-31 23:26:01,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:01,717 INFO L130 PetriNetUnfolder]: 351/625 cut-off events. [2023-08-31 23:26:01,717 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-31 23:26:01,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 625 events. 351/625 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2508 event pairs, 289 based on Foata normal form. 42/667 useless extension candidates. Maximal degree in co-relation 1613. Up to 373 conditions per place. [2023-08-31 23:26:01,721 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 36 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-31 23:26:01,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 216 flow [2023-08-31 23:26:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:26:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:26:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2023-08-31 23:26:01,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42358078602620086 [2023-08-31 23:26:01,723 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2023-08-31 23:26:01,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2023-08-31 23:26:01,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:01,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2023-08-31 23:26:01,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 23:26:01,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:01,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:01,727 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 100 flow. Second operand 4 states and 388 transitions. [2023-08-31 23:26:01,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 216 flow [2023-08-31 23:26:01,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:26:01,731 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 110 flow [2023-08-31 23:26:01,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-31 23:26:01,734 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-08-31 23:26:01,734 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 110 flow [2023-08-31 23:26:01,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:01,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:01,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:01,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:26:01,735 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:01,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash -323829963, now seen corresponding path program 1 times [2023-08-31 23:26:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:01,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480954762] [2023-08-31 23:26:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:02,388 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 23:26:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480954762] [2023-08-31 23:26:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480954762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:02,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:26:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979252322] [2023-08-31 23:26:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:02,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:26:02,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:02,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:26:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:26:02,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-08-31 23:26:02,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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 23:26:02,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:02,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-08-31 23:26:02,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:02,642 INFO L130 PetriNetUnfolder]: 335/605 cut-off events. [2023-08-31 23:26:02,645 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2023-08-31 23:26:02,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 605 events. 335/605 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2510 event pairs, 197 based on Foata normal form. 12/617 useless extension candidates. Maximal degree in co-relation 1609. Up to 422 conditions per place. [2023-08-31 23:26:02,649 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 29 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2023-08-31 23:26:02,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 234 flow [2023-08-31 23:26:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:26:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:26:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-08-31 23:26:02,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388646288209607 [2023-08-31 23:26:02,651 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-08-31 23:26:02,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-08-31 23:26:02,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:02,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-08-31 23:26:02,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 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 23:26:02,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:02,656 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:02,657 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 110 flow. Second operand 4 states and 402 transitions. [2023-08-31 23:26:02,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 234 flow [2023-08-31 23:26:02,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:26:02,661 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 160 flow [2023-08-31 23:26:02,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-31 23:26:02,664 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-31 23:26:02,665 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 160 flow [2023-08-31 23:26:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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 23:26:02,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:02,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:02,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:26:02,665 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:02,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash -887303660, now seen corresponding path program 1 times [2023-08-31 23:26:02,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:02,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021584440] [2023-08-31 23:26:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:02,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:02,947 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 23:26:02,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:02,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021584440] [2023-08-31 23:26:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021584440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:02,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:02,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:26:02,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925144959] [2023-08-31 23:26:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:02,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:26:02,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:02,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:26:02,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:26:03,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 229 [2023-08-31 23:26:03,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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 23:26:03,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:03,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 229 [2023-08-31 23:26:03,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:03,141 INFO L130 PetriNetUnfolder]: 293/522 cut-off events. [2023-08-31 23:26:03,142 INFO L131 PetriNetUnfolder]: For 555/555 co-relation queries the response was YES. [2023-08-31 23:26:03,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 522 events. 293/522 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2033 event pairs, 197 based on Foata normal form. 21/543 useless extension candidates. Maximal degree in co-relation 1519. Up to 515 conditions per place. [2023-08-31 23:26:03,145 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 21 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-08-31 23:26:03,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 155 flow [2023-08-31 23:26:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:26:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:26:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2023-08-31 23:26:03,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40611353711790393 [2023-08-31 23:26:03,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2023-08-31 23:26:03,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2023-08-31 23:26:03,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:03,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2023-08-31 23:26:03,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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 23:26:03,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:03,151 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:03,151 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 160 flow. Second operand 4 states and 372 transitions. [2023-08-31 23:26:03,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 155 flow [2023-08-31 23:26:03,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 144 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-31 23:26:03,154 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 88 flow [2023-08-31 23:26:03,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-08-31 23:26:03,155 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-31 23:26:03,155 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 88 flow [2023-08-31 23:26:03,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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 23:26:03,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:03,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:03,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:26:03,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:03,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:03,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1621822068, now seen corresponding path program 1 times [2023-08-31 23:26:03,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:03,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049181796] [2023-08-31 23:26:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:03,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:04,404 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 23:26:04,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:04,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049181796] [2023-08-31 23:26:04,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049181796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:04,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:04,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 23:26:04,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036072088] [2023-08-31 23:26:04,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:04,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 23:26:04,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 23:26:04,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-31 23:26:04,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-08-31 23:26:04,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 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 23:26:04,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:04,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-08-31 23:26:04,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:04,831 INFO L130 PetriNetUnfolder]: 393/693 cut-off events. [2023-08-31 23:26:04,832 INFO L131 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2023-08-31 23:26:04,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 693 events. 393/693 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2971 event pairs, 74 based on Foata normal form. 7/700 useless extension candidates. Maximal degree in co-relation 1955. Up to 467 conditions per place. [2023-08-31 23:26:04,836 INFO L137 encePairwiseOnDemand]: 221/229 looper letters, 37 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-31 23:26:04,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 281 flow [2023-08-31 23:26:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:26:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:26:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 593 transitions. [2023-08-31 23:26:04,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315866084425036 [2023-08-31 23:26:04,838 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 593 transitions. [2023-08-31 23:26:04,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 593 transitions. [2023-08-31 23:26:04,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:04,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 593 transitions. [2023-08-31 23:26:04,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.83333333333333) internal successors, (593), 6 states have internal predecessors, (593), 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 23:26:04,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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 23:26:04,843 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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 23:26:04,843 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 88 flow. Second operand 6 states and 593 transitions. [2023-08-31 23:26:04,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 281 flow [2023-08-31 23:26:04,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:26:04,845 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 168 flow [2023-08-31 23:26:04,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-08-31 23:26:04,845 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-08-31 23:26:04,846 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 168 flow [2023-08-31 23:26:04,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 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 23:26:04,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:04,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:04,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:26:04,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:04,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1308085620, now seen corresponding path program 2 times [2023-08-31 23:26:04,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:04,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515051120] [2023-08-31 23:26:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:04,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:06,261 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 23:26:06,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:06,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515051120] [2023-08-31 23:26:06,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515051120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:06,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:06,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 23:26:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099095617] [2023-08-31 23:26:06,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:06,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 23:26:06,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 23:26:06,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-31 23:26:06,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 229 [2023-08-31 23:26:06,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 94.625) internal successors, (757), 8 states have internal predecessors, (757), 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 23:26:06,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:06,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 229 [2023-08-31 23:26:06,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:06,675 INFO L130 PetriNetUnfolder]: 463/816 cut-off events. [2023-08-31 23:26:06,675 INFO L131 PetriNetUnfolder]: For 963/963 co-relation queries the response was YES. [2023-08-31 23:26:06,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 816 events. 463/816 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3678 event pairs, 106 based on Foata normal form. 6/822 useless extension candidates. Maximal degree in co-relation 2743. Up to 530 conditions per place. [2023-08-31 23:26:06,680 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 53 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2023-08-31 23:26:06,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 62 transitions, 451 flow [2023-08-31 23:26:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:26:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:26:06,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 707 transitions. [2023-08-31 23:26:06,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410480349344978 [2023-08-31 23:26:06,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 707 transitions. [2023-08-31 23:26:06,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 707 transitions. [2023-08-31 23:26:06,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:06,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 707 transitions. [2023-08-31 23:26:06,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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 23:26:06,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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 23:26:06,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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 23:26:06,689 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 168 flow. Second operand 7 states and 707 transitions. [2023-08-31 23:26:06,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 62 transitions, 451 flow [2023-08-31 23:26:06,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 433 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-31 23:26:06,693 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 218 flow [2023-08-31 23:26:06,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-08-31 23:26:06,694 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-31 23:26:06,694 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 218 flow [2023-08-31 23:26:06,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.625) internal successors, (757), 8 states have internal predecessors, (757), 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 23:26:06,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:06,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:06,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:26:06,695 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:06,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash -44446627, now seen corresponding path program 1 times [2023-08-31 23:26:06,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:06,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149819571] [2023-08-31 23:26:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:06,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:08,437 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 23:26:08,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:08,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149819571] [2023-08-31 23:26:08,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149819571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:08,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:08,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:26:08,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017482948] [2023-08-31 23:26:08,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:08,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:26:08,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:26:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:26:08,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 229 [2023-08-31 23:26:08,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 218 flow. Second operand has 9 states, 9 states have (on average 94.55555555555556) internal successors, (851), 9 states have internal predecessors, (851), 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 23:26:08,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:08,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 229 [2023-08-31 23:26:08,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:08,884 INFO L130 PetriNetUnfolder]: 457/806 cut-off events. [2023-08-31 23:26:08,884 INFO L131 PetriNetUnfolder]: For 1226/1226 co-relation queries the response was YES. [2023-08-31 23:26:08,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 806 events. 457/806 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3624 event pairs, 104 based on Foata normal form. 4/810 useless extension candidates. Maximal degree in co-relation 2814. Up to 456 conditions per place. [2023-08-31 23:26:08,890 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 38 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2023-08-31 23:26:08,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 392 flow [2023-08-31 23:26:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:26:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:26:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2023-08-31 23:26:08,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393013100436681 [2023-08-31 23:26:08,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2023-08-31 23:26:08,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2023-08-31 23:26:08,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:08,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2023-08-31 23:26:08,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 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 23:26:08,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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 23:26:08,897 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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 23:26:08,898 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 218 flow. Second operand 5 states and 503 transitions. [2023-08-31 23:26:08,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 392 flow [2023-08-31 23:26:08,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 378 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 23:26:08,903 INFO L231 Difference]: Finished difference. Result has 52 places, 33 transitions, 237 flow [2023-08-31 23:26:08,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2023-08-31 23:26:08,904 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-31 23:26:08,904 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 237 flow [2023-08-31 23:26:08,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 94.55555555555556) internal successors, (851), 9 states have internal predecessors, (851), 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 23:26:08,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:08,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:08,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:26:08,905 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:08,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:08,906 INFO L85 PathProgramCache]: Analyzing trace with hash -44437947, now seen corresponding path program 1 times [2023-08-31 23:26:08,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:08,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129635874] [2023-08-31 23:26:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:08,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:10,412 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 23:26:10,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129635874] [2023-08-31 23:26:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129635874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:10,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:10,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 23:26:10,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309872175] [2023-08-31 23:26:10,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:10,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 23:26:10,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 23:26:10,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-31 23:26:10,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 229 [2023-08-31 23:26:10,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 33 transitions, 237 flow. Second operand has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 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 23:26:10,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:10,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 229 [2023-08-31 23:26:10,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:11,063 INFO L130 PetriNetUnfolder]: 559/1028 cut-off events. [2023-08-31 23:26:11,063 INFO L131 PetriNetUnfolder]: For 2328/2328 co-relation queries the response was YES. [2023-08-31 23:26:11,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 1028 events. 559/1028 cut-off events. For 2328/2328 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5233 event pairs, 117 based on Foata normal form. 18/1046 useless extension candidates. Maximal degree in co-relation 3784. Up to 405 conditions per place. [2023-08-31 23:26:11,070 INFO L137 encePairwiseOnDemand]: 218/229 looper letters, 40 selfloop transitions, 6 changer transitions 40/86 dead transitions. [2023-08-31 23:26:11,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 702 flow [2023-08-31 23:26:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:26:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:26:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 754 transitions. [2023-08-31 23:26:11,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115720524017467 [2023-08-31 23:26:11,073 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 754 transitions. [2023-08-31 23:26:11,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 754 transitions. [2023-08-31 23:26:11,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:11,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 754 transitions. [2023-08-31 23:26:11,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.25) internal successors, (754), 8 states have internal predecessors, (754), 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 23:26:11,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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 23:26:11,079 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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 23:26:11,079 INFO L175 Difference]: Start difference. First operand has 52 places, 33 transitions, 237 flow. Second operand 8 states and 754 transitions. [2023-08-31 23:26:11,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 702 flow [2023-08-31 23:26:11,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 86 transitions, 658 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-31 23:26:11,087 INFO L231 Difference]: Finished difference. Result has 59 places, 34 transitions, 257 flow [2023-08-31 23:26:11,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=257, PETRI_PLACES=59, PETRI_TRANSITIONS=34} [2023-08-31 23:26:11,088 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-31 23:26:11,088 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 34 transitions, 257 flow [2023-08-31 23:26:11,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 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 23:26:11,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:11,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:11,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:26:11,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:11,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1000490425, now seen corresponding path program 2 times [2023-08-31 23:26:11,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:11,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130828200] [2023-08-31 23:26:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:11,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:11,489 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 23:26:11,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:11,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130828200] [2023-08-31 23:26:11,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130828200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:11,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:11,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:26:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778464352] [2023-08-31 23:26:11,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:11,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:26:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:26:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:26:11,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 229 [2023-08-31 23:26:11,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 34 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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 23:26:11,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:11,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 229 [2023-08-31 23:26:11,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:11,691 INFO L130 PetriNetUnfolder]: 287/572 cut-off events. [2023-08-31 23:26:11,691 INFO L131 PetriNetUnfolder]: For 1756/1756 co-relation queries the response was YES. [2023-08-31 23:26:11,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 572 events. 287/572 cut-off events. For 1756/1756 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2647 event pairs, 122 based on Foata normal form. 18/590 useless extension candidates. Maximal degree in co-relation 2333. Up to 370 conditions per place. [2023-08-31 23:26:11,695 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 30 selfloop transitions, 8 changer transitions 13/51 dead transitions. [2023-08-31 23:26:11,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 450 flow [2023-08-31 23:26:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:26:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:26:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2023-08-31 23:26:11,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519650655021834 [2023-08-31 23:26:11,698 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2023-08-31 23:26:11,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2023-08-31 23:26:11,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:11,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2023-08-31 23:26:11,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 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 23:26:11,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:11,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 23:26:11,701 INFO L175 Difference]: Start difference. First operand has 59 places, 34 transitions, 257 flow. Second operand 4 states and 414 transitions. [2023-08-31 23:26:11,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 450 flow [2023-08-31 23:26:11,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 434 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-31 23:26:11,706 INFO L231 Difference]: Finished difference. Result has 57 places, 34 transitions, 272 flow [2023-08-31 23:26:11,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=34} [2023-08-31 23:26:11,706 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-31 23:26:11,707 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 272 flow [2023-08-31 23:26:11,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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 23:26:11,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:11,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:11,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:26:11,707 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:11,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1986469247, now seen corresponding path program 3 times [2023-08-31 23:26:11,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:11,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014355230] [2023-08-31 23:26:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:11,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:13,033 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 23:26:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014355230] [2023-08-31 23:26:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014355230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:13,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:13,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 23:26:13,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071894829] [2023-08-31 23:26:13,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:13,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 23:26:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 23:26:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-31 23:26:13,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 229 [2023-08-31 23:26:13,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 272 flow. Second operand has 11 states, 11 states have (on average 91.27272727272727) internal successors, (1004), 11 states have internal predecessors, (1004), 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 23:26:13,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:13,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 229 [2023-08-31 23:26:13,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:13,488 INFO L130 PetriNetUnfolder]: 205/433 cut-off events. [2023-08-31 23:26:13,488 INFO L131 PetriNetUnfolder]: For 1613/1613 co-relation queries the response was YES. [2023-08-31 23:26:13,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 433 events. 205/433 cut-off events. For 1613/1613 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1928 event pairs, 91 based on Foata normal form. 15/448 useless extension candidates. Maximal degree in co-relation 1881. Up to 251 conditions per place. [2023-08-31 23:26:13,491 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 20 selfloop transitions, 2 changer transitions 44/66 dead transitions. [2023-08-31 23:26:13,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 644 flow [2023-08-31 23:26:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:26:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:26:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 771 transitions. [2023-08-31 23:26:13,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42085152838427947 [2023-08-31 23:26:13,494 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 771 transitions. [2023-08-31 23:26:13,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 771 transitions. [2023-08-31 23:26:13,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:13,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 771 transitions. [2023-08-31 23:26:13,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.375) internal successors, (771), 8 states have internal predecessors, (771), 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 23:26:13,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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 23:26:13,498 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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 23:26:13,499 INFO L175 Difference]: Start difference. First operand has 57 places, 34 transitions, 272 flow. Second operand 8 states and 771 transitions. [2023-08-31 23:26:13,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 644 flow [2023-08-31 23:26:13,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 620 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-31 23:26:13,503 INFO L231 Difference]: Finished difference. Result has 63 places, 20 transitions, 144 flow [2023-08-31 23:26:13,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=20} [2023-08-31 23:26:13,504 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-08-31 23:26:13,505 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 20 transitions, 144 flow [2023-08-31 23:26:13,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 91.27272727272727) internal successors, (1004), 11 states have internal predecessors, (1004), 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 23:26:13,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:13,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:13,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:26:13,506 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:13,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash 255562789, now seen corresponding path program 4 times [2023-08-31 23:26:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:13,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357737989] [2023-08-31 23:26:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:13,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:14,087 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 23:26:14,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:14,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357737989] [2023-08-31 23:26:14,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357737989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:14,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:14,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:26:14,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021396059] [2023-08-31 23:26:14,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:14,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:26:14,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:14,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:26:14,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:26:14,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-08-31 23:26:14,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 20 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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 23:26:14,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:14,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-08-31 23:26:14,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:14,241 INFO L130 PetriNetUnfolder]: 153/282 cut-off events. [2023-08-31 23:26:14,241 INFO L131 PetriNetUnfolder]: For 934/934 co-relation queries the response was YES. [2023-08-31 23:26:14,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 282 events. 153/282 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 937 event pairs, 40 based on Foata normal form. 3/285 useless extension candidates. Maximal degree in co-relation 1214. Up to 204 conditions per place. [2023-08-31 23:26:14,243 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 25 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2023-08-31 23:26:14,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 34 transitions, 301 flow [2023-08-31 23:26:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:26:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:26:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2023-08-31 23:26:14,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43056768558951963 [2023-08-31 23:26:14,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2023-08-31 23:26:14,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2023-08-31 23:26:14,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:14,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2023-08-31 23:26:14,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 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 23:26:14,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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 23:26:14,249 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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 23:26:14,250 INFO L175 Difference]: Start difference. First operand has 63 places, 20 transitions, 144 flow. Second operand 5 states and 493 transitions. [2023-08-31 23:26:14,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 34 transitions, 301 flow [2023-08-31 23:26:14,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 241 flow, removed 20 selfloop flow, removed 15 redundant places. [2023-08-31 23:26:14,253 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 185 flow [2023-08-31 23:26:14,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-08-31 23:26:14,254 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-31 23:26:14,254 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 185 flow [2023-08-31 23:26:14,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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 23:26:14,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:14,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:14,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 23:26:14,255 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:14,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 255573019, now seen corresponding path program 5 times [2023-08-31 23:26:14,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350574502] [2023-08-31 23:26:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:14,969 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 23:26:14,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350574502] [2023-08-31 23:26:14,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350574502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:14,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:14,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:26:14,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253809677] [2023-08-31 23:26:14,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:14,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 23:26:14,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 23:26:14,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-31 23:26:15,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-08-31 23:26:15,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 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 23:26:15,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:15,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-08-31 23:26:15,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:15,393 INFO L130 PetriNetUnfolder]: 201/403 cut-off events. [2023-08-31 23:26:15,393 INFO L131 PetriNetUnfolder]: For 1119/1119 co-relation queries the response was YES. [2023-08-31 23:26:15,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 403 events. 201/403 cut-off events. For 1119/1119 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1732 event pairs, 34 based on Foata normal form. 18/421 useless extension candidates. Maximal degree in co-relation 1723. Up to 169 conditions per place. [2023-08-31 23:26:15,395 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 34 selfloop transitions, 6 changer transitions 23/63 dead transitions. [2023-08-31 23:26:15,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 567 flow [2023-08-31 23:26:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:26:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:26:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 691 transitions. [2023-08-31 23:26:15,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310667498440424 [2023-08-31 23:26:15,399 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 691 transitions. [2023-08-31 23:26:15,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 691 transitions. [2023-08-31 23:26:15,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:15,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 691 transitions. [2023-08-31 23:26:15,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 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 23:26:15,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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 23:26:15,404 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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 23:26:15,404 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 185 flow. Second operand 7 states and 691 transitions. [2023-08-31 23:26:15,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 567 flow [2023-08-31 23:26:15,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 480 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-08-31 23:26:15,408 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 188 flow [2023-08-31 23:26:15,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2023-08-31 23:26:15,409 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-31 23:26:15,409 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 188 flow [2023-08-31 23:26:15,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 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 23:26:15,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:15,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:15,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 23:26:15,410 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:15,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1190269735, now seen corresponding path program 6 times [2023-08-31 23:26:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:15,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193112677] [2023-08-31 23:26:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:15,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:15,871 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 23:26:15,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:15,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193112677] [2023-08-31 23:26:15,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193112677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:15,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:15,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:26:15,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968286530] [2023-08-31 23:26:15,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:15,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:26:15,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:26:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:26:15,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-08-31 23:26:15,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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 23:26:15,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:15,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-08-31 23:26:15,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:16,030 INFO L130 PetriNetUnfolder]: 114/247 cut-off events. [2023-08-31 23:26:16,031 INFO L131 PetriNetUnfolder]: For 825/825 co-relation queries the response was YES. [2023-08-31 23:26:16,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 247 events. 114/247 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 913 event pairs, 41 based on Foata normal form. 18/265 useless extension candidates. Maximal degree in co-relation 984. Up to 149 conditions per place. [2023-08-31 23:26:16,032 INFO L137 encePairwiseOnDemand]: 221/229 looper letters, 25 selfloop transitions, 6 changer transitions 16/47 dead transitions. [2023-08-31 23:26:16,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 397 flow [2023-08-31 23:26:16,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:26:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:26:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2023-08-31 23:26:16,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43231441048034935 [2023-08-31 23:26:16,039 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2023-08-31 23:26:16,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2023-08-31 23:26:16,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:16,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2023-08-31 23:26:16,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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 23:26:16,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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 23:26:16,043 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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 23:26:16,043 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 188 flow. Second operand 6 states and 594 transitions. [2023-08-31 23:26:16,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 397 flow [2023-08-31 23:26:16,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 382 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-31 23:26:16,046 INFO L231 Difference]: Finished difference. Result has 49 places, 25 transitions, 188 flow [2023-08-31 23:26:16,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=25} [2023-08-31 23:26:16,046 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-31 23:26:16,046 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 25 transitions, 188 flow [2023-08-31 23:26:16,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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 23:26:16,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:16,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:16,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 23:26:16,047 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:16,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:16,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1530125255, now seen corresponding path program 7 times [2023-08-31 23:26:16,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:16,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125909901] [2023-08-31 23:26:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:16,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:17,045 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 23:26:17,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:17,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125909901] [2023-08-31 23:26:17,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125909901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:17,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:17,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 23:26:17,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772731150] [2023-08-31 23:26:17,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:17,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 23:26:17,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:17,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 23:26:17,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-31 23:26:17,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 229 [2023-08-31 23:26:17,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 25 transitions, 188 flow. Second operand has 10 states, 10 states have (on average 90.4) internal successors, (904), 10 states have internal predecessors, (904), 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 23:26:17,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:17,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 229 [2023-08-31 23:26:17,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:17,573 INFO L130 PetriNetUnfolder]: 123/248 cut-off events. [2023-08-31 23:26:17,573 INFO L131 PetriNetUnfolder]: For 849/849 co-relation queries the response was YES. [2023-08-31 23:26:17,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 248 events. 123/248 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 882 event pairs, 17 based on Foata normal form. 9/257 useless extension candidates. Maximal degree in co-relation 1112. Up to 89 conditions per place. [2023-08-31 23:26:17,575 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 24 selfloop transitions, 4 changer transitions 55/83 dead transitions. [2023-08-31 23:26:17,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 804 flow [2023-08-31 23:26:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 23:26:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 23:26:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1041 transitions. [2023-08-31 23:26:17,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132592298531163 [2023-08-31 23:26:17,578 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1041 transitions. [2023-08-31 23:26:17,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1041 transitions. [2023-08-31 23:26:17,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:17,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1041 transitions. [2023-08-31 23:26:17,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 94.63636363636364) internal successors, (1041), 11 states have internal predecessors, (1041), 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 23:26:17,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 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 23:26:17,585 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 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 23:26:17,585 INFO L175 Difference]: Start difference. First operand has 49 places, 25 transitions, 188 flow. Second operand 11 states and 1041 transitions. [2023-08-31 23:26:17,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 804 flow [2023-08-31 23:26:17,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 83 transitions, 736 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-08-31 23:26:17,589 INFO L231 Difference]: Finished difference. Result has 60 places, 25 transitions, 205 flow [2023-08-31 23:26:17,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=205, PETRI_PLACES=60, PETRI_TRANSITIONS=25} [2023-08-31 23:26:17,590 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-31 23:26:17,591 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 25 transitions, 205 flow [2023-08-31 23:26:17,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.4) internal successors, (904), 10 states have internal predecessors, (904), 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 23:26:17,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:17,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:17,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 23:26:17,592 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:26:17,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:17,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1899426405, now seen corresponding path program 8 times [2023-08-31 23:26:17,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:17,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639539616] [2023-08-31 23:26:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:17,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:18,307 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 23:26:18,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:18,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639539616] [2023-08-31 23:26:18,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639539616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:18,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:18,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 23:26:18,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337488725] [2023-08-31 23:26:18,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:18,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 23:26:18,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:18,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 23:26:18,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-31 23:26:18,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 229 [2023-08-31 23:26:18,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 25 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 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 23:26:18,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:18,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 229 [2023-08-31 23:26:18,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:18,467 INFO L130 PetriNetUnfolder]: 23/64 cut-off events. [2023-08-31 23:26:18,467 INFO L131 PetriNetUnfolder]: For 363/363 co-relation queries the response was YES. [2023-08-31 23:26:18,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 64 events. 23/64 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 2 based on Foata normal form. 9/73 useless extension candidates. Maximal degree in co-relation 290. Up to 26 conditions per place. [2023-08-31 23:26:18,468 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-31 23:26:18,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 29 transitions, 268 flow [2023-08-31 23:26:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:26:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:26:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-08-31 23:26:18,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4272197962154294 [2023-08-31 23:26:18,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-08-31 23:26:18,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-08-31 23:26:18,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:18,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-08-31 23:26:18,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 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 23:26:18,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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 23:26:18,474 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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 23:26:18,474 INFO L175 Difference]: Start difference. First operand has 60 places, 25 transitions, 205 flow. Second operand 6 states and 587 transitions. [2023-08-31 23:26:18,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 29 transitions, 268 flow [2023-08-31 23:26:18,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 203 flow, removed 21 selfloop flow, removed 15 redundant places. [2023-08-31 23:26:18,476 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-31 23:26:18,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-31 23:26:18,477 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-31 23:26:18,477 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-31 23:26:18,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 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 23:26:18,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-31 23:26:18,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2023-08-31 23:26:18,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-31 23:26:18,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-31 23:26:18,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-31 23:26:18,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-31 23:26:18,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 12 remaining) [2023-08-31 23:26:18,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 12 remaining) [2023-08-31 23:26:18,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-08-31 23:26:18,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-08-31 23:26:18,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-08-31 23:26:18,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2023-08-31 23:26:18,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 23:26:18,482 INFO L445 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:18,486 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:26:18,486 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:26:18,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:26:18 BasicIcfg [2023-08-31 23:26:18,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:26:18,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:26:18,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:26:18,490 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:26:18,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:25:53" (3/4) ... [2023-08-31 23:26:18,492 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:26:18,496 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:26:18,496 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:26:18,502 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2023-08-31 23:26:18,502 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-31 23:26:18,502 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-31 23:26:18,503 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:26:18,543 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:26:18,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:26:18,544 INFO L158 Benchmark]: Toolchain (without parser) took 26990.89ms. Allocated memory was 69.2MB in the beginning and 400.6MB in the end (delta: 331.4MB). Free memory was 40.9MB in the beginning and 182.5MB in the end (delta: -141.6MB). Peak memory consumption was 188.9MB. Max. memory is 16.1GB. [2023-08-31 23:26:18,545 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:26:18,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 587.25ms. Allocated memory is still 69.2MB. Free memory was 40.8MB in the beginning and 45.8MB in the end (delta: -5.0MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2023-08-31 23:26:18,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.56ms. Allocated memory is still 69.2MB. Free memory was 45.8MB in the beginning and 42.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:26:18,545 INFO L158 Benchmark]: Boogie Preprocessor took 65.60ms. Allocated memory is still 69.2MB. Free memory was 42.2MB in the beginning and 39.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:26:18,546 INFO L158 Benchmark]: RCFGBuilder took 885.04ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 39.8MB in the beginning and 38.8MB in the end (delta: 977.7kB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-08-31 23:26:18,548 INFO L158 Benchmark]: TraceAbstraction took 25307.97ms. Allocated memory was 83.9MB in the beginning and 400.6MB in the end (delta: 316.7MB). Free memory was 38.1MB in the beginning and 186.7MB in the end (delta: -148.6MB). Peak memory consumption was 167.5MB. Max. memory is 16.1GB. [2023-08-31 23:26:18,548 INFO L158 Benchmark]: Witness Printer took 54.47ms. Allocated memory is still 400.6MB. Free memory was 186.7MB in the beginning and 182.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:26:18,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 587.25ms. Allocated memory is still 69.2MB. Free memory was 40.8MB in the beginning and 45.8MB in the end (delta: -5.0MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.56ms. Allocated memory is still 69.2MB. Free memory was 45.8MB in the beginning and 42.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.60ms. Allocated memory is still 69.2MB. Free memory was 42.2MB in the beginning and 39.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 885.04ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 39.8MB in the beginning and 38.8MB in the end (delta: 977.7kB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 25307.97ms. Allocated memory was 83.9MB in the beginning and 400.6MB in the end (delta: 316.7MB). Free memory was 38.1MB in the beginning and 186.7MB in the end (delta: -148.6MB). Peak memory consumption was 167.5MB. Max. memory is 16.1GB. * Witness Printer took 54.47ms. Allocated memory is still 400.6MB. Free memory was 186.7MB in the beginning and 182.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 118 PlacesBefore, 33 PlacesAfterwards, 113 TransitionsBefore, 26 TransitionsAfterwards, 1460 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 114 TotalNumberOfCompositions, 4743 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1480, independent: 1278, independent conditional: 0, independent unconditional: 1278, dependent: 202, dependent conditional: 0, dependent unconditional: 202, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 745, independent: 708, independent conditional: 0, independent unconditional: 708, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1480, independent: 570, independent conditional: 0, independent unconditional: 570, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 745, unknown conditional: 0, unknown unconditional: 745] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 874]: 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 5 procedures, 137 locations, 12 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: 25.2s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 833 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 582 mSDsluCounter, 1010 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 874 mSDsCounter, 420 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2706 IncrementalHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 420 mSolverCounterUnsat, 136 mSDtfsCounter, 2706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=12, InterpolantAutomatonStates: 97, 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 3409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 23:26:18,577 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