./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/weaver/fibonacci.wvr.c -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 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:24:32,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:24:32,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:24:32,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:24:32,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:24:32,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:24:32,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:24:32,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:24:32,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:24:32,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:24:32,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:24:32,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:24:32,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:24:32,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:24:32,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:24:32,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:24:32,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:24:32,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:24:32,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:24:32,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:24:32,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:24:32,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:24:32,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:24:32,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:24:32,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:24:32,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:24:32,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:24:32,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:24:32,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:24:32,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:24:32,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:24:32,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:24:32,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:24:32,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:24:32,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:24:32,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:24:32,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:24:32,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:24:32,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:24:32,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:24:32,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:24:32,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:24:32,129 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:24:32,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:24:32,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:24:32,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:24:32,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:24:32,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:24:32,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:24:32,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:24:32,132 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:24:32,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:24:32,133 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:24:32,133 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:24:32,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:24:32,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:24:32,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:24:32,133 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:24:32,134 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:24:32,134 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:24:32,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:24:32,134 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:24:32,134 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:24:32,135 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:24:32,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:24:32,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:24:32,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:24:32,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:24:32,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:24:32,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:24:32,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:24:32,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:24:32,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:24:32,137 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:24:32,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:24:32,137 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:24:32,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:24:32,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:24:32,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:24:32,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:24:32,494 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:24:32,495 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:24:32,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-08-30 05:24:33,724 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:24:33,966 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:24:33,966 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-08-30 05:24:33,972 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c99c200f0/e6f2eb24d85b43b3aeb569e703d339e5/FLAG8d6a1ee9a [2023-08-30 05:24:33,983 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c99c200f0/e6f2eb24d85b43b3aeb569e703d339e5 [2023-08-30 05:24:33,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:24:33,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:24:33,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:24:33,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:24:33,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:24:33,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:24:33" (1/1) ... [2023-08-30 05:24:33,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c09161a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:33, skipping insertion in model container [2023-08-30 05:24:33,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:24:33" (1/1) ... [2023-08-30 05:24:33,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:24:34,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:24:34,158 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c[2330,2343] [2023-08-30 05:24:34,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:24:34,176 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:24:34,194 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c[2330,2343] [2023-08-30 05:24:34,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:24:34,210 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:24:34,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34 WrapperNode [2023-08-30 05:24:34,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:24:34,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:24:34,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:24:34,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:24:34,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,276 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 169 [2023-08-30 05:24:34,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:24:34,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:24:34,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:24:34,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:24:34,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,328 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:24:34,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:24:34,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:24:34,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:24:34,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (1/1) ... [2023-08-30 05:24:34,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:24:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:34,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:24:34,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:24:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:24:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:24:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:24:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:24:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:24:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:24:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:24:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:24:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:24:34,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:24:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:24:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:24:34,423 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:24:34,541 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:24:34,542 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:24:34,895 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:24:34,904 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:24:34,905 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 05:24:34,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:24:34 BoogieIcfgContainer [2023-08-30 05:24:34,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:24:34,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:24:34,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:24:34,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:24:34,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:24:33" (1/3) ... [2023-08-30 05:24:34,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1820a79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:24:34, skipping insertion in model container [2023-08-30 05:24:34,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:34" (2/3) ... [2023-08-30 05:24:34,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1820a79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:24:34, skipping insertion in model container [2023-08-30 05:24:34,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:24:34" (3/3) ... [2023-08-30 05:24:34,915 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-08-30 05:24:34,929 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:24:34,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 05:24:34,930 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:24:35,093 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 05:24:35,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 208 transitions, 432 flow [2023-08-30 05:24:35,271 INFO L130 PetriNetUnfolder]: 14/206 cut-off events. [2023-08-30 05:24:35,272 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:24:35,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 206 events. 14/206 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 351 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-08-30 05:24:35,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 208 transitions, 432 flow [2023-08-30 05:24:35,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 202 transitions, 416 flow [2023-08-30 05:24:35,292 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:24:35,303 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 202 transitions, 416 flow [2023-08-30 05:24:35,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 202 transitions, 416 flow [2023-08-30 05:24:35,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 202 transitions, 416 flow [2023-08-30 05:24:35,372 INFO L130 PetriNetUnfolder]: 14/202 cut-off events. [2023-08-30 05:24:35,372 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:24:35,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 202 events. 14/202 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 330 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-08-30 05:24:35,382 INFO L119 LiptonReduction]: Number of co-enabled transitions 8316 [2023-08-30 05:24:41,655 INFO L134 LiptonReduction]: Checked pairs total: 7464 [2023-08-30 05:24:41,656 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-30 05:24:41,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:24:41,675 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;@3b147a3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:24:41,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 05:24:41,677 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 05:24:41,677 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:24:41,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:41,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:24:41,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:41,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 849, now seen corresponding path program 1 times [2023-08-30 05:24:41,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:41,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721067812] [2023-08-30 05:24:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:41,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:41,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:41,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721067812] [2023-08-30 05:24:41,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721067812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:41,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:41,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:24:41,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509997176] [2023-08-30 05:24:41,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:41,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:24:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:41,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:24:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:24:41,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 438 [2023-08-30 05:24:41,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:41,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:41,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 438 [2023-08-30 05:24:41,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:41,897 INFO L130 PetriNetUnfolder]: 106/169 cut-off events. [2023-08-30 05:24:41,897 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 05:24:41,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 169 events. 106/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 548 event pairs, 45 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 277. Up to 167 conditions per place. [2023-08-30 05:24:41,901 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-30 05:24:41,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 92 flow [2023-08-30 05:24:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:24:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:24:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 404 transitions. [2023-08-30 05:24:41,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611872146118721 [2023-08-30 05:24:41,924 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 404 transitions. [2023-08-30 05:24:41,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 404 transitions. [2023-08-30 05:24:41,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:41,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 404 transitions. [2023-08-30 05:24:41,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:41,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:41,942 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:41,944 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 404 transitions. [2023-08-30 05:24:41,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 92 flow [2023-08-30 05:24:41,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 05:24:41,949 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-08-30 05:24:41,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-30 05:24:41,954 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-08-30 05:24:41,955 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-08-30 05:24:41,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:41,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:41,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:24:41,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:24:41,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:41,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:41,958 INFO L85 PathProgramCache]: Analyzing trace with hash 835753, now seen corresponding path program 1 times [2023-08-30 05:24:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:41,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757437371] [2023-08-30 05:24:41,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:41,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:42,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:42,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757437371] [2023-08-30 05:24:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757437371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:42,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:24:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142828342] [2023-08-30 05:24:42,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:42,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:24:42,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:24:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:24:42,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 438 [2023-08-30 05:24:42,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:42,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 438 [2023-08-30 05:24:42,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:42,205 INFO L130 PetriNetUnfolder]: 99/156 cut-off events. [2023-08-30 05:24:42,206 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:24:42,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 156 events. 99/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 491 event pairs, 42 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-08-30 05:24:42,207 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-30 05:24:42,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2023-08-30 05:24:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:24:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:24:42,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2023-08-30 05:24:42,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4299847792998478 [2023-08-30 05:24:42,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2023-08-30 05:24:42,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2023-08-30 05:24:42,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:42,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2023-08-30 05:24:42,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,216 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 565 transitions. [2023-08-30 05:24:42,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2023-08-30 05:24:42,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:24:42,217 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-08-30 05:24:42,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-30 05:24:42,218 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-08-30 05:24:42,219 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-08-30 05:24:42,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:42,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:24:42,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:24:42,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:42,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:42,221 INFO L85 PathProgramCache]: Analyzing trace with hash 835754, now seen corresponding path program 1 times [2023-08-30 05:24:42,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:42,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239349119] [2023-08-30 05:24:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:42,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:42,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:42,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239349119] [2023-08-30 05:24:42,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239349119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:42,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:42,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:24:42,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039904526] [2023-08-30 05:24:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:42,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:24:42,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:24:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:24:42,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 438 [2023-08-30 05:24:42,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:42,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 438 [2023-08-30 05:24:42,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:42,440 INFO L130 PetriNetUnfolder]: 92/143 cut-off events. [2023-08-30 05:24:42,440 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:24:42,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 143 events. 92/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 425 event pairs, 39 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 288. Up to 140 conditions per place. [2023-08-30 05:24:42,443 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 14 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 05:24:42,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 70 flow [2023-08-30 05:24:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:24:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:24:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-30 05:24:42,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375951293759513 [2023-08-30 05:24:42,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-30 05:24:42,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-30 05:24:42,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:42,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-30 05:24:42,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,453 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 575 transitions. [2023-08-30 05:24:42,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 70 flow [2023-08-30 05:24:42,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:42,455 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2023-08-30 05:24:42,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-08-30 05:24:42,456 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 05:24:42,459 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2023-08-30 05:24:42,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:42,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:24:42,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:24:42,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:42,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:42,462 INFO L85 PathProgramCache]: Analyzing trace with hash 803179486, now seen corresponding path program 1 times [2023-08-30 05:24:42,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:42,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396189183] [2023-08-30 05:24:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:42,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:42,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:42,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396189183] [2023-08-30 05:24:42,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396189183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:42,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:42,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:24:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370974668] [2023-08-30 05:24:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:42,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:24:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:24:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:24:42,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 438 [2023-08-30 05:24:42,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 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) [2023-08-30 05:24:42,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:42,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 438 [2023-08-30 05:24:42,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:42,738 INFO L130 PetriNetUnfolder]: 70/112 cut-off events. [2023-08-30 05:24:42,738 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:24:42,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 112 events. 70/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 306 event pairs, 29 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 227. Up to 109 conditions per place. [2023-08-30 05:24:42,739 INFO L137 encePairwiseOnDemand]: 436/438 looper letters, 13 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 05:24:42,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 67 flow [2023-08-30 05:24:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:24:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:24:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-30 05:24:42,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2023-08-30 05:24:42,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-30 05:24:42,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-30 05:24:42,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:42,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-30 05:24:42,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,758 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 567 transitions. [2023-08-30 05:24:42,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 67 flow [2023-08-30 05:24:42,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:42,759 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-08-30 05:24:42,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-30 05:24:42,761 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 05:24:42,761 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-08-30 05:24:42,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.25) internal successors, (741), 4 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) [2023-08-30 05:24:42,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:42,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:24:42,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:24:42,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:42,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash 803179485, now seen corresponding path program 1 times [2023-08-30 05:24:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007749304] [2023-08-30 05:24:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:42,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:42,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007749304] [2023-08-30 05:24:42,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007749304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:42,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:42,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:24:42,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692516822] [2023-08-30 05:24:42,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:42,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:24:42,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:42,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:24:42,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:24:42,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 438 [2023-08-30 05:24:42,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:42,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 438 [2023-08-30 05:24:42,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:42,941 INFO L130 PetriNetUnfolder]: 48/81 cut-off events. [2023-08-30 05:24:42,942 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:24:42,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 81 events. 48/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 186 event pairs, 19 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 166. Up to 78 conditions per place. [2023-08-30 05:24:42,942 INFO L137 encePairwiseOnDemand]: 436/438 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 05:24:42,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 64 flow [2023-08-30 05:24:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:24:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:24:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-30 05:24:42,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170471841704718 [2023-08-30 05:24:42,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-30 05:24:42,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-30 05:24:42,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:42,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-30 05:24:42,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,950 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 548 transitions. [2023-08-30 05:24:42,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 64 flow [2023-08-30 05:24:42,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:42,951 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-08-30 05:24:42,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-08-30 05:24:42,952 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 05:24:42,952 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-08-30 05:24:42,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:42,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:42,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:42,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:24:42,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:42,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:42,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2033414492, now seen corresponding path program 1 times [2023-08-30 05:24:42,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:42,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002354700] [2023-08-30 05:24:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:42,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:43,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002354700] [2023-08-30 05:24:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002354700] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:43,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:43,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:24:43,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182964830] [2023-08-30 05:24:43,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:43,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:24:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:43,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:24:43,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:24:43,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 438 [2023-08-30 05:24:43,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:43,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 438 [2023-08-30 05:24:43,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:43,334 INFO L130 PetriNetUnfolder]: 64/118 cut-off events. [2023-08-30 05:24:43,334 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:24:43,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 118 events. 64/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 332 event pairs, 1 based on Foata normal form. 1/79 useless extension candidates. Maximal degree in co-relation 243. Up to 85 conditions per place. [2023-08-30 05:24:43,335 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 23 selfloop transitions, 5 changer transitions 5/35 dead transitions. [2023-08-30 05:24:43,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 151 flow [2023-08-30 05:24:43,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 929 transitions. [2023-08-30 05:24:43,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42420091324200915 [2023-08-30 05:24:43,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 929 transitions. [2023-08-30 05:24:43,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 929 transitions. [2023-08-30 05:24:43,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:43,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 929 transitions. [2023-08-30 05:24:43,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.8) internal successors, (929), 5 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,345 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,345 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 5 states and 929 transitions. [2023-08-30 05:24:43,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 151 flow [2023-08-30 05:24:43,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:43,347 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 72 flow [2023-08-30 05:24:43,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-30 05:24:43,348 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-08-30 05:24:43,348 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 72 flow [2023-08-30 05:24:43,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:43,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:43,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:24:43,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:43,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1250727870, now seen corresponding path program 2 times [2023-08-30 05:24:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:43,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957157094] [2023-08-30 05:24:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:43,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:43,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:43,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957157094] [2023-08-30 05:24:43,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957157094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:43,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:43,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:24:43,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859539105] [2023-08-30 05:24:43,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:43,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:24:43,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:43,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:24:43,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:24:43,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 438 [2023-08-30 05:24:43,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:43,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 438 [2023-08-30 05:24:43,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:43,695 INFO L130 PetriNetUnfolder]: 61/110 cut-off events. [2023-08-30 05:24:43,696 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 05:24:43,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 110 events. 61/110 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 286 event pairs, 7 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 318. Up to 85 conditions per place. [2023-08-30 05:24:43,697 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 19 selfloop transitions, 6 changer transitions 5/32 dead transitions. [2023-08-30 05:24:43,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 171 flow [2023-08-30 05:24:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 925 transitions. [2023-08-30 05:24:43,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223744292237443 [2023-08-30 05:24:43,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 925 transitions. [2023-08-30 05:24:43,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 925 transitions. [2023-08-30 05:24:43,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:43,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 925 transitions. [2023-08-30 05:24:43,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,709 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,709 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 72 flow. Second operand 5 states and 925 transitions. [2023-08-30 05:24:43,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 171 flow [2023-08-30 05:24:43,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 169 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:43,712 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 104 flow [2023-08-30 05:24:43,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2023-08-30 05:24:43,714 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2023-08-30 05:24:43,714 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 104 flow [2023-08-30 05:24:43,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:43,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:43,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:43,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:24:43,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:43,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:43,717 INFO L85 PathProgramCache]: Analyzing trace with hash -354825092, now seen corresponding path program 1 times [2023-08-30 05:24:43,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:43,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448169946] [2023-08-30 05:24:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:43,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:43,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:43,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448169946] [2023-08-30 05:24:43,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448169946] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:43,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964683772] [2023-08-30 05:24:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:43,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:43,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:43,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:43,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 05:24:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:43,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 05:24:43,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:43,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:44,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964683772] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:44,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:44,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-30 05:24:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272464942] [2023-08-30 05:24:44,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:24:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:24:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:24:44,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:44,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 104 flow. Second operand has 8 states, 8 states have (on average 183.875) internal successors, (1471), 8 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:44,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:44,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:44,177 INFO L130 PetriNetUnfolder]: 93/168 cut-off events. [2023-08-30 05:24:44,177 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2023-08-30 05:24:44,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 168 events. 93/168 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 499 event pairs, 12 based on Foata normal form. 6/160 useless extension candidates. Maximal degree in co-relation 520. Up to 71 conditions per place. [2023-08-30 05:24:44,179 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 41 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-08-30 05:24:44,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 291 flow [2023-08-30 05:24:44,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 945 transitions. [2023-08-30 05:24:44,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2023-08-30 05:24:44,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 945 transitions. [2023-08-30 05:24:44,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 945 transitions. [2023-08-30 05:24:44,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:44,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 945 transitions. [2023-08-30 05:24:44,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,189 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 104 flow. Second operand 5 states and 945 transitions. [2023-08-30 05:24:44,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 291 flow [2023-08-30 05:24:44,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 275 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 05:24:44,192 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 136 flow [2023-08-30 05:24:44,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-08-30 05:24:44,193 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-08-30 05:24:44,193 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 136 flow [2023-08-30 05:24:44,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 183.875) internal successors, (1471), 8 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:44,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:44,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 05:24:44,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:44,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:44,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash 562130681, now seen corresponding path program 1 times [2023-08-30 05:24:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:44,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665151866] [2023-08-30 05:24:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:44,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:44,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:44,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665151866] [2023-08-30 05:24:44,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665151866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:44,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:44,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:24:44,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23663764] [2023-08-30 05:24:44,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:44,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:24:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:24:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:24:44,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 438 [2023-08-30 05:24:44,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 184.8) internal successors, (924), 5 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:44,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 438 [2023-08-30 05:24:44,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:44,565 INFO L130 PetriNetUnfolder]: 114/211 cut-off events. [2023-08-30 05:24:44,565 INFO L131 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2023-08-30 05:24:44,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 211 events. 114/211 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 666 event pairs, 38 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 744. Up to 134 conditions per place. [2023-08-30 05:24:44,567 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 33 selfloop transitions, 11 changer transitions 6/50 dead transitions. [2023-08-30 05:24:44,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 359 flow [2023-08-30 05:24:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:24:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:24:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1133 transitions. [2023-08-30 05:24:44,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311263318112633 [2023-08-30 05:24:44,571 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1133 transitions. [2023-08-30 05:24:44,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1133 transitions. [2023-08-30 05:24:44,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:44,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1133 transitions. [2023-08-30 05:24:44,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.83333333333334) internal successors, (1133), 6 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,579 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,579 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 136 flow. Second operand 6 states and 1133 transitions. [2023-08-30 05:24:44,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 359 flow [2023-08-30 05:24:44,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 352 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:44,585 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 216 flow [2023-08-30 05:24:44,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-08-30 05:24:44,587 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-08-30 05:24:44,587 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 216 flow [2023-08-30 05:24:44,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 184.8) internal successors, (924), 5 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:44,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:44,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:24:44,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:44,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:44,589 INFO L85 PathProgramCache]: Analyzing trace with hash -39738501, now seen corresponding path program 2 times [2023-08-30 05:24:44,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:44,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597783464] [2023-08-30 05:24:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:44,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:44,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597783464] [2023-08-30 05:24:44,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597783464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:44,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:44,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:24:44,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743173666] [2023-08-30 05:24:44,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:44,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:24:44,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:44,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:24:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:24:44,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 438 [2023-08-30 05:24:44,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 185.8) internal successors, (929), 5 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:44,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 438 [2023-08-30 05:24:44,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:44,797 INFO L130 PetriNetUnfolder]: 109/204 cut-off events. [2023-08-30 05:24:44,798 INFO L131 PetriNetUnfolder]: For 506/506 co-relation queries the response was YES. [2023-08-30 05:24:44,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 204 events. 109/204 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 658 event pairs, 40 based on Foata normal form. 4/208 useless extension candidates. Maximal degree in co-relation 848. Up to 130 conditions per place. [2023-08-30 05:24:44,800 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 36 selfloop transitions, 8 changer transitions 7/51 dead transitions. [2023-08-30 05:24:44,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 421 flow [2023-08-30 05:24:44,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 952 transitions. [2023-08-30 05:24:44,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434703196347032 [2023-08-30 05:24:44,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 952 transitions. [2023-08-30 05:24:44,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 952 transitions. [2023-08-30 05:24:44,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:44,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 952 transitions. [2023-08-30 05:24:44,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.4) internal successors, (952), 5 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,810 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,810 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 216 flow. Second operand 5 states and 952 transitions. [2023-08-30 05:24:44,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 421 flow [2023-08-30 05:24:44,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 385 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-30 05:24:44,815 INFO L231 Difference]: Finished difference. Result has 49 places, 30 transitions, 229 flow [2023-08-30 05:24:44,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=49, PETRI_TRANSITIONS=30} [2023-08-30 05:24:44,817 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2023-08-30 05:24:44,817 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 30 transitions, 229 flow [2023-08-30 05:24:44,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.8) internal successors, (929), 5 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:44,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:44,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:24:44,819 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:44,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:44,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1069729318, now seen corresponding path program 2 times [2023-08-30 05:24:44,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:44,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924288226] [2023-08-30 05:24:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:44,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:44,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:44,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924288226] [2023-08-30 05:24:44,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924288226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:44,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157820253] [2023-08-30 05:24:44,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:24:44,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:44,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:44,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:44,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 05:24:44,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:24:44,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:44,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 05:24:44,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:45,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:45,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157820253] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:45,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:45,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 05:24:45,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732784194] [2023-08-30 05:24:45,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:45,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:24:45,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:24:45,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:24:45,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:45,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 30 transitions, 229 flow. Second operand has 10 states, 10 states have (on average 183.5) internal successors, (1835), 10 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:45,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:45,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:45,234 INFO L130 PetriNetUnfolder]: 124/235 cut-off events. [2023-08-30 05:24:45,234 INFO L131 PetriNetUnfolder]: For 624/624 co-relation queries the response was YES. [2023-08-30 05:24:45,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 235 events. 124/235 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 807 event pairs, 16 based on Foata normal form. 6/241 useless extension candidates. Maximal degree in co-relation 960. Up to 104 conditions per place. [2023-08-30 05:24:45,236 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 54 selfloop transitions, 15 changer transitions 2/71 dead transitions. [2023-08-30 05:24:45,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 557 flow [2023-08-30 05:24:45,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:24:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:24:45,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1509 transitions. [2023-08-30 05:24:45,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4306506849315068 [2023-08-30 05:24:45,241 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1509 transitions. [2023-08-30 05:24:45,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1509 transitions. [2023-08-30 05:24:45,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:45,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1509 transitions. [2023-08-30 05:24:45,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 188.625) internal successors, (1509), 8 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 438.0) internal successors, (3942), 9 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,250 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 438.0) internal successors, (3942), 9 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,250 INFO L175 Difference]: Start difference. First operand has 49 places, 30 transitions, 229 flow. Second operand 8 states and 1509 transitions. [2023-08-30 05:24:45,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 557 flow [2023-08-30 05:24:45,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 533 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 05:24:45,254 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 313 flow [2023-08-30 05:24:45,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=313, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2023-08-30 05:24:45,255 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-08-30 05:24:45,255 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 313 flow [2023-08-30 05:24:45,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 183.5) internal successors, (1835), 10 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:45,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:45,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:45,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 05:24:45,463 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:45,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1574503695, now seen corresponding path program 3 times [2023-08-30 05:24:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:45,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773964484] [2023-08-30 05:24:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:45,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:45,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773964484] [2023-08-30 05:24:45,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773964484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481939916] [2023-08-30 05:24:45,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:24:45,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:45,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:45,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:45,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 05:24:45,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:24:45,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:45,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 05:24:45,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:45,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:45,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481939916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:45,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:45,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-30 05:24:45,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615213833] [2023-08-30 05:24:45,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:45,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:24:45,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:24:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:24:45,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:45,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 313 flow. Second operand has 8 states, 8 states have (on average 183.625) internal successors, (1469), 8 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:45,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:45,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:45,792 INFO L130 PetriNetUnfolder]: 130/245 cut-off events. [2023-08-30 05:24:45,792 INFO L131 PetriNetUnfolder]: For 852/852 co-relation queries the response was YES. [2023-08-30 05:24:45,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 245 events. 130/245 cut-off events. For 852/852 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 839 event pairs, 16 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 1096. Up to 104 conditions per place. [2023-08-30 05:24:45,795 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 40 selfloop transitions, 13 changer transitions 1/54 dead transitions. [2023-08-30 05:24:45,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 518 flow [2023-08-30 05:24:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 941 transitions. [2023-08-30 05:24:45,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42968036529680365 [2023-08-30 05:24:45,798 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 941 transitions. [2023-08-30 05:24:45,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 941 transitions. [2023-08-30 05:24:45,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:45,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 941 transitions. [2023-08-30 05:24:45,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.2) internal successors, (941), 5 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,817 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 313 flow. Second operand 5 states and 941 transitions. [2023-08-30 05:24:45,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 518 flow [2023-08-30 05:24:45,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 495 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 05:24:45,822 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 356 flow [2023-08-30 05:24:45,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2023-08-30 05:24:45,824 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2023-08-30 05:24:45,824 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 356 flow [2023-08-30 05:24:45,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 183.625) internal successors, (1469), 8 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:45,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:45,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:45,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:46,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:46,033 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:46,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:46,034 INFO L85 PathProgramCache]: Analyzing trace with hash -97791812, now seen corresponding path program 3 times [2023-08-30 05:24:46,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:46,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870078479] [2023-08-30 05:24:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:46,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:46,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:46,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870078479] [2023-08-30 05:24:46,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870078479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:46,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:46,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:24:46,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384105604] [2023-08-30 05:24:46,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:46,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:24:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:24:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:24:46,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 438 [2023-08-30 05:24:46,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 356 flow. Second operand has 5 states, 5 states have (on average 184.8) internal successors, (924), 5 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:46,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 438 [2023-08-30 05:24:46,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:46,224 INFO L130 PetriNetUnfolder]: 122/229 cut-off events. [2023-08-30 05:24:46,224 INFO L131 PetriNetUnfolder]: For 1046/1046 co-relation queries the response was YES. [2023-08-30 05:24:46,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 229 events. 122/229 cut-off events. For 1046/1046 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 766 event pairs, 40 based on Foata normal form. 6/235 useless extension candidates. Maximal degree in co-relation 1038. Up to 160 conditions per place. [2023-08-30 05:24:46,226 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 36 selfloop transitions, 11 changer transitions 9/56 dead transitions. [2023-08-30 05:24:46,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 524 flow [2023-08-30 05:24:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:24:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:24:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2023-08-30 05:24:46,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2023-08-30 05:24:46,230 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1134 transitions. [2023-08-30 05:24:46,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1134 transitions. [2023-08-30 05:24:46,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:46,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1134 transitions. [2023-08-30 05:24:46,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,236 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,236 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 356 flow. Second operand 6 states and 1134 transitions. [2023-08-30 05:24:46,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 524 flow [2023-08-30 05:24:46,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 507 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 05:24:46,241 INFO L231 Difference]: Finished difference. Result has 62 places, 34 transitions, 308 flow [2023-08-30 05:24:46,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=62, PETRI_TRANSITIONS=34} [2023-08-30 05:24:46,242 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2023-08-30 05:24:46,243 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 34 transitions, 308 flow [2023-08-30 05:24:46,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 184.8) internal successors, (924), 5 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:46,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:46,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 05:24:46,244 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:46,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:46,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1147575501, now seen corresponding path program 4 times [2023-08-30 05:24:46,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:46,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025435279] [2023-08-30 05:24:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:46,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:46,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:46,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025435279] [2023-08-30 05:24:46,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025435279] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:46,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326532093] [2023-08-30 05:24:46,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:24:46,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:46,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:46,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:46,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 05:24:46,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:24:46,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:46,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 05:24:46,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:46,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:46,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:46,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326532093] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:46,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:46,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 05:24:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532461932] [2023-08-30 05:24:46,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:46,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:24:46,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:46,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:24:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:24:46,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:46,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 34 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 183.3) internal successors, (1833), 10 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:46,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:46,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:46,605 INFO L130 PetriNetUnfolder]: 122/219 cut-off events. [2023-08-30 05:24:46,605 INFO L131 PetriNetUnfolder]: For 880/880 co-relation queries the response was YES. [2023-08-30 05:24:46,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 219 events. 122/219 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 675 event pairs, 43 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 1009. Up to 161 conditions per place. [2023-08-30 05:24:46,607 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 37 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2023-08-30 05:24:46,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 48 transitions, 462 flow [2023-08-30 05:24:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 940 transitions. [2023-08-30 05:24:46,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2023-08-30 05:24:46,610 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 940 transitions. [2023-08-30 05:24:46,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 940 transitions. [2023-08-30 05:24:46,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:46,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 940 transitions. [2023-08-30 05:24:46,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,616 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,616 INFO L175 Difference]: Start difference. First operand has 62 places, 34 transitions, 308 flow. Second operand 5 states and 940 transitions. [2023-08-30 05:24:46,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 48 transitions, 462 flow [2023-08-30 05:24:46,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 413 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 05:24:46,620 INFO L231 Difference]: Finished difference. Result has 57 places, 35 transitions, 298 flow [2023-08-30 05:24:46,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=57, PETRI_TRANSITIONS=35} [2023-08-30 05:24:46,620 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-08-30 05:24:46,620 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 35 transitions, 298 flow [2023-08-30 05:24:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 183.3) internal successors, (1833), 10 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:46,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:46,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:46,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:46,826 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:46,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash 279076464, now seen corresponding path program 4 times [2023-08-30 05:24:46,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:46,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319526134] [2023-08-30 05:24:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:46,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:46,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:46,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319526134] [2023-08-30 05:24:46,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319526134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:46,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897019833] [2023-08-30 05:24:46,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:24:46,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:46,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:46,882 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:46,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 05:24:46,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:24:46,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:46,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 05:24:46,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:47,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897019833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:47,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 05:24:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203990083] [2023-08-30 05:24:47,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:47,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:24:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:24:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:24:47,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:47,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 35 transitions, 298 flow. Second operand has 10 states, 10 states have (on average 183.4) internal successors, (1834), 10 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:47,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:47,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:47,162 INFO L130 PetriNetUnfolder]: 114/203 cut-off events. [2023-08-30 05:24:47,162 INFO L131 PetriNetUnfolder]: For 676/676 co-relation queries the response was YES. [2023-08-30 05:24:47,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 203 events. 114/203 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 587 event pairs, 37 based on Foata normal form. 6/209 useless extension candidates. Maximal degree in co-relation 924. Up to 153 conditions per place. [2023-08-30 05:24:47,164 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 33 selfloop transitions, 12 changer transitions 0/45 dead transitions. [2023-08-30 05:24:47,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 421 flow [2023-08-30 05:24:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:47,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 937 transitions. [2023-08-30 05:24:47,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4278538812785388 [2023-08-30 05:24:47,167 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 937 transitions. [2023-08-30 05:24:47,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 937 transitions. [2023-08-30 05:24:47,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:47,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 937 transitions. [2023-08-30 05:24:47,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,181 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,181 INFO L175 Difference]: Start difference. First operand has 57 places, 35 transitions, 298 flow. Second operand 5 states and 937 transitions. [2023-08-30 05:24:47,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 421 flow [2023-08-30 05:24:47,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 405 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 05:24:47,185 INFO L231 Difference]: Finished difference. Result has 58 places, 34 transitions, 295 flow [2023-08-30 05:24:47,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=295, PETRI_PLACES=58, PETRI_TRANSITIONS=34} [2023-08-30 05:24:47,186 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-08-30 05:24:47,186 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 295 flow [2023-08-30 05:24:47,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 183.4) internal successors, (1834), 10 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:47,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:47,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:47,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 05:24:47,393 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:47,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:47,394 INFO L85 PathProgramCache]: Analyzing trace with hash 24975495, now seen corresponding path program 5 times [2023-08-30 05:24:47,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:47,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890404682] [2023-08-30 05:24:47,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:47,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:47,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:47,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890404682] [2023-08-30 05:24:47,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890404682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:47,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90470142] [2023-08-30 05:24:47,465 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:24:47,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:47,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:47,466 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:47,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 05:24:47,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:24:47,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:47,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 05:24:47,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:47,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:47,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90470142] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:47,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:47,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 05:24:47,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936923504] [2023-08-30 05:24:47,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:47,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:24:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:24:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:24:47,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:47,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 34 transitions, 295 flow. Second operand has 10 states, 10 states have (on average 183.5) internal successors, (1835), 10 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:47,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:47,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:47,785 INFO L130 PetriNetUnfolder]: 110/193 cut-off events. [2023-08-30 05:24:47,786 INFO L131 PetriNetUnfolder]: For 641/641 co-relation queries the response was YES. [2023-08-30 05:24:47,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 193 events. 110/193 cut-off events. For 641/641 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 566 event pairs, 9 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 906. Up to 86 conditions per place. [2023-08-30 05:24:47,788 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 37 selfloop transitions, 17 changer transitions 0/54 dead transitions. [2023-08-30 05:24:47,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 54 transitions, 488 flow [2023-08-30 05:24:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:24:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:24:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1492 transitions. [2023-08-30 05:24:47,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2023-08-30 05:24:47,792 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1492 transitions. [2023-08-30 05:24:47,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1492 transitions. [2023-08-30 05:24:47,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:47,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1492 transitions. [2023-08-30 05:24:47,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 438.0) internal successors, (3942), 9 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,800 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 438.0) internal successors, (3942), 9 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,800 INFO L175 Difference]: Start difference. First operand has 58 places, 34 transitions, 295 flow. Second operand 8 states and 1492 transitions. [2023-08-30 05:24:47,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 54 transitions, 488 flow [2023-08-30 05:24:47,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 440 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 05:24:47,804 INFO L231 Difference]: Finished difference. Result has 57 places, 35 transitions, 291 flow [2023-08-30 05:24:47,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=291, PETRI_PLACES=57, PETRI_TRANSITIONS=35} [2023-08-30 05:24:47,804 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-08-30 05:24:47,804 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 35 transitions, 291 flow [2023-08-30 05:24:47,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 183.5) internal successors, (1835), 10 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:47,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:47,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:48,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 05:24:48,011 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:48,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:48,011 INFO L85 PathProgramCache]: Analyzing trace with hash 832856233, now seen corresponding path program 1 times [2023-08-30 05:24:48,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:48,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120929713] [2023-08-30 05:24:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:48,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:48,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:48,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120929713] [2023-08-30 05:24:48,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120929713] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:48,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935372325] [2023-08-30 05:24:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:48,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:48,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:48,373 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:48,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 05:24:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:48,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 05:24:48,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:48,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:48,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935372325] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:48,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 05:24:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985984109] [2023-08-30 05:24:48,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:24:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:24:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:24:49,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:24:49,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 35 transitions, 291 flow. Second operand has 12 states, 12 states have (on average 175.33333333333334) internal successors, (2104), 12 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:49,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:49,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:24:49,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:49,209 INFO L130 PetriNetUnfolder]: 133/239 cut-off events. [2023-08-30 05:24:49,209 INFO L131 PetriNetUnfolder]: For 636/660 co-relation queries the response was YES. [2023-08-30 05:24:49,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 239 events. 133/239 cut-off events. For 636/660 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 815 event pairs, 6 based on Foata normal form. 11/244 useless extension candidates. Maximal degree in co-relation 1060. Up to 168 conditions per place. [2023-08-30 05:24:49,211 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 36 selfloop transitions, 17 changer transitions 5/64 dead transitions. [2023-08-30 05:24:49,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 533 flow [2023-08-30 05:24:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:24:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:24:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1251 transitions. [2023-08-30 05:24:49,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080234833659491 [2023-08-30 05:24:49,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1251 transitions. [2023-08-30 05:24:49,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1251 transitions. [2023-08-30 05:24:49,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:49,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1251 transitions. [2023-08-30 05:24:49,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.71428571428572) internal successors, (1251), 7 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:49,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:49,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:49,231 INFO L175 Difference]: Start difference. First operand has 57 places, 35 transitions, 291 flow. Second operand 7 states and 1251 transitions. [2023-08-30 05:24:49,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 533 flow [2023-08-30 05:24:49,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 482 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 05:24:49,235 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 382 flow [2023-08-30 05:24:49,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2023-08-30 05:24:49,236 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2023-08-30 05:24:49,236 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 382 flow [2023-08-30 05:24:49,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.33333333333334) internal successors, (2104), 12 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:49,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:49,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:49,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:49,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:49,443 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:49,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:49,443 INFO L85 PathProgramCache]: Analyzing trace with hash 734698065, now seen corresponding path program 2 times [2023-08-30 05:24:49,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:49,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563206143] [2023-08-30 05:24:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:49,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:49,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:49,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563206143] [2023-08-30 05:24:49,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563206143] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:49,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560941451] [2023-08-30 05:24:49,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:24:49,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:49,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:49,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:49,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 05:24:49,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:24:49,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:49,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 05:24:49,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:49,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:50,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560941451] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:50,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:50,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 05:24:50,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515515516] [2023-08-30 05:24:50,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:50,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:24:50,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:50,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:24:50,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:24:50,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:24:50,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 382 flow. Second operand has 14 states, 14 states have (on average 175.42857142857142) internal successors, (2456), 14 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:50,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:50,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:24:50,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:50,508 INFO L130 PetriNetUnfolder]: 145/265 cut-off events. [2023-08-30 05:24:50,508 INFO L131 PetriNetUnfolder]: For 878/914 co-relation queries the response was YES. [2023-08-30 05:24:50,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 265 events. 145/265 cut-off events. For 878/914 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 960 event pairs, 8 based on Foata normal form. 11/270 useless extension candidates. Maximal degree in co-relation 1250. Up to 172 conditions per place. [2023-08-30 05:24:50,510 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 40 selfloop transitions, 20 changer transitions 5/71 dead transitions. [2023-08-30 05:24:50,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 616 flow [2023-08-30 05:24:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:24:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:24:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1256 transitions. [2023-08-30 05:24:50,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096542726679713 [2023-08-30 05:24:50,514 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1256 transitions. [2023-08-30 05:24:50,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1256 transitions. [2023-08-30 05:24:50,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:50,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1256 transitions. [2023-08-30 05:24:50,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:50,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:50,522 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:50,522 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 382 flow. Second operand 7 states and 1256 transitions. [2023-08-30 05:24:50,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 616 flow [2023-08-30 05:24:50,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 583 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-30 05:24:50,527 INFO L231 Difference]: Finished difference. Result has 66 places, 49 transitions, 451 flow [2023-08-30 05:24:50,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=451, PETRI_PLACES=66, PETRI_TRANSITIONS=49} [2023-08-30 05:24:50,528 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2023-08-30 05:24:50,528 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 49 transitions, 451 flow [2023-08-30 05:24:50,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 175.42857142857142) internal successors, (2456), 14 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:50,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:50,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:50,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:50,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 05:24:50,734 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:50,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:50,735 INFO L85 PathProgramCache]: Analyzing trace with hash 762403695, now seen corresponding path program 3 times [2023-08-30 05:24:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:50,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760501149] [2023-08-30 05:24:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:50,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:50,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760501149] [2023-08-30 05:24:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760501149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483575722] [2023-08-30 05:24:50,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:24:50,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:50,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:50,961 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:50,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 05:24:51,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:24:51,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:51,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 05:24:51,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:51,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:51,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483575722] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:51,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:51,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 05:24:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768352683] [2023-08-30 05:24:51,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:51,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:24:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:51,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:24:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:24:51,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:24:51,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 451 flow. Second operand has 12 states, 12 states have (on average 175.66666666666666) internal successors, (2108), 12 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:51,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:51,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:24:51,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:51,679 INFO L130 PetriNetUnfolder]: 142/256 cut-off events. [2023-08-30 05:24:51,679 INFO L131 PetriNetUnfolder]: For 1249/1277 co-relation queries the response was YES. [2023-08-30 05:24:51,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 256 events. 142/256 cut-off events. For 1249/1277 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 912 event pairs, 8 based on Foata normal form. 9/259 useless extension candidates. Maximal degree in co-relation 1297. Up to 172 conditions per place. [2023-08-30 05:24:51,682 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 36 selfloop transitions, 21 changer transitions 5/68 dead transitions. [2023-08-30 05:24:51,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 648 flow [2023-08-30 05:24:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:24:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:24:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1252 transitions. [2023-08-30 05:24:51,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40834964122635353 [2023-08-30 05:24:51,686 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1252 transitions. [2023-08-30 05:24:51,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1252 transitions. [2023-08-30 05:24:51,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:51,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1252 transitions. [2023-08-30 05:24:51,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:51,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:51,693 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:51,694 INFO L175 Difference]: Start difference. First operand has 66 places, 49 transitions, 451 flow. Second operand 7 states and 1252 transitions. [2023-08-30 05:24:51,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 648 flow [2023-08-30 05:24:51,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 579 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-08-30 05:24:51,699 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 472 flow [2023-08-30 05:24:51,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=472, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-30 05:24:51,699 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2023-08-30 05:24:51,699 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 472 flow [2023-08-30 05:24:51,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.66666666666666) internal successors, (2108), 12 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:51,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:51,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:51,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:51,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:51,906 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:51,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash -625469757, now seen corresponding path program 4 times [2023-08-30 05:24:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:51,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331322027] [2023-08-30 05:24:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:52,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331322027] [2023-08-30 05:24:52,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331322027] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186097874] [2023-08-30 05:24:52,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:24:52,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:52,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:52,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:52,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 05:24:52,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:24:52,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:52,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 05:24:52,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:52,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:52,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186097874] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:52,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:52,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-30 05:24:52,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133133929] [2023-08-30 05:24:52,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:52,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 05:24:52,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:52,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 05:24:52,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:24:52,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:24:52,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 472 flow. Second operand has 11 states, 11 states have (on average 175.8181818181818) internal successors, (1934), 11 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:52,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:52,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:24:52,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:52,801 INFO L130 PetriNetUnfolder]: 166/298 cut-off events. [2023-08-30 05:24:52,801 INFO L131 PetriNetUnfolder]: For 1490/1518 co-relation queries the response was YES. [2023-08-30 05:24:52,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 298 events. 166/298 cut-off events. For 1490/1518 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1121 event pairs, 10 based on Foata normal form. 9/301 useless extension candidates. Maximal degree in co-relation 1533. Up to 244 conditions per place. [2023-08-30 05:24:52,804 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 44 selfloop transitions, 17 changer transitions 5/72 dead transitions. [2023-08-30 05:24:52,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 726 flow [2023-08-30 05:24:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:24:52,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:24:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1243 transitions. [2023-08-30 05:24:52,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40541422048271364 [2023-08-30 05:24:52,808 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1243 transitions. [2023-08-30 05:24:52,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1243 transitions. [2023-08-30 05:24:52,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:52,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1243 transitions. [2023-08-30 05:24:52,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.57142857142858) internal successors, (1243), 7 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:52,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:52,815 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:52,815 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 472 flow. Second operand 7 states and 1243 transitions. [2023-08-30 05:24:52,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 726 flow [2023-08-30 05:24:52,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 72 transitions, 679 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 05:24:52,820 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 579 flow [2023-08-30 05:24:52,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=579, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2023-08-30 05:24:52,821 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2023-08-30 05:24:52,821 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 579 flow [2023-08-30 05:24:52,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 175.8181818181818) internal successors, (1934), 11 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:52,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:52,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:52,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:53,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:53,032 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:53,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2034948761, now seen corresponding path program 5 times [2023-08-30 05:24:53,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:53,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830346967] [2023-08-30 05:24:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:53,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830346967] [2023-08-30 05:24:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830346967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258163663] [2023-08-30 05:24:53,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:24:53,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:53,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:53,305 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:53,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 05:24:53,413 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:24:53,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:53,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 05:24:53,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:53,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:53,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258163663] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:53,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:53,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 05:24:53,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968506749] [2023-08-30 05:24:53,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:53,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:24:53,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:53,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:24:53,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:24:53,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:24:53,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 579 flow. Second operand has 14 states, 14 states have (on average 175.42857142857142) internal successors, (2456), 14 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:53,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:53,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:24:53,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:54,062 INFO L130 PetriNetUnfolder]: 180/326 cut-off events. [2023-08-30 05:24:54,063 INFO L131 PetriNetUnfolder]: For 1760/1788 co-relation queries the response was YES. [2023-08-30 05:24:54,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 326 events. 180/326 cut-off events. For 1760/1788 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1255 event pairs, 10 based on Foata normal form. 9/329 useless extension candidates. Maximal degree in co-relation 1750. Up to 248 conditions per place. [2023-08-30 05:24:54,066 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 50 selfloop transitions, 20 changer transitions 5/81 dead transitions. [2023-08-30 05:24:54,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 838 flow [2023-08-30 05:24:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:24:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:24:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1250 transitions. [2023-08-30 05:24:54,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40769732550554466 [2023-08-30 05:24:54,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1250 transitions. [2023-08-30 05:24:54,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1250 transitions. [2023-08-30 05:24:54,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:54,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1250 transitions. [2023-08-30 05:24:54,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:54,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:54,076 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:54,076 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 579 flow. Second operand 7 states and 1250 transitions. [2023-08-30 05:24:54,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 838 flow [2023-08-30 05:24:54,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 801 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-30 05:24:54,082 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 656 flow [2023-08-30 05:24:54,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=656, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2023-08-30 05:24:54,083 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2023-08-30 05:24:54,083 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 656 flow [2023-08-30 05:24:54,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 175.42857142857142) internal successors, (2456), 14 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:54,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:54,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:54,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:54,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 05:24:54,296 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:54,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash -634984093, now seen corresponding path program 6 times [2023-08-30 05:24:54,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:54,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349055411] [2023-08-30 05:24:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:54,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:54,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349055411] [2023-08-30 05:24:54,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349055411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358199482] [2023-08-30 05:24:54,584 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:24:54,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:54,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:54,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:54,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 05:24:54,674 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 05:24:54,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:54,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 05:24:54,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:54,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:54,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358199482] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:54,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:54,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 05:24:54,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132749026] [2023-08-30 05:24:54,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:54,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:24:54,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:54,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:24:54,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:24:55,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:24:55,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 656 flow. Second operand has 13 states, 13 states have (on average 175.23076923076923) internal successors, (2278), 13 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:55,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:55,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:24:55,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:55,287 INFO L130 PetriNetUnfolder]: 177/317 cut-off events. [2023-08-30 05:24:55,287 INFO L131 PetriNetUnfolder]: For 2082/2110 co-relation queries the response was YES. [2023-08-30 05:24:55,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1813 conditions, 317 events. 177/317 cut-off events. For 2082/2110 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1215 event pairs, 10 based on Foata normal form. 9/320 useless extension candidates. Maximal degree in co-relation 1781. Up to 248 conditions per place. [2023-08-30 05:24:55,291 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 48 selfloop transitions, 21 changer transitions 5/80 dead transitions. [2023-08-30 05:24:55,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 879 flow [2023-08-30 05:24:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:24:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:24:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1248 transitions. [2023-08-30 05:24:55,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4070450097847358 [2023-08-30 05:24:55,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1248 transitions. [2023-08-30 05:24:55,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1248 transitions. [2023-08-30 05:24:55,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:55,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1248 transitions. [2023-08-30 05:24:55,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.28571428571428) internal successors, (1248), 7 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:55,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:55,304 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:55,304 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 656 flow. Second operand 7 states and 1248 transitions. [2023-08-30 05:24:55,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 879 flow [2023-08-30 05:24:55,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 801 flow, removed 30 selfloop flow, removed 3 redundant places. [2023-08-30 05:24:55,314 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 678 flow [2023-08-30 05:24:55,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=678, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2023-08-30 05:24:55,315 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-08-30 05:24:55,315 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 678 flow [2023-08-30 05:24:55,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 175.23076923076923) internal successors, (2278), 13 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:55,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:55,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:55,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:55,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 05:24:55,522 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:55,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:55,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1081669548, now seen corresponding path program 7 times [2023-08-30 05:24:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259424203] [2023-08-30 05:24:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:55,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:55,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259424203] [2023-08-30 05:24:55,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259424203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:55,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709984336] [2023-08-30 05:24:55,605 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:24:55,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:55,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:55,607 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:55,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 05:24:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:55,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:24:55,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:55,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:55,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709984336] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:55,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:55,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-30 05:24:55,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636023275] [2023-08-30 05:24:55,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:24:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:24:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:24:55,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:55,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 678 flow. Second operand has 13 states, 13 states have (on average 183.07692307692307) internal successors, (2380), 13 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:55,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:55,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:55,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:56,175 INFO L130 PetriNetUnfolder]: 265/498 cut-off events. [2023-08-30 05:24:56,175 INFO L131 PetriNetUnfolder]: For 3070/3070 co-relation queries the response was YES. [2023-08-30 05:24:56,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2726 conditions, 498 events. 265/498 cut-off events. For 3070/3070 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2181 event pairs, 33 based on Foata normal form. 8/506 useless extension candidates. Maximal degree in co-relation 2691. Up to 157 conditions per place. [2023-08-30 05:24:56,180 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 98 selfloop transitions, 64 changer transitions 6/168 dead transitions. [2023-08-30 05:24:56,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 168 transitions, 1703 flow [2023-08-30 05:24:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 05:24:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 05:24:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3362 transitions. [2023-08-30 05:24:56,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42643328259766616 [2023-08-30 05:24:56,185 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3362 transitions. [2023-08-30 05:24:56,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3362 transitions. [2023-08-30 05:24:56,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:56,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3362 transitions. [2023-08-30 05:24:56,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 186.77777777777777) internal successors, (3362), 18 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:56,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:56,200 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:56,200 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 678 flow. Second operand 18 states and 3362 transitions. [2023-08-30 05:24:56,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 168 transitions, 1703 flow [2023-08-30 05:24:56,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 168 transitions, 1600 flow, removed 33 selfloop flow, removed 4 redundant places. [2023-08-30 05:24:56,213 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 1184 flow [2023-08-30 05:24:56,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1184, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2023-08-30 05:24:56,214 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2023-08-30 05:24:56,214 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 1184 flow [2023-08-30 05:24:56,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.07692307692307) internal successors, (2380), 13 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:56,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:56,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:56,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:56,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 05:24:56,422 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:56,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash -626005490, now seen corresponding path program 8 times [2023-08-30 05:24:56,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042702696] [2023-08-30 05:24:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:56,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:56,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042702696] [2023-08-30 05:24:56,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042702696] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:56,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788862463] [2023-08-30 05:24:56,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:24:56,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:56,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:56,494 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:56,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 05:24:56,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:24:56,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:56,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:24:56,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:56,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788862463] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:56,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-30 05:24:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056599191] [2023-08-30 05:24:56,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:56,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 05:24:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 05:24:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:24:56,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:56,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 1184 flow. Second operand has 11 states, 11 states have (on average 183.0909090909091) internal successors, (2014), 11 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:56,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:56,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:56,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:56,889 INFO L130 PetriNetUnfolder]: 246/457 cut-off events. [2023-08-30 05:24:56,889 INFO L131 PetriNetUnfolder]: For 3440/3440 co-relation queries the response was YES. [2023-08-30 05:24:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 457 events. 246/457 cut-off events. For 3440/3440 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1912 event pairs, 33 based on Foata normal form. 4/461 useless extension candidates. Maximal degree in co-relation 2750. Up to 133 conditions per place. [2023-08-30 05:24:56,894 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 65 selfloop transitions, 61 changer transitions 10/136 dead transitions. [2023-08-30 05:24:56,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 136 transitions, 1658 flow [2023-08-30 05:24:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:24:56,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:24:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2053 transitions. [2023-08-30 05:24:56,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261104192611042 [2023-08-30 05:24:56,898 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2053 transitions. [2023-08-30 05:24:56,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2053 transitions. [2023-08-30 05:24:56,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:56,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2053 transitions. [2023-08-30 05:24:56,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 186.63636363636363) internal successors, (2053), 11 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:56,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:56,906 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:56,906 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 1184 flow. Second operand 11 states and 2053 transitions. [2023-08-30 05:24:56,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 136 transitions, 1658 flow [2023-08-30 05:24:56,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 136 transitions, 1496 flow, removed 58 selfloop flow, removed 4 redundant places. [2023-08-30 05:24:56,924 INFO L231 Difference]: Finished difference. Result has 112 places, 102 transitions, 1246 flow [2023-08-30 05:24:56,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1246, PETRI_PLACES=112, PETRI_TRANSITIONS=102} [2023-08-30 05:24:56,924 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2023-08-30 05:24:56,924 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 102 transitions, 1246 flow [2023-08-30 05:24:56,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 183.0909090909091) internal successors, (2014), 11 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:56,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:56,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:56,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:57,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:57,131 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:57,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:57,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1364339437, now seen corresponding path program 9 times [2023-08-30 05:24:57,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:57,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22992289] [2023-08-30 05:24:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:57,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:57,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:57,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22992289] [2023-08-30 05:24:57,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22992289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:57,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482238572] [2023-08-30 05:24:57,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:24:57,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:57,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:57,213 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:57,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 05:24:57,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:24:57,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:57,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:24:57,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:57,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:57,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482238572] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:57,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:57,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-30 05:24:57,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713360268] [2023-08-30 05:24:57,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:57,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 05:24:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 05:24:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:24:57,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:57,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 102 transitions, 1246 flow. Second operand has 11 states, 11 states have (on average 183.27272727272728) internal successors, (2016), 11 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:57,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:57,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:57,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:57,649 INFO L130 PetriNetUnfolder]: 256/471 cut-off events. [2023-08-30 05:24:57,649 INFO L131 PetriNetUnfolder]: For 3477/3477 co-relation queries the response was YES. [2023-08-30 05:24:57,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 471 events. 256/471 cut-off events. For 3477/3477 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1971 event pairs, 21 based on Foata normal form. 6/477 useless extension candidates. Maximal degree in co-relation 2886. Up to 200 conditions per place. [2023-08-30 05:24:57,654 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 91 selfloop transitions, 41 changer transitions 0/132 dead transitions. [2023-08-30 05:24:57,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 132 transitions, 1724 flow [2023-08-30 05:24:57,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:24:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:24:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1320 transitions. [2023-08-30 05:24:57,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43052837573385516 [2023-08-30 05:24:57,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1320 transitions. [2023-08-30 05:24:57,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1320 transitions. [2023-08-30 05:24:57,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:57,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1320 transitions. [2023-08-30 05:24:57,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:57,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:57,662 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:57,662 INFO L175 Difference]: Start difference. First operand has 112 places, 102 transitions, 1246 flow. Second operand 7 states and 1320 transitions. [2023-08-30 05:24:57,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 132 transitions, 1724 flow [2023-08-30 05:24:57,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 132 transitions, 1605 flow, removed 22 selfloop flow, removed 10 redundant places. [2023-08-30 05:24:57,679 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 1248 flow [2023-08-30 05:24:57,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1248, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2023-08-30 05:24:57,680 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2023-08-30 05:24:57,680 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 1248 flow [2023-08-30 05:24:57,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 183.27272727272728) internal successors, (2016), 11 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:57,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:57,681 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:57,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:57,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:57,886 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:57,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1862073491, now seen corresponding path program 10 times [2023-08-30 05:24:57,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:57,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985494224] [2023-08-30 05:24:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:57,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:57,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:57,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985494224] [2023-08-30 05:24:57,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985494224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:57,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989467157] [2023-08-30 05:24:57,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:24:57,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:57,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:57,958 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:57,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 05:24:58,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:24:58,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:58,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:24:58,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:58,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:58,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989467157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:58,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:58,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 05:24:58,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983931636] [2023-08-30 05:24:58,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:24:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:24:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:24:58,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:58,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 1248 flow. Second operand has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:58,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:58,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:58,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:58,600 INFO L130 PetriNetUnfolder]: 324/611 cut-off events. [2023-08-30 05:24:58,600 INFO L131 PetriNetUnfolder]: For 6147/6147 co-relation queries the response was YES. [2023-08-30 05:24:58,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3928 conditions, 611 events. 324/611 cut-off events. For 6147/6147 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2795 event pairs, 11 based on Foata normal form. 10/621 useless extension candidates. Maximal degree in co-relation 3888. Up to 187 conditions per place. [2023-08-30 05:24:58,607 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 118 selfloop transitions, 81 changer transitions 1/200 dead transitions. [2023-08-30 05:24:58,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 200 transitions, 2549 flow [2023-08-30 05:24:58,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 05:24:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 05:24:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3735 transitions. [2023-08-30 05:24:58,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263698630136986 [2023-08-30 05:24:58,613 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3735 transitions. [2023-08-30 05:24:58,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3735 transitions. [2023-08-30 05:24:58,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:58,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3735 transitions. [2023-08-30 05:24:58,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 186.75) internal successors, (3735), 20 states have internal predecessors, (3735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:58,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:58,628 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:58,628 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 1248 flow. Second operand 20 states and 3735 transitions. [2023-08-30 05:24:58,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 200 transitions, 2549 flow [2023-08-30 05:24:58,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 200 transitions, 2351 flow, removed 62 selfloop flow, removed 4 redundant places. [2023-08-30 05:24:58,650 INFO L231 Difference]: Finished difference. Result has 130 places, 145 transitions, 2008 flow [2023-08-30 05:24:58,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2008, PETRI_PLACES=130, PETRI_TRANSITIONS=145} [2023-08-30 05:24:58,651 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2023-08-30 05:24:58,651 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 145 transitions, 2008 flow [2023-08-30 05:24:58,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:58,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:58,652 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:58,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:58,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 05:24:58,857 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:58,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash 801128094, now seen corresponding path program 11 times [2023-08-30 05:24:58,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557295280] [2023-08-30 05:24:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:58,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:58,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557295280] [2023-08-30 05:24:58,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557295280] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:58,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198122728] [2023-08-30 05:24:58,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:24:58,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:58,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:58,927 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:58,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 05:24:59,023 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:24:59,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:59,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:24:59,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:59,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:59,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198122728] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:59,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:59,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 05:24:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695358263] [2023-08-30 05:24:59,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:59,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:24:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:24:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:24:59,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:24:59,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 145 transitions, 2008 flow. Second operand has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:59,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:59,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:24:59,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:59,496 INFO L130 PetriNetUnfolder]: 404/781 cut-off events. [2023-08-30 05:24:59,496 INFO L131 PetriNetUnfolder]: For 10078/10078 co-relation queries the response was YES. [2023-08-30 05:24:59,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5318 conditions, 781 events. 404/781 cut-off events. For 10078/10078 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3878 event pairs, 75 based on Foata normal form. 8/789 useless extension candidates. Maximal degree in co-relation 5272. Up to 331 conditions per place. [2023-08-30 05:24:59,505 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 163 selfloop transitions, 66 changer transitions 0/229 dead transitions. [2023-08-30 05:24:59,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 229 transitions, 3433 flow [2023-08-30 05:24:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 05:24:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 05:24:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2444 transitions. [2023-08-30 05:24:59,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2023-08-30 05:24:59,512 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2444 transitions. [2023-08-30 05:24:59,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2444 transitions. [2023-08-30 05:24:59,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:59,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2444 transitions. [2023-08-30 05:24:59,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 188.0) internal successors, (2444), 13 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:59,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 438.0) internal successors, (6132), 14 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:59,523 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 438.0) internal successors, (6132), 14 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:59,524 INFO L175 Difference]: Start difference. First operand has 130 places, 145 transitions, 2008 flow. Second operand 13 states and 2444 transitions. [2023-08-30 05:24:59,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 229 transitions, 3433 flow [2023-08-30 05:24:59,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 229 transitions, 2646 flow, removed 358 selfloop flow, removed 6 redundant places. [2023-08-30 05:24:59,572 INFO L231 Difference]: Finished difference. Result has 142 places, 164 transitions, 2018 flow [2023-08-30 05:24:59,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2018, PETRI_PLACES=142, PETRI_TRANSITIONS=164} [2023-08-30 05:24:59,572 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2023-08-30 05:24:59,573 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 164 transitions, 2018 flow [2023-08-30 05:24:59,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:59,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:59,573 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:59,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:59,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 05:24:59,778 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:24:59,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:59,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1824853525, now seen corresponding path program 12 times [2023-08-30 05:24:59,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:59,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077008364] [2023-08-30 05:24:59,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:59,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077008364] [2023-08-30 05:24:59,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077008364] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191762593] [2023-08-30 05:24:59,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:24:59,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:59,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:59,847 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:24:59,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 05:24:59,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 05:24:59,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:59,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:24:59,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:59,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191762593] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:00,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:00,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 05:25:00,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443849365] [2023-08-30 05:25:00,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:00,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:25:00,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:00,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:25:00,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:25:00,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:00,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 164 transitions, 2018 flow. Second operand has 12 states, 12 states have (on average 183.08333333333334) internal successors, (2197), 12 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:00,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:00,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:00,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:00,439 INFO L130 PetriNetUnfolder]: 400/771 cut-off events. [2023-08-30 05:25:00,439 INFO L131 PetriNetUnfolder]: For 6358/6358 co-relation queries the response was YES. [2023-08-30 05:25:00,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4606 conditions, 771 events. 400/771 cut-off events. For 6358/6358 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3850 event pairs, 27 based on Foata normal form. 34/803 useless extension candidates. Maximal degree in co-relation 4556. Up to 446 conditions per place. [2023-08-30 05:25:00,448 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 137 selfloop transitions, 69 changer transitions 0/206 dead transitions. [2023-08-30 05:25:00,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 206 transitions, 2682 flow [2023-08-30 05:25:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 05:25:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 05:25:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2622 transitions. [2023-08-30 05:25:00,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42759295499021527 [2023-08-30 05:25:00,453 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2622 transitions. [2023-08-30 05:25:00,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2622 transitions. [2023-08-30 05:25:00,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:00,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2622 transitions. [2023-08-30 05:25:00,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 187.28571428571428) internal successors, (2622), 14 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:00,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:00,462 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:00,463 INFO L175 Difference]: Start difference. First operand has 142 places, 164 transitions, 2018 flow. Second operand 14 states and 2622 transitions. [2023-08-30 05:25:00,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 206 transitions, 2682 flow [2023-08-30 05:25:00,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 206 transitions, 2535 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-08-30 05:25:00,499 INFO L231 Difference]: Finished difference. Result has 149 places, 163 transitions, 2072 flow [2023-08-30 05:25:00,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2072, PETRI_PLACES=149, PETRI_TRANSITIONS=163} [2023-08-30 05:25:00,504 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2023-08-30 05:25:00,504 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 163 transitions, 2072 flow [2023-08-30 05:25:00,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.08333333333334) internal successors, (2197), 12 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:00,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:00,505 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:00,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:00,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 05:25:00,710 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:00,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:00,710 INFO L85 PathProgramCache]: Analyzing trace with hash 810642430, now seen corresponding path program 13 times [2023-08-30 05:25:00,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:00,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393658948] [2023-08-30 05:25:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:00,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:00,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393658948] [2023-08-30 05:25:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393658948] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164529601] [2023-08-30 05:25:00,821 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:25:00,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:00,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:00,823 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:00,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 05:25:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:00,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:00,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:00,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164529601] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:00,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 05:25:00,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175981432] [2023-08-30 05:25:00,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:00,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:25:01,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:01,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:25:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:25:01,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:01,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 163 transitions, 2072 flow. Second operand has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:01,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:01,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:01,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:01,440 INFO L130 PetriNetUnfolder]: 389/754 cut-off events. [2023-08-30 05:25:01,440 INFO L131 PetriNetUnfolder]: For 6398/6398 co-relation queries the response was YES. [2023-08-30 05:25:01,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4568 conditions, 754 events. 389/754 cut-off events. For 6398/6398 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3742 event pairs, 56 based on Foata normal form. 16/768 useless extension candidates. Maximal degree in co-relation 4518. Up to 264 conditions per place. [2023-08-30 05:25:01,449 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 146 selfloop transitions, 79 changer transitions 2/227 dead transitions. [2023-08-30 05:25:01,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 227 transitions, 2922 flow [2023-08-30 05:25:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 05:25:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 05:25:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3361 transitions. [2023-08-30 05:25:01,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263064434297311 [2023-08-30 05:25:01,454 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3361 transitions. [2023-08-30 05:25:01,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3361 transitions. [2023-08-30 05:25:01,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:01,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3361 transitions. [2023-08-30 05:25:01,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 186.72222222222223) internal successors, (3361), 18 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:01,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:01,465 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:01,465 INFO L175 Difference]: Start difference. First operand has 149 places, 163 transitions, 2072 flow. Second operand 18 states and 3361 transitions. [2023-08-30 05:25:01,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 227 transitions, 2922 flow [2023-08-30 05:25:01,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 227 transitions, 2811 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-30 05:25:01,498 INFO L231 Difference]: Finished difference. Result has 159 places, 166 transitions, 2182 flow [2023-08-30 05:25:01,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2182, PETRI_PLACES=159, PETRI_TRANSITIONS=166} [2023-08-30 05:25:01,500 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2023-08-30 05:25:01,500 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 166 transitions, 2182 flow [2023-08-30 05:25:01,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:01,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:01,500 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:01,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:01,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 05:25:01,706 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:01,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash -59756659, now seen corresponding path program 14 times [2023-08-30 05:25:01,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:01,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917088037] [2023-08-30 05:25:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:01,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:01,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:01,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917088037] [2023-08-30 05:25:01,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917088037] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:01,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252467019] [2023-08-30 05:25:01,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:25:01,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:01,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:01,785 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:01,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 05:25:01,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:25:01,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:01,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:01,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:01,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:01,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252467019] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:01,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:01,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-30 05:25:01,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943483507] [2023-08-30 05:25:01,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:01,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:25:01,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:01,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:25:01,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:25:02,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:02,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 166 transitions, 2182 flow. Second operand has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:02,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:02,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:02,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:02,386 INFO L130 PetriNetUnfolder]: 564/1111 cut-off events. [2023-08-30 05:25:02,386 INFO L131 PetriNetUnfolder]: For 10671/10671 co-relation queries the response was YES. [2023-08-30 05:25:02,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6923 conditions, 1111 events. 564/1111 cut-off events. For 10671/10671 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6256 event pairs, 23 based on Foata normal form. 18/1127 useless extension candidates. Maximal degree in co-relation 6872. Up to 406 conditions per place. [2023-08-30 05:25:02,400 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 167 selfloop transitions, 120 changer transitions 0/287 dead transitions. [2023-08-30 05:25:02,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 287 transitions, 4061 flow [2023-08-30 05:25:02,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 05:25:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 05:25:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2817 transitions. [2023-08-30 05:25:02,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42876712328767125 [2023-08-30 05:25:02,406 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2817 transitions. [2023-08-30 05:25:02,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2817 transitions. [2023-08-30 05:25:02,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:02,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2817 transitions. [2023-08-30 05:25:02,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 187.8) internal successors, (2817), 15 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:02,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 438.0) internal successors, (7008), 16 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:02,416 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 438.0) internal successors, (7008), 16 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:02,416 INFO L175 Difference]: Start difference. First operand has 159 places, 166 transitions, 2182 flow. Second operand 15 states and 2817 transitions. [2023-08-30 05:25:02,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 287 transitions, 4061 flow [2023-08-30 05:25:02,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 287 transitions, 3806 flow, removed 82 selfloop flow, removed 11 redundant places. [2023-08-30 05:25:02,472 INFO L231 Difference]: Finished difference. Result has 167 places, 215 transitions, 3154 flow [2023-08-30 05:25:02,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3154, PETRI_PLACES=167, PETRI_TRANSITIONS=215} [2023-08-30 05:25:02,473 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2023-08-30 05:25:02,473 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 215 transitions, 3154 flow [2023-08-30 05:25:02,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:02,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:02,474 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:02,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:02,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:02,679 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:02,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash -50242323, now seen corresponding path program 15 times [2023-08-30 05:25:02,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:02,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30704761] [2023-08-30 05:25:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:02,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:02,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30704761] [2023-08-30 05:25:02,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30704761] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819274951] [2023-08-30 05:25:02,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:25:02,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:02,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:02,750 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:02,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 05:25:02,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:25:02,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:02,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:02,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:02,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:25:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819274951] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:02,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:02,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-30 05:25:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257918932] [2023-08-30 05:25:02,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:02,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:25:02,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:25:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:25:02,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:02,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 215 transitions, 3154 flow. Second operand has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:02,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:02,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:02,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:03,443 INFO L130 PetriNetUnfolder]: 566/1133 cut-off events. [2023-08-30 05:25:03,443 INFO L131 PetriNetUnfolder]: For 12600/12600 co-relation queries the response was YES. [2023-08-30 05:25:03,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 1133 events. 566/1133 cut-off events. For 12600/12600 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6491 event pairs, 23 based on Foata normal form. 6/1139 useless extension candidates. Maximal degree in co-relation 7360. Up to 342 conditions per place. [2023-08-30 05:25:03,454 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 155 selfloop transitions, 127 changer transitions 2/284 dead transitions. [2023-08-30 05:25:03,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 284 transitions, 4225 flow [2023-08-30 05:25:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 05:25:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 05:25:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3909 transitions. [2023-08-30 05:25:03,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249836921069798 [2023-08-30 05:25:03,463 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3909 transitions. [2023-08-30 05:25:03,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3909 transitions. [2023-08-30 05:25:03,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:03,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3909 transitions. [2023-08-30 05:25:03,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 186.14285714285714) internal successors, (3909), 21 states have internal predecessors, (3909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:03,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:03,478 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:03,478 INFO L175 Difference]: Start difference. First operand has 167 places, 215 transitions, 3154 flow. Second operand 21 states and 3909 transitions. [2023-08-30 05:25:03,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 284 transitions, 4225 flow [2023-08-30 05:25:03,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 284 transitions, 4088 flow, removed 49 selfloop flow, removed 5 redundant places. [2023-08-30 05:25:03,562 INFO L231 Difference]: Finished difference. Result has 184 places, 221 transitions, 3391 flow [2023-08-30 05:25:03,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3391, PETRI_PLACES=184, PETRI_TRANSITIONS=221} [2023-08-30 05:25:03,562 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2023-08-30 05:25:03,562 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 221 transitions, 3391 flow [2023-08-30 05:25:03,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:03,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:03,563 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:03,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:03,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:03,768 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:03,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:03,769 INFO L85 PathProgramCache]: Analyzing trace with hash 244702093, now seen corresponding path program 16 times [2023-08-30 05:25:03,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:03,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002209728] [2023-08-30 05:25:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:03,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:03,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:03,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002209728] [2023-08-30 05:25:03,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002209728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297593760] [2023-08-30 05:25:03,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:25:03,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:03,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:03,853 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:03,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 05:25:03,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:25:03,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:03,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:03,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:03,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:04,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297593760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:04,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:04,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 05:25:04,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271809299] [2023-08-30 05:25:04,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:04,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:25:04,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:04,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:25:04,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:25:04,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:04,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 221 transitions, 3391 flow. Second operand has 15 states, 15 states have (on average 182.73333333333332) internal successors, (2741), 15 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:04,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:04,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:04,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:04,558 INFO L130 PetriNetUnfolder]: 629/1260 cut-off events. [2023-08-30 05:25:04,558 INFO L131 PetriNetUnfolder]: For 14729/14729 co-relation queries the response was YES. [2023-08-30 05:25:04,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8607 conditions, 1260 events. 629/1260 cut-off events. For 14729/14729 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7390 event pairs, 25 based on Foata normal form. 6/1266 useless extension candidates. Maximal degree in co-relation 8548. Up to 359 conditions per place. [2023-08-30 05:25:04,568 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 152 selfloop transitions, 141 changer transitions 4/297 dead transitions. [2023-08-30 05:25:04,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 297 transitions, 4781 flow [2023-08-30 05:25:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 05:25:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 05:25:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3718 transitions. [2023-08-30 05:25:04,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42442922374429226 [2023-08-30 05:25:04,574 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3718 transitions. [2023-08-30 05:25:04,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3718 transitions. [2023-08-30 05:25:04,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:04,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3718 transitions. [2023-08-30 05:25:04,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 185.9) internal successors, (3718), 20 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:04,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:04,587 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:04,588 INFO L175 Difference]: Start difference. First operand has 184 places, 221 transitions, 3391 flow. Second operand 20 states and 3718 transitions. [2023-08-30 05:25:04,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 297 transitions, 4781 flow [2023-08-30 05:25:04,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 297 transitions, 4502 flow, removed 105 selfloop flow, removed 7 redundant places. [2023-08-30 05:25:04,658 INFO L231 Difference]: Finished difference. Result has 201 places, 244 transitions, 4046 flow [2023-08-30 05:25:04,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4046, PETRI_PLACES=201, PETRI_TRANSITIONS=244} [2023-08-30 05:25:04,659 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2023-08-30 05:25:04,659 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 244 transitions, 4046 flow [2023-08-30 05:25:04,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 182.73333333333332) internal successors, (2741), 15 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:04,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:04,660 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:04,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:04,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:04,861 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:04,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:04,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1495872819, now seen corresponding path program 17 times [2023-08-30 05:25:04,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:04,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105417166] [2023-08-30 05:25:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:04,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:04,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:04,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105417166] [2023-08-30 05:25:04,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105417166] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:04,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144414739] [2023-08-30 05:25:04,932 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:25:04,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:04,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:04,933 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:04,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 05:25:05,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:25:05,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:05,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:05,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:05,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:05,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144414739] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:05,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:05,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 05:25:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87641909] [2023-08-30 05:25:05,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:05,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:25:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:05,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:25:05,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:25:05,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:05,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 244 transitions, 4046 flow. Second operand has 15 states, 15 states have (on average 182.8) internal successors, (2742), 15 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:05,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:05,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:05,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:05,594 INFO L130 PetriNetUnfolder]: 701/1404 cut-off events. [2023-08-30 05:25:05,594 INFO L131 PetriNetUnfolder]: For 21021/21021 co-relation queries the response was YES. [2023-08-30 05:25:05,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10120 conditions, 1404 events. 701/1404 cut-off events. For 21021/21021 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8478 event pairs, 220 based on Foata normal form. 36/1440 useless extension candidates. Maximal degree in co-relation 10056. Up to 1158 conditions per place. [2023-08-30 05:25:05,608 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 262 selfloop transitions, 58 changer transitions 1/321 dead transitions. [2023-08-30 05:25:05,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 321 transitions, 5677 flow [2023-08-30 05:25:05,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 05:25:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 05:25:05,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2445 transitions. [2023-08-30 05:25:05,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293993677555321 [2023-08-30 05:25:05,612 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2445 transitions. [2023-08-30 05:25:05,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2445 transitions. [2023-08-30 05:25:05,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:05,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2445 transitions. [2023-08-30 05:25:05,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 188.07692307692307) internal successors, (2445), 13 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:05,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 438.0) internal successors, (6132), 14 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:05,621 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 438.0) internal successors, (6132), 14 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:05,621 INFO L175 Difference]: Start difference. First operand has 201 places, 244 transitions, 4046 flow. Second operand 13 states and 2445 transitions. [2023-08-30 05:25:05,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 321 transitions, 5677 flow [2023-08-30 05:25:05,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 321 transitions, 5531 flow, removed 35 selfloop flow, removed 7 redundant places. [2023-08-30 05:25:05,750 INFO L231 Difference]: Finished difference. Result has 212 places, 269 transitions, 4671 flow [2023-08-30 05:25:05,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=3900, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4671, PETRI_PLACES=212, PETRI_TRANSITIONS=269} [2023-08-30 05:25:05,751 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2023-08-30 05:25:05,751 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 269 transitions, 4671 flow [2023-08-30 05:25:05,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 182.8) internal successors, (2742), 15 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:05,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:05,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:05,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:05,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:05,957 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:05,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1835640755, now seen corresponding path program 18 times [2023-08-30 05:25:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:05,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629602833] [2023-08-30 05:25:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629602833] [2023-08-30 05:25:06,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629602833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:06,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405924609] [2023-08-30 05:25:06,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:25:06,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:06,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:06,025 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:06,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 05:25:06,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 05:25:06,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:06,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:06,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:06,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:06,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405924609] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:06,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:06,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-30 05:25:06,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337920005] [2023-08-30 05:25:06,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:06,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:25:06,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:25:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:25:06,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:06,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 269 transitions, 4671 flow. Second operand has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:06,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:06,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:06,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:06,725 INFO L130 PetriNetUnfolder]: 735/1492 cut-off events. [2023-08-30 05:25:06,725 INFO L131 PetriNetUnfolder]: For 27399/27399 co-relation queries the response was YES. [2023-08-30 05:25:06,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 1492 events. 735/1492 cut-off events. For 27399/27399 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9319 event pairs, 87 based on Foata normal form. 6/1498 useless extension candidates. Maximal degree in co-relation 11416. Up to 379 conditions per place. [2023-08-30 05:25:06,740 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 187 selfloop transitions, 144 changer transitions 5/336 dead transitions. [2023-08-30 05:25:06,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 336 transitions, 6122 flow [2023-08-30 05:25:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 05:25:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 05:25:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3349 transitions. [2023-08-30 05:25:06,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247843734145104 [2023-08-30 05:25:06,745 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3349 transitions. [2023-08-30 05:25:06,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3349 transitions. [2023-08-30 05:25:06,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:06,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3349 transitions. [2023-08-30 05:25:06,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 186.05555555555554) internal successors, (3349), 18 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:06,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:06,755 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:06,755 INFO L175 Difference]: Start difference. First operand has 212 places, 269 transitions, 4671 flow. Second operand 18 states and 3349 transitions. [2023-08-30 05:25:06,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 336 transitions, 6122 flow [2023-08-30 05:25:06,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 336 transitions, 5670 flow, removed 205 selfloop flow, removed 4 redundant places. [2023-08-30 05:25:06,897 INFO L231 Difference]: Finished difference. Result has 230 places, 283 transitions, 5005 flow [2023-08-30 05:25:06,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=4289, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5005, PETRI_PLACES=230, PETRI_TRANSITIONS=283} [2023-08-30 05:25:06,897 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 201 predicate places. [2023-08-30 05:25:06,898 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 283 transitions, 5005 flow [2023-08-30 05:25:06,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:06,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:06,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:06,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-30 05:25:07,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:07,099 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:07,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 119414706, now seen corresponding path program 19 times [2023-08-30 05:25:07,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:07,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577867315] [2023-08-30 05:25:07,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:07,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:07,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:07,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577867315] [2023-08-30 05:25:07,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577867315] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:07,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598061781] [2023-08-30 05:25:07,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:25:07,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:07,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:07,169 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:07,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-30 05:25:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:07,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:07,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:07,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:07,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598061781] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:07,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:07,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-30 05:25:07,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918297467] [2023-08-30 05:25:07,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:07,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:25:07,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:25:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:25:07,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:07,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 283 transitions, 5005 flow. Second operand has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:07,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:07,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:07,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:07,959 INFO L130 PetriNetUnfolder]: 875/1790 cut-off events. [2023-08-30 05:25:07,960 INFO L131 PetriNetUnfolder]: For 37031/37031 co-relation queries the response was YES. [2023-08-30 05:25:07,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14270 conditions, 1790 events. 875/1790 cut-off events. For 37031/37031 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11693 event pairs, 54 based on Foata normal form. 10/1800 useless extension candidates. Maximal degree in co-relation 14193. Up to 1185 conditions per place. [2023-08-30 05:25:07,979 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 299 selfloop transitions, 102 changer transitions 0/401 dead transitions. [2023-08-30 05:25:07,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 401 transitions, 7620 flow [2023-08-30 05:25:07,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 05:25:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 05:25:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2818 transitions. [2023-08-30 05:25:07,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289193302891933 [2023-08-30 05:25:07,983 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2818 transitions. [2023-08-30 05:25:07,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2818 transitions. [2023-08-30 05:25:07,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:07,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2818 transitions. [2023-08-30 05:25:07,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 187.86666666666667) internal successors, (2818), 15 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:07,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 438.0) internal successors, (7008), 16 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:07,992 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 438.0) internal successors, (7008), 16 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:07,992 INFO L175 Difference]: Start difference. First operand has 230 places, 283 transitions, 5005 flow. Second operand 15 states and 2818 transitions. [2023-08-30 05:25:07,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 401 transitions, 7620 flow [2023-08-30 05:25:08,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 401 transitions, 7328 flow, removed 124 selfloop flow, removed 4 redundant places. [2023-08-30 05:25:08,212 INFO L231 Difference]: Finished difference. Result has 245 places, 327 transitions, 6058 flow [2023-08-30 05:25:08,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6058, PETRI_PLACES=245, PETRI_TRANSITIONS=327} [2023-08-30 05:25:08,212 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 216 predicate places. [2023-08-30 05:25:08,212 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 327 transitions, 6058 flow [2023-08-30 05:25:08,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:08,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:08,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:08,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:08,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-30 05:25:08,413 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:08,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:08,414 INFO L85 PathProgramCache]: Analyzing trace with hash 481739322, now seen corresponding path program 20 times [2023-08-30 05:25:08,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:08,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625500115] [2023-08-30 05:25:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:08,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:08,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:08,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625500115] [2023-08-30 05:25:08,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625500115] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:08,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830101135] [2023-08-30 05:25:08,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:25:08,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:08,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:08,485 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:08,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-30 05:25:08,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:25:08,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:08,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:08,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:08,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:08,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830101135] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:08,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:08,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-30 05:25:08,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189007743] [2023-08-30 05:25:08,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:08,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:25:08,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:25:08,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:25:08,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:08,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 327 transitions, 6058 flow. Second operand has 13 states, 13 states have (on average 183.07692307692307) internal successors, (2380), 13 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:08,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:08,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:08,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:09,372 INFO L130 PetriNetUnfolder]: 926/1897 cut-off events. [2023-08-30 05:25:09,373 INFO L131 PetriNetUnfolder]: For 43347/43347 co-relation queries the response was YES. [2023-08-30 05:25:09,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15614 conditions, 1897 events. 926/1897 cut-off events. For 43347/43347 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12649 event pairs, 40 based on Foata normal form. 16/1913 useless extension candidates. Maximal degree in co-relation 15531. Up to 932 conditions per place. [2023-08-30 05:25:09,391 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 279 selfloop transitions, 129 changer transitions 1/409 dead transitions. [2023-08-30 05:25:09,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 409 transitions, 8137 flow [2023-08-30 05:25:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 05:25:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 05:25:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3905 transitions. [2023-08-30 05:25:09,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42454881495977387 [2023-08-30 05:25:09,401 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3905 transitions. [2023-08-30 05:25:09,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3905 transitions. [2023-08-30 05:25:09,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:09,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3905 transitions. [2023-08-30 05:25:09,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 185.95238095238096) internal successors, (3905), 21 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:09,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:09,413 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:09,413 INFO L175 Difference]: Start difference. First operand has 245 places, 327 transitions, 6058 flow. Second operand 21 states and 3905 transitions. [2023-08-30 05:25:09,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 409 transitions, 8137 flow [2023-08-30 05:25:09,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 409 transitions, 7601 flow, removed 173 selfloop flow, removed 8 redundant places. [2023-08-30 05:25:09,707 INFO L231 Difference]: Finished difference. Result has 266 places, 356 transitions, 6760 flow [2023-08-30 05:25:09,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=5664, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6760, PETRI_PLACES=266, PETRI_TRANSITIONS=356} [2023-08-30 05:25:09,708 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2023-08-30 05:25:09,708 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 356 transitions, 6760 flow [2023-08-30 05:25:09,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.07692307692307) internal successors, (2380), 13 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:09,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:09,709 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:09,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:09,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-30 05:25:09,914 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:09,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:09,914 INFO L85 PathProgramCache]: Analyzing trace with hash -881269082, now seen corresponding path program 21 times [2023-08-30 05:25:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433962139] [2023-08-30 05:25:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:09,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:09,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433962139] [2023-08-30 05:25:09,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433962139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186487874] [2023-08-30 05:25:09,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:25:09,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:09,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:09,981 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:10,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-30 05:25:10,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:25:10,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:10,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:10,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:10,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:25:10,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186487874] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:10,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-30 05:25:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840023221] [2023-08-30 05:25:10,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:10,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:25:10,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:10,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:25:10,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:25:10,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:10,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 356 transitions, 6760 flow. Second operand has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:10,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:10,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:10,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:11,016 INFO L130 PetriNetUnfolder]: 909/1876 cut-off events. [2023-08-30 05:25:11,017 INFO L131 PetriNetUnfolder]: For 44600/44600 co-relation queries the response was YES. [2023-08-30 05:25:11,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15618 conditions, 1876 events. 909/1876 cut-off events. For 44600/44600 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12556 event pairs, 30 based on Foata normal form. 16/1892 useless extension candidates. Maximal degree in co-relation 15527. Up to 736 conditions per place. [2023-08-30 05:25:11,032 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 281 selfloop transitions, 158 changer transitions 1/440 dead transitions. [2023-08-30 05:25:11,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 440 transitions, 8531 flow [2023-08-30 05:25:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 05:25:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 05:25:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3928 transitions. [2023-08-30 05:25:11,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42704935855620785 [2023-08-30 05:25:11,037 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3928 transitions. [2023-08-30 05:25:11,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3928 transitions. [2023-08-30 05:25:11,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:11,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3928 transitions. [2023-08-30 05:25:11,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 187.04761904761904) internal successors, (3928), 21 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:11,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:11,049 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:11,049 INFO L175 Difference]: Start difference. First operand has 266 places, 356 transitions, 6760 flow. Second operand 21 states and 3928 transitions. [2023-08-30 05:25:11,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 440 transitions, 8531 flow [2023-08-30 05:25:11,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 440 transitions, 8208 flow, removed 122 selfloop flow, removed 10 redundant places. [2023-08-30 05:25:11,304 INFO L231 Difference]: Finished difference. Result has 280 places, 365 transitions, 7138 flow [2023-08-30 05:25:11,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=6334, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7138, PETRI_PLACES=280, PETRI_TRANSITIONS=365} [2023-08-30 05:25:11,305 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 251 predicate places. [2023-08-30 05:25:11,305 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 365 transitions, 7138 flow [2023-08-30 05:25:11,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:11,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:11,306 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:11,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-30 05:25:11,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-30 05:25:11,507 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:11,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1859052538, now seen corresponding path program 22 times [2023-08-30 05:25:11,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:11,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392970001] [2023-08-30 05:25:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:11,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:11,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392970001] [2023-08-30 05:25:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392970001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560853598] [2023-08-30 05:25:11,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:25:11,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:11,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:11,579 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:11,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-30 05:25:11,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:25:11,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:11,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:11,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:11,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:11,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560853598] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:11,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:11,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 05:25:11,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295082430] [2023-08-30 05:25:11,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:11,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:25:11,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:25:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:25:11,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:11,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 365 transitions, 7138 flow. Second operand has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:11,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:11,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:11,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:12,729 INFO L130 PetriNetUnfolder]: 926/1921 cut-off events. [2023-08-30 05:25:12,730 INFO L131 PetriNetUnfolder]: For 49114/49114 co-relation queries the response was YES. [2023-08-30 05:25:12,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16585 conditions, 1921 events. 926/1921 cut-off events. For 49114/49114 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12977 event pairs, 32 based on Foata normal form. 16/1937 useless extension candidates. Maximal degree in co-relation 16493. Up to 797 conditions per place. [2023-08-30 05:25:12,754 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 268 selfloop transitions, 170 changer transitions 5/443 dead transitions. [2023-08-30 05:25:12,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 443 transitions, 8964 flow [2023-08-30 05:25:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 05:25:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 05:25:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4284 transitions. [2023-08-30 05:25:12,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252531268612269 [2023-08-30 05:25:12,759 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4284 transitions. [2023-08-30 05:25:12,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4284 transitions. [2023-08-30 05:25:12,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:12,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4284 transitions. [2023-08-30 05:25:12,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 186.2608695652174) internal successors, (4284), 23 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:12,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 438.0) internal successors, (10512), 24 states have internal predecessors, (10512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:12,775 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 438.0) internal successors, (10512), 24 states have internal predecessors, (10512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:12,775 INFO L175 Difference]: Start difference. First operand has 280 places, 365 transitions, 7138 flow. Second operand 23 states and 4284 transitions. [2023-08-30 05:25:12,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 443 transitions, 8964 flow [2023-08-30 05:25:13,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 443 transitions, 8493 flow, removed 195 selfloop flow, removed 9 redundant places. [2023-08-30 05:25:13,134 INFO L231 Difference]: Finished difference. Result has 298 places, 376 transitions, 7633 flow [2023-08-30 05:25:13,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=6755, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7633, PETRI_PLACES=298, PETRI_TRANSITIONS=376} [2023-08-30 05:25:13,135 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 269 predicate places. [2023-08-30 05:25:13,135 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 376 transitions, 7633 flow [2023-08-30 05:25:13,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:13,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:13,135 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:13,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:13,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:13,336 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:13,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:13,336 INFO L85 PathProgramCache]: Analyzing trace with hash -574540519, now seen corresponding path program 23 times [2023-08-30 05:25:13,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:13,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759366254] [2023-08-30 05:25:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:13,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:13,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:13,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759366254] [2023-08-30 05:25:13,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759366254] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:13,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522666105] [2023-08-30 05:25:13,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:25:13,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:13,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:13,405 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:13,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-30 05:25:13,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:25:13,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:13,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:13,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:13,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:25:13,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522666105] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:13,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:13,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-30 05:25:13,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937584792] [2023-08-30 05:25:13,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:13,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:25:13,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:25:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:25:13,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:13,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 376 transitions, 7633 flow. Second operand has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:13,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:13,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:13,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:14,350 INFO L130 PetriNetUnfolder]: 1053/2178 cut-off events. [2023-08-30 05:25:14,350 INFO L131 PetriNetUnfolder]: For 61695/61695 co-relation queries the response was YES. [2023-08-30 05:25:14,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19499 conditions, 2178 events. 1053/2178 cut-off events. For 61695/61695 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 15178 event pairs, 153 based on Foata normal form. 16/2194 useless extension candidates. Maximal degree in co-relation 19401. Up to 621 conditions per place. [2023-08-30 05:25:14,370 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 299 selfloop transitions, 174 changer transitions 2/475 dead transitions. [2023-08-30 05:25:14,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 475 transitions, 10418 flow [2023-08-30 05:25:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 05:25:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 05:25:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2983 transitions. [2023-08-30 05:25:14,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256563926940639 [2023-08-30 05:25:14,373 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2983 transitions. [2023-08-30 05:25:14,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2983 transitions. [2023-08-30 05:25:14,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:14,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2983 transitions. [2023-08-30 05:25:14,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 186.4375) internal successors, (2983), 16 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:14,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 438.0) internal successors, (7446), 17 states have internal predecessors, (7446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:14,383 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 438.0) internal successors, (7446), 17 states have internal predecessors, (7446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:14,383 INFO L175 Difference]: Start difference. First operand has 298 places, 376 transitions, 7633 flow. Second operand 16 states and 2983 transitions. [2023-08-30 05:25:14,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 475 transitions, 10418 flow [2023-08-30 05:25:14,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 475 transitions, 9844 flow, removed 203 selfloop flow, removed 11 redundant places. [2023-08-30 05:25:14,747 INFO L231 Difference]: Finished difference. Result has 308 places, 413 transitions, 8796 flow [2023-08-30 05:25:14,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=7112, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8796, PETRI_PLACES=308, PETRI_TRANSITIONS=413} [2023-08-30 05:25:14,748 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 279 predicate places. [2023-08-30 05:25:14,748 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 413 transitions, 8796 flow [2023-08-30 05:25:14,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:14,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:14,749 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:14,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:14,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-30 05:25:14,949 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:14,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1485921204, now seen corresponding path program 24 times [2023-08-30 05:25:14,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:14,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254892043] [2023-08-30 05:25:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:14,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:15,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254892043] [2023-08-30 05:25:15,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254892043] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284934472] [2023-08-30 05:25:15,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:25:15,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:15,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:15,028 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:15,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-30 05:25:15,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 05:25:15,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:15,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:15,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:15,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:15,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284934472] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:15,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:15,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-30 05:25:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636293531] [2023-08-30 05:25:15,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:15,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 05:25:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 05:25:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:25:15,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:15,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 413 transitions, 8796 flow. Second operand has 11 states, 11 states have (on average 183.0909090909091) internal successors, (2014), 11 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:15,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:15,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:15,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:15,803 INFO L130 PetriNetUnfolder]: 1084/2221 cut-off events. [2023-08-30 05:25:15,804 INFO L131 PetriNetUnfolder]: For 65458/65458 co-relation queries the response was YES. [2023-08-30 05:25:15,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20302 conditions, 2221 events. 1084/2221 cut-off events. For 65458/65458 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 15338 event pairs, 44 based on Foata normal form. 16/2237 useless extension candidates. Maximal degree in co-relation 20199. Up to 1681 conditions per place. [2023-08-30 05:25:15,821 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 351 selfloop transitions, 104 changer transitions 0/455 dead transitions. [2023-08-30 05:25:15,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 455 transitions, 10367 flow [2023-08-30 05:25:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:25:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:25:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1314 transitions. [2023-08-30 05:25:15,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-30 05:25:15,823 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1314 transitions. [2023-08-30 05:25:15,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1314 transitions. [2023-08-30 05:25:15,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:15,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1314 transitions. [2023-08-30 05:25:15,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.71428571428572) internal successors, (1314), 7 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:15,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:15,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:15,826 INFO L175 Difference]: Start difference. First operand has 308 places, 413 transitions, 8796 flow. Second operand 7 states and 1314 transitions. [2023-08-30 05:25:15,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 455 transitions, 10367 flow [2023-08-30 05:25:16,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 455 transitions, 9894 flow, removed 186 selfloop flow, removed 7 redundant places. [2023-08-30 05:25:16,182 INFO L231 Difference]: Finished difference. Result has 308 places, 424 transitions, 8838 flow [2023-08-30 05:25:16,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=8229, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8838, PETRI_PLACES=308, PETRI_TRANSITIONS=424} [2023-08-30 05:25:16,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 279 predicate places. [2023-08-30 05:25:16,183 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 424 transitions, 8838 flow [2023-08-30 05:25:16,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 183.0909090909091) internal successors, (2014), 11 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:16,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:16,183 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:16,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-30 05:25:16,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-30 05:25:16,385 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:16,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:16,385 INFO L85 PathProgramCache]: Analyzing trace with hash 717663227, now seen corresponding path program 25 times [2023-08-30 05:25:16,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:16,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954542590] [2023-08-30 05:25:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:16,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:16,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954542590] [2023-08-30 05:25:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954542590] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931079350] [2023-08-30 05:25:16,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:25:16,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:16,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:16,445 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:16,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-30 05:25:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:16,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:16,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:16,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:16,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931079350] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:16,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:16,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-30 05:25:16,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052478273] [2023-08-30 05:25:16,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:16,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 05:25:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:16,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 05:25:16,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:25:16,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:16,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 424 transitions, 8838 flow. Second operand has 11 states, 11 states have (on average 183.0909090909091) internal successors, (2014), 11 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:16,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:16,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:16,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:17,301 INFO L130 PetriNetUnfolder]: 1080/2209 cut-off events. [2023-08-30 05:25:17,301 INFO L131 PetriNetUnfolder]: For 57907/57907 co-relation queries the response was YES. [2023-08-30 05:25:17,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19579 conditions, 2209 events. 1080/2209 cut-off events. For 57907/57907 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 15257 event pairs, 209 based on Foata normal form. 2/2211 useless extension candidates. Maximal degree in co-relation 19475. Up to 1055 conditions per place. [2023-08-30 05:25:17,325 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 303 selfloop transitions, 139 changer transitions 5/447 dead transitions. [2023-08-30 05:25:17,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 447 transitions, 9899 flow [2023-08-30 05:25:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:25:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:25:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2045 transitions. [2023-08-30 05:25:17,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244499792444998 [2023-08-30 05:25:17,328 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2045 transitions. [2023-08-30 05:25:17,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2045 transitions. [2023-08-30 05:25:17,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:17,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2045 transitions. [2023-08-30 05:25:17,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:17,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:17,332 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:17,332 INFO L175 Difference]: Start difference. First operand has 308 places, 424 transitions, 8838 flow. Second operand 11 states and 2045 transitions. [2023-08-30 05:25:17,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 447 transitions, 9899 flow [2023-08-30 05:25:17,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 447 transitions, 9723 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-08-30 05:25:17,712 INFO L231 Difference]: Finished difference. Result has 313 places, 420 transitions, 8852 flow [2023-08-30 05:25:17,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=8641, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8852, PETRI_PLACES=313, PETRI_TRANSITIONS=420} [2023-08-30 05:25:17,713 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2023-08-30 05:25:17,713 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 420 transitions, 8852 flow [2023-08-30 05:25:17,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 183.0909090909091) internal successors, (2014), 11 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:17,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:17,713 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:17,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-08-30 05:25:17,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:17,914 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:17,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1669212684, now seen corresponding path program 26 times [2023-08-30 05:25:17,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:17,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464325160] [2023-08-30 05:25:17,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:17,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:17,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464325160] [2023-08-30 05:25:17,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464325160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458471545] [2023-08-30 05:25:17,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:25:17,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:17,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:17,993 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:18,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-30 05:25:18,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:25:18,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:18,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:18,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:18,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:18,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458471545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:18,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:18,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-30 05:25:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179101947] [2023-08-30 05:25:18,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:18,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:25:18,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:25:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:25:18,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:18,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 420 transitions, 8852 flow. Second operand has 13 states, 13 states have (on average 183.07692307692307) internal successors, (2380), 13 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:18,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:18,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:18,832 INFO L130 PetriNetUnfolder]: 1114/2253 cut-off events. [2023-08-30 05:25:18,832 INFO L131 PetriNetUnfolder]: For 61609/61609 co-relation queries the response was YES. [2023-08-30 05:25:18,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20303 conditions, 2253 events. 1114/2253 cut-off events. For 61609/61609 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 15393 event pairs, 80 based on Foata normal form. 16/2269 useless extension candidates. Maximal degree in co-relation 20201. Up to 1994 conditions per place. [2023-08-30 05:25:18,853 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 386 selfloop transitions, 74 changer transitions 0/460 dead transitions. [2023-08-30 05:25:18,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 460 transitions, 10347 flow [2023-08-30 05:25:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:25:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:25:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2049 transitions. [2023-08-30 05:25:18,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42528019925280197 [2023-08-30 05:25:18,855 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2049 transitions. [2023-08-30 05:25:18,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2049 transitions. [2023-08-30 05:25:18,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:18,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2049 transitions. [2023-08-30 05:25:18,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 186.27272727272728) internal successors, (2049), 11 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:18,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:18,860 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:18,860 INFO L175 Difference]: Start difference. First operand has 313 places, 420 transitions, 8852 flow. Second operand 11 states and 2049 transitions. [2023-08-30 05:25:18,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 460 transitions, 10347 flow [2023-08-30 05:25:19,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 460 transitions, 10070 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 05:25:19,247 INFO L231 Difference]: Finished difference. Result has 312 places, 437 transitions, 9116 flow [2023-08-30 05:25:19,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=8466, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9116, PETRI_PLACES=312, PETRI_TRANSITIONS=437} [2023-08-30 05:25:19,248 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 283 predicate places. [2023-08-30 05:25:19,248 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 437 transitions, 9116 flow [2023-08-30 05:25:19,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.07692307692307) internal successors, (2380), 13 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:19,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:19,249 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:19,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:19,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:19,449 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:19,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:19,450 INFO L85 PathProgramCache]: Analyzing trace with hash -973883700, now seen corresponding path program 27 times [2023-08-30 05:25:19,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:19,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192941329] [2023-08-30 05:25:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:19,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:19,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:19,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192941329] [2023-08-30 05:25:19,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192941329] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922860343] [2023-08-30 05:25:19,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:25:19,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:19,515 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:19,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-30 05:25:19,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:25:19,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:19,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:19,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:19,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922860343] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:19,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:19,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 05:25:19,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464837163] [2023-08-30 05:25:19,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:19,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:25:19,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:25:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:25:19,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:19,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 437 transitions, 9116 flow. Second operand has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:19,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:19,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:19,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:20,579 INFO L130 PetriNetUnfolder]: 1144/2309 cut-off events. [2023-08-30 05:25:20,580 INFO L131 PetriNetUnfolder]: For 61387/61387 co-relation queries the response was YES. [2023-08-30 05:25:20,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20755 conditions, 2309 events. 1144/2309 cut-off events. For 61387/61387 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 15845 event pairs, 38 based on Foata normal form. 8/2317 useless extension candidates. Maximal degree in co-relation 20649. Up to 990 conditions per place. [2023-08-30 05:25:20,605 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 302 selfloop transitions, 202 changer transitions 4/508 dead transitions. [2023-08-30 05:25:20,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 508 transitions, 11073 flow [2023-08-30 05:25:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 05:25:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 05:25:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3721 transitions. [2023-08-30 05:25:20,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247716894977169 [2023-08-30 05:25:20,609 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3721 transitions. [2023-08-30 05:25:20,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3721 transitions. [2023-08-30 05:25:20,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:20,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3721 transitions. [2023-08-30 05:25:20,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 186.05) internal successors, (3721), 20 states have internal predecessors, (3721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:20,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:20,619 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:20,619 INFO L175 Difference]: Start difference. First operand has 312 places, 437 transitions, 9116 flow. Second operand 20 states and 3721 transitions. [2023-08-30 05:25:20,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 508 transitions, 11073 flow [2023-08-30 05:25:21,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 508 transitions, 10905 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-08-30 05:25:21,093 INFO L231 Difference]: Finished difference. Result has 330 places, 450 transitions, 9930 flow [2023-08-30 05:25:21,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=8910, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9930, PETRI_PLACES=330, PETRI_TRANSITIONS=450} [2023-08-30 05:25:21,093 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 301 predicate places. [2023-08-30 05:25:21,093 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 450 transitions, 9930 flow [2023-08-30 05:25:21,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:21,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:21,094 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:21,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-08-30 05:25:21,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-30 05:25:21,297 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:21,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:21,297 INFO L85 PathProgramCache]: Analyzing trace with hash -823420366, now seen corresponding path program 28 times [2023-08-30 05:25:21,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:21,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740067075] [2023-08-30 05:25:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:21,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:21,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:21,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740067075] [2023-08-30 05:25:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740067075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:21,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041585501] [2023-08-30 05:25:21,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:25:21,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:21,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:21,362 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:21,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-30 05:25:21,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:25:21,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:21,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:21,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:21,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:21,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041585501] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:21,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:21,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 05:25:21,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031677841] [2023-08-30 05:25:21,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:21,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:25:21,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:21,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:25:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:25:21,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:21,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 450 transitions, 9930 flow. Second operand has 12 states, 12 states have (on average 183.08333333333334) internal successors, (2197), 12 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:21,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:21,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:21,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:22,290 INFO L130 PetriNetUnfolder]: 1123/2260 cut-off events. [2023-08-30 05:25:22,290 INFO L131 PetriNetUnfolder]: For 67887/67887 co-relation queries the response was YES. [2023-08-30 05:25:22,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21208 conditions, 2260 events. 1123/2260 cut-off events. For 67887/67887 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 15391 event pairs, 76 based on Foata normal form. 16/2276 useless extension candidates. Maximal degree in co-relation 21097. Up to 1737 conditions per place. [2023-08-30 05:25:22,312 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 355 selfloop transitions, 121 changer transitions 0/476 dead transitions. [2023-08-30 05:25:22,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 476 transitions, 11077 flow [2023-08-30 05:25:22,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 05:25:22,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 05:25:22,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2607 transitions. [2023-08-30 05:25:22,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425146771037182 [2023-08-30 05:25:22,314 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2607 transitions. [2023-08-30 05:25:22,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2607 transitions. [2023-08-30 05:25:22,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:22,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2607 transitions. [2023-08-30 05:25:22,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 186.21428571428572) internal successors, (2607), 14 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:22,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:22,320 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:22,320 INFO L175 Difference]: Start difference. First operand has 330 places, 450 transitions, 9930 flow. Second operand 14 states and 2607 transitions. [2023-08-30 05:25:22,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 476 transitions, 11077 flow [2023-08-30 05:25:22,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 476 transitions, 10723 flow, removed 33 selfloop flow, removed 15 redundant places. [2023-08-30 05:25:22,846 INFO L231 Difference]: Finished difference. Result has 323 places, 443 transitions, 9692 flow [2023-08-30 05:25:22,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=9358, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9692, PETRI_PLACES=323, PETRI_TRANSITIONS=443} [2023-08-30 05:25:22,847 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 294 predicate places. [2023-08-30 05:25:22,847 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 443 transitions, 9692 flow [2023-08-30 05:25:22,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.08333333333334) internal successors, (2197), 12 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:22,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:22,848 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:22,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:23,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:23,053 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:23,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash -611760485, now seen corresponding path program 29 times [2023-08-30 05:25:23,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:23,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765416379] [2023-08-30 05:25:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:23,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:23,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765416379] [2023-08-30 05:25:23,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765416379] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235896280] [2023-08-30 05:25:23,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:25:23,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:23,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:23,129 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:23,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-30 05:25:23,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:25:23,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:23,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:23,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:23,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235896280] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:23,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-30 05:25:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48814601] [2023-08-30 05:25:23,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:23,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:25:23,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:23,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:25:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:25:23,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:23,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 443 transitions, 9692 flow. Second operand has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:23,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:23,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:23,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:24,065 INFO L130 PetriNetUnfolder]: 1141/2316 cut-off events. [2023-08-30 05:25:24,065 INFO L131 PetriNetUnfolder]: For 69197/69197 co-relation queries the response was YES. [2023-08-30 05:25:24,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21426 conditions, 2316 events. 1141/2316 cut-off events. For 69197/69197 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 16025 event pairs, 317 based on Foata normal form. 18/2334 useless extension candidates. Maximal degree in co-relation 21317. Up to 1661 conditions per place. [2023-08-30 05:25:24,091 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 398 selfloop transitions, 104 changer transitions 0/502 dead transitions. [2023-08-30 05:25:24,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 502 transitions, 11539 flow [2023-08-30 05:25:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:25:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:25:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2246 transitions. [2023-08-30 05:25:24,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273211567732116 [2023-08-30 05:25:24,093 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2246 transitions. [2023-08-30 05:25:24,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2246 transitions. [2023-08-30 05:25:24,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:24,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2246 transitions. [2023-08-30 05:25:24,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 187.16666666666666) internal successors, (2246), 12 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:24,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:24,099 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:24,099 INFO L175 Difference]: Start difference. First operand has 323 places, 443 transitions, 9692 flow. Second operand 12 states and 2246 transitions. [2023-08-30 05:25:24,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 502 transitions, 11539 flow [2023-08-30 05:25:24,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 502 transitions, 11285 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-08-30 05:25:24,597 INFO L231 Difference]: Finished difference. Result has 325 places, 451 transitions, 9883 flow [2023-08-30 05:25:24,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=9284, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9883, PETRI_PLACES=325, PETRI_TRANSITIONS=451} [2023-08-30 05:25:24,597 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 296 predicate places. [2023-08-30 05:25:24,597 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 451 transitions, 9883 flow [2023-08-30 05:25:24,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:24,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:24,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:24,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:24,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-30 05:25:24,799 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:24,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:24,799 INFO L85 PathProgramCache]: Analyzing trace with hash 64083315, now seen corresponding path program 30 times [2023-08-30 05:25:24,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:24,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470029702] [2023-08-30 05:25:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:24,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:24,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:24,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470029702] [2023-08-30 05:25:24,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470029702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:24,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965199461] [2023-08-30 05:25:24,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:25:24,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:24,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:24,864 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:24,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-30 05:25:24,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:25:24,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:24,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:24,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:24,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:25,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965199461] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:25,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:25,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 05:25:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828134315] [2023-08-30 05:25:25,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:25,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:25:25,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:25:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:25:25,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:25,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 451 transitions, 9883 flow. Second operand has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:25,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:25,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:25,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:25,828 INFO L130 PetriNetUnfolder]: 1203/2456 cut-off events. [2023-08-30 05:25:25,828 INFO L131 PetriNetUnfolder]: For 77520/77520 co-relation queries the response was YES. [2023-08-30 05:25:25,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23151 conditions, 2456 events. 1203/2456 cut-off events. For 77520/77520 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 17358 event pairs, 274 based on Foata normal form. 12/2468 useless extension candidates. Maximal degree in co-relation 23041. Up to 1444 conditions per place. [2023-08-30 05:25:25,852 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 366 selfloop transitions, 168 changer transitions 0/534 dead transitions. [2023-08-30 05:25:25,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 534 transitions, 12508 flow [2023-08-30 05:25:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 05:25:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 05:25:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2437 transitions. [2023-08-30 05:25:25,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42799438004917456 [2023-08-30 05:25:25,855 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2437 transitions. [2023-08-30 05:25:25,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2437 transitions. [2023-08-30 05:25:25,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:25,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2437 transitions. [2023-08-30 05:25:25,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 187.46153846153845) internal successors, (2437), 13 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:25,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 438.0) internal successors, (6132), 14 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:25,860 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 438.0) internal successors, (6132), 14 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:25,860 INFO L175 Difference]: Start difference. First operand has 325 places, 451 transitions, 9883 flow. Second operand 13 states and 2437 transitions. [2023-08-30 05:25:25,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 534 transitions, 12508 flow [2023-08-30 05:25:26,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 534 transitions, 12276 flow, removed 33 selfloop flow, removed 11 redundant places. [2023-08-30 05:25:26,358 INFO L231 Difference]: Finished difference. Result has 328 places, 467 transitions, 10596 flow [2023-08-30 05:25:26,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=9541, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10596, PETRI_PLACES=328, PETRI_TRANSITIONS=467} [2023-08-30 05:25:26,359 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 299 predicate places. [2023-08-30 05:25:26,359 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 467 transitions, 10596 flow [2023-08-30 05:25:26,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:26,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:26,360 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:26,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:26,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:26,566 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:26,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:26,566 INFO L85 PathProgramCache]: Analyzing trace with hash 73597651, now seen corresponding path program 31 times [2023-08-30 05:25:26,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:26,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731992373] [2023-08-30 05:25:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:26,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:26,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:26,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731992373] [2023-08-30 05:25:26,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731992373] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:26,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42972024] [2023-08-30 05:25:26,626 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:25:26,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:26,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:26,628 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:26,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-30 05:25:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:26,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:25:26,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:26,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:26,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42972024] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:26,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:26,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 05:25:26,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70660625] [2023-08-30 05:25:26,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:26,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:25:26,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:26,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:25:26,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:25:26,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:25:26,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 467 transitions, 10596 flow. Second operand has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:26,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:26,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:25:26,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:27,665 INFO L130 PetriNetUnfolder]: 1197/2442 cut-off events. [2023-08-30 05:25:27,666 INFO L131 PetriNetUnfolder]: For 77508/77508 co-relation queries the response was YES. [2023-08-30 05:25:27,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23448 conditions, 2442 events. 1197/2442 cut-off events. For 77508/77508 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 17218 event pairs, 167 based on Foata normal form. 6/2448 useless extension candidates. Maximal degree in co-relation 23339. Up to 703 conditions per place. [2023-08-30 05:25:27,689 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 329 selfloop transitions, 197 changer transitions 2/528 dead transitions. [2023-08-30 05:25:27,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 528 transitions, 12627 flow [2023-08-30 05:25:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 05:25:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 05:25:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3348 transitions. [2023-08-30 05:25:27,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2023-08-30 05:25:27,694 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3348 transitions. [2023-08-30 05:25:27,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3348 transitions. [2023-08-30 05:25:27,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:27,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3348 transitions. [2023-08-30 05:25:27,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 186.0) internal successors, (3348), 18 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:27,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:27,700 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:27,700 INFO L175 Difference]: Start difference. First operand has 328 places, 467 transitions, 10596 flow. Second operand 18 states and 3348 transitions. [2023-08-30 05:25:27,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 528 transitions, 12627 flow [2023-08-30 05:25:28,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 528 transitions, 12421 flow, removed 59 selfloop flow, removed 7 redundant places. [2023-08-30 05:25:28,206 INFO L231 Difference]: Finished difference. Result has 337 places, 468 transitions, 10932 flow [2023-08-30 05:25:28,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=10272, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10932, PETRI_PLACES=337, PETRI_TRANSITIONS=468} [2023-08-30 05:25:28,206 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 308 predicate places. [2023-08-30 05:25:28,207 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 468 transitions, 10932 flow [2023-08-30 05:25:28,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:28,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:28,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:28,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:28,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-30 05:25:28,408 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:28,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:28,408 INFO L85 PathProgramCache]: Analyzing trace with hash -497534338, now seen corresponding path program 32 times [2023-08-30 05:25:28,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:28,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063060010] [2023-08-30 05:25:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:28,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:28,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063060010] [2023-08-30 05:25:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063060010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724725376] [2023-08-30 05:25:28,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:25:28,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:28,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:28,901 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:28,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-30 05:25:29,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:25:29,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:29,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:29,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:29,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724725376] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:29,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:29,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 05:25:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216479841] [2023-08-30 05:25:29,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:29,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:25:29,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:25:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-08-30 05:25:29,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:25:29,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 468 transitions, 10932 flow. Second operand has 19 states, 19 states have (on average 175.05263157894737) internal successors, (3326), 19 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:29,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:29,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:25:29,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:30,761 INFO L130 PetriNetUnfolder]: 1392/2876 cut-off events. [2023-08-30 05:25:30,761 INFO L131 PetriNetUnfolder]: For 93552/93554 co-relation queries the response was YES. [2023-08-30 05:25:30,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28207 conditions, 2876 events. 1392/2876 cut-off events. For 93552/93554 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 21203 event pairs, 93 based on Foata normal form. 5/2876 useless extension candidates. Maximal degree in co-relation 28097. Up to 2263 conditions per place. [2023-08-30 05:25:30,806 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 473 selfloop transitions, 112 changer transitions 14/609 dead transitions. [2023-08-30 05:25:30,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 609 transitions, 14541 flow [2023-08-30 05:25:30,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:25:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:25:30,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1985 transitions. [2023-08-30 05:25:30,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119966791199668 [2023-08-30 05:25:30,809 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1985 transitions. [2023-08-30 05:25:30,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1985 transitions. [2023-08-30 05:25:30,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:30,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1985 transitions. [2023-08-30 05:25:30,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 180.45454545454547) internal successors, (1985), 11 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:30,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:30,814 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:30,814 INFO L175 Difference]: Start difference. First operand has 337 places, 468 transitions, 10932 flow. Second operand 11 states and 1985 transitions. [2023-08-30 05:25:30,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 609 transitions, 14541 flow [2023-08-30 05:25:31,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 609 transitions, 14282 flow, removed 55 selfloop flow, removed 8 redundant places. [2023-08-30 05:25:31,694 INFO L231 Difference]: Finished difference. Result has 345 places, 533 transitions, 12728 flow [2023-08-30 05:25:31,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=10715, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12728, PETRI_PLACES=345, PETRI_TRANSITIONS=533} [2023-08-30 05:25:31,695 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 316 predicate places. [2023-08-30 05:25:31,695 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 533 transitions, 12728 flow [2023-08-30 05:25:31,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 175.05263157894737) internal successors, (3326), 19 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:31,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:31,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:31,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:31,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-30 05:25:31,903 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:31,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:31,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1390097594, now seen corresponding path program 33 times [2023-08-30 05:25:31,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:31,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481006695] [2023-08-30 05:25:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:31,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:32,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:32,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481006695] [2023-08-30 05:25:32,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481006695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:32,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827567060] [2023-08-30 05:25:32,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:25:32,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:32,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:32,402 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:32,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-30 05:25:32,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:25:32,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:32,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:32,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:32,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827567060] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:32,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:32,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-30 05:25:32,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013289806] [2023-08-30 05:25:32,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:32,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:25:32,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:32,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:25:32,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:25:33,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:25:33,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 533 transitions, 12728 flow. Second operand has 15 states, 15 states have (on average 175.2) internal successors, (2628), 15 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:33,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:33,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:25:33,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:34,291 INFO L130 PetriNetUnfolder]: 1392/2852 cut-off events. [2023-08-30 05:25:34,292 INFO L131 PetriNetUnfolder]: For 97015/97017 co-relation queries the response was YES. [2023-08-30 05:25:34,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29031 conditions, 2852 events. 1392/2852 cut-off events. For 97015/97017 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 20825 event pairs, 108 based on Foata normal form. 7/2854 useless extension candidates. Maximal degree in co-relation 28911. Up to 2471 conditions per place. [2023-08-30 05:25:34,326 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 480 selfloop transitions, 81 changer transitions 19/590 dead transitions. [2023-08-30 05:25:34,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 590 transitions, 14437 flow [2023-08-30 05:25:34,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:25:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:25:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2149 transitions. [2023-08-30 05:25:34,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088660578386606 [2023-08-30 05:25:34,331 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2149 transitions. [2023-08-30 05:25:34,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2149 transitions. [2023-08-30 05:25:34,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:34,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2149 transitions. [2023-08-30 05:25:34,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.08333333333334) internal successors, (2149), 12 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:34,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:34,336 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:34,336 INFO L175 Difference]: Start difference. First operand has 345 places, 533 transitions, 12728 flow. Second operand 12 states and 2149 transitions. [2023-08-30 05:25:34,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 590 transitions, 14437 flow [2023-08-30 05:25:35,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 590 transitions, 14151 flow, removed 143 selfloop flow, removed 2 redundant places. [2023-08-30 05:25:35,363 INFO L231 Difference]: Finished difference. Result has 358 places, 538 transitions, 12853 flow [2023-08-30 05:25:35,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=12460, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12853, PETRI_PLACES=358, PETRI_TRANSITIONS=538} [2023-08-30 05:25:35,364 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 329 predicate places. [2023-08-30 05:25:35,364 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 538 transitions, 12853 flow [2023-08-30 05:25:35,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.2) internal successors, (2628), 15 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:35,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:35,365 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:35,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:35,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-30 05:25:35,565 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:35,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash 18209984, now seen corresponding path program 34 times [2023-08-30 05:25:35,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:35,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921613535] [2023-08-30 05:25:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:35,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:35,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:35,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921613535] [2023-08-30 05:25:35,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921613535] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:35,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364105802] [2023-08-30 05:25:35,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:25:35,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:35,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:35,977 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:35,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-30 05:25:36,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:25:36,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:36,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:36,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:36,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:36,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364105802] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:36,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:36,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 05:25:36,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008834436] [2023-08-30 05:25:36,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:36,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 05:25:36,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:36,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 05:25:36,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-08-30 05:25:36,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:25:36,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 538 transitions, 12853 flow. Second operand has 18 states, 18 states have (on average 175.05555555555554) internal successors, (3151), 18 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:36,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:36,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:25:36,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:37,732 INFO L130 PetriNetUnfolder]: 1360/2762 cut-off events. [2023-08-30 05:25:37,732 INFO L131 PetriNetUnfolder]: For 90264/90266 co-relation queries the response was YES. [2023-08-30 05:25:37,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28057 conditions, 2762 events. 1360/2762 cut-off events. For 90264/90266 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 19861 event pairs, 89 based on Foata normal form. 3/2760 useless extension candidates. Maximal degree in co-relation 27932. Up to 2267 conditions per place. [2023-08-30 05:25:37,771 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 464 selfloop transitions, 106 changer transitions 5/585 dead transitions. [2023-08-30 05:25:37,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 585 transitions, 14379 flow [2023-08-30 05:25:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:25:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:25:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1626 transitions. [2023-08-30 05:25:37,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124809741248097 [2023-08-30 05:25:37,774 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1626 transitions. [2023-08-30 05:25:37,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1626 transitions. [2023-08-30 05:25:37,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:37,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1626 transitions. [2023-08-30 05:25:37,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 180.66666666666666) internal successors, (1626), 9 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:37,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:37,779 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:37,779 INFO L175 Difference]: Start difference. First operand has 358 places, 538 transitions, 12853 flow. Second operand 9 states and 1626 transitions. [2023-08-30 05:25:37,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 585 transitions, 14379 flow [2023-08-30 05:25:38,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 585 transitions, 14053 flow, removed 133 selfloop flow, removed 4 redundant places. [2023-08-30 05:25:38,677 INFO L231 Difference]: Finished difference. Result has 362 places, 540 transitions, 12885 flow [2023-08-30 05:25:38,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=12543, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12885, PETRI_PLACES=362, PETRI_TRANSITIONS=540} [2023-08-30 05:25:38,678 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 333 predicate places. [2023-08-30 05:25:38,678 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 540 transitions, 12885 flow [2023-08-30 05:25:38,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 175.05555555555554) internal successors, (3151), 18 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:38,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:38,679 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:38,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:38,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-30 05:25:38,879 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:38,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2135435222, now seen corresponding path program 35 times [2023-08-30 05:25:38,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:38,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764959432] [2023-08-30 05:25:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:39,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764959432] [2023-08-30 05:25:39,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764959432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496340275] [2023-08-30 05:25:39,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:25:39,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:39,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:39,269 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:39,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-30 05:25:39,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:25:39,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:39,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:39,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:39,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:39,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496340275] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:39,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:39,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 05:25:39,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959006509] [2023-08-30 05:25:39,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:39,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:25:39,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:25:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:25:39,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:25:39,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 540 transitions, 12885 flow. Second operand has 16 states, 16 states have (on average 175.125) internal successors, (2802), 16 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:39,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:39,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:25:39,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:41,135 INFO L130 PetriNetUnfolder]: 1351/2734 cut-off events. [2023-08-30 05:25:41,135 INFO L131 PetriNetUnfolder]: For 92119/92121 co-relation queries the response was YES. [2023-08-30 05:25:41,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27679 conditions, 2734 events. 1351/2734 cut-off events. For 92119/92121 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 19577 event pairs, 86 based on Foata normal form. 4/2733 useless extension candidates. Maximal degree in co-relation 27553. Up to 2339 conditions per place. [2023-08-30 05:25:41,160 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 475 selfloop transitions, 97 changer transitions 5/587 dead transitions. [2023-08-30 05:25:41,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 587 transitions, 14328 flow [2023-08-30 05:25:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:25:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:25:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1974 transitions. [2023-08-30 05:25:41,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40971357409713577 [2023-08-30 05:25:41,162 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1974 transitions. [2023-08-30 05:25:41,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1974 transitions. [2023-08-30 05:25:41,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:41,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1974 transitions. [2023-08-30 05:25:41,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 179.45454545454547) internal successors, (1974), 11 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:41,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:41,168 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:41,168 INFO L175 Difference]: Start difference. First operand has 362 places, 540 transitions, 12885 flow. Second operand 11 states and 1974 transitions. [2023-08-30 05:25:41,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 587 transitions, 14328 flow [2023-08-30 05:25:41,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 587 transitions, 14019 flow, removed 38 selfloop flow, removed 7 redundant places. [2023-08-30 05:25:41,913 INFO L231 Difference]: Finished difference. Result has 366 places, 545 transitions, 12910 flow [2023-08-30 05:25:41,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=12584, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12910, PETRI_PLACES=366, PETRI_TRANSITIONS=545} [2023-08-30 05:25:41,914 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 337 predicate places. [2023-08-30 05:25:41,914 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 545 transitions, 12910 flow [2023-08-30 05:25:41,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 175.125) internal successors, (2802), 16 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:41,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:41,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:41,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-08-30 05:25:42,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:42,115 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:42,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:42,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2017600142, now seen corresponding path program 36 times [2023-08-30 05:25:42,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:42,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826419010] [2023-08-30 05:25:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:42,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826419010] [2023-08-30 05:25:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826419010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626514014] [2023-08-30 05:25:42,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:25:42,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:42,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:42,502 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:42,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-30 05:25:42,625 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:25:42,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:42,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:42,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:42,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:42,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626514014] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:42,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:42,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2023-08-30 05:25:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406484892] [2023-08-30 05:25:42,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:42,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:25:42,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:25:42,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-08-30 05:25:43,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:25:43,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 545 transitions, 12910 flow. Second operand has 19 states, 19 states have (on average 175.10526315789474) internal successors, (3327), 19 states have internal predecessors, (3327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:43,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:43,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:25:43,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:44,293 INFO L130 PetriNetUnfolder]: 1427/2920 cut-off events. [2023-08-30 05:25:44,293 INFO L131 PetriNetUnfolder]: For 98000/98002 co-relation queries the response was YES. [2023-08-30 05:25:44,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29366 conditions, 2920 events. 1427/2920 cut-off events. For 98000/98002 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 21382 event pairs, 114 based on Foata normal form. 4/2919 useless extension candidates. Maximal degree in co-relation 29240. Up to 2592 conditions per place. [2023-08-30 05:25:44,325 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 515 selfloop transitions, 91 changer transitions 9/625 dead transitions. [2023-08-30 05:25:44,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 625 transitions, 15394 flow [2023-08-30 05:25:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:25:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:25:44,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1619 transitions. [2023-08-30 05:25:44,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41070522577371893 [2023-08-30 05:25:44,327 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1619 transitions. [2023-08-30 05:25:44,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1619 transitions. [2023-08-30 05:25:44,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:44,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1619 transitions. [2023-08-30 05:25:44,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:44,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:44,331 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:44,331 INFO L175 Difference]: Start difference. First operand has 366 places, 545 transitions, 12910 flow. Second operand 9 states and 1619 transitions. [2023-08-30 05:25:44,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 625 transitions, 15394 flow [2023-08-30 05:25:45,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 625 transitions, 15203 flow, removed 20 selfloop flow, removed 8 redundant places. [2023-08-30 05:25:45,147 INFO L231 Difference]: Finished difference. Result has 369 places, 578 transitions, 13779 flow [2023-08-30 05:25:45,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=12727, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13779, PETRI_PLACES=369, PETRI_TRANSITIONS=578} [2023-08-30 05:25:45,148 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 340 predicate places. [2023-08-30 05:25:45,148 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 578 transitions, 13779 flow [2023-08-30 05:25:45,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 175.10526315789474) internal successors, (3327), 19 states have internal predecessors, (3327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:45,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:45,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:45,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-08-30 05:25:45,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:45,350 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:45,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1071783608, now seen corresponding path program 37 times [2023-08-30 05:25:45,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:45,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349056171] [2023-08-30 05:25:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:45,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:45,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:45,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349056171] [2023-08-30 05:25:45,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349056171] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:45,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962990914] [2023-08-30 05:25:45,683 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:25:45,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:45,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:45,684 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:45,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-30 05:25:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:45,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:45,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:45,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:46,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962990914] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:46,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:46,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2023-08-30 05:25:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354277828] [2023-08-30 05:25:46,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:46,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:25:46,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:25:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-08-30 05:25:46,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:25:46,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 578 transitions, 13779 flow. Second operand has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:46,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:46,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:25:46,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:47,372 INFO L130 PetriNetUnfolder]: 1421/2886 cut-off events. [2023-08-30 05:25:47,372 INFO L131 PetriNetUnfolder]: For 98262/98264 co-relation queries the response was YES. [2023-08-30 05:25:47,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29346 conditions, 2886 events. 1421/2886 cut-off events. For 98262/98264 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 20936 event pairs, 115 based on Foata normal form. 4/2885 useless extension candidates. Maximal degree in co-relation 29218. Up to 2592 conditions per place. [2023-08-30 05:25:47,408 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 508 selfloop transitions, 91 changer transitions 6/615 dead transitions. [2023-08-30 05:25:47,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 615 transitions, 15362 flow [2023-08-30 05:25:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:25:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:25:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1440 transitions. [2023-08-30 05:25:47,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.410958904109589 [2023-08-30 05:25:47,410 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1440 transitions. [2023-08-30 05:25:47,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1440 transitions. [2023-08-30 05:25:47,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:47,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1440 transitions. [2023-08-30 05:25:47,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:47,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 438.0) internal successors, (3942), 9 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:47,414 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 438.0) internal successors, (3942), 9 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:47,414 INFO L175 Difference]: Start difference. First operand has 369 places, 578 transitions, 13779 flow. Second operand 8 states and 1440 transitions. [2023-08-30 05:25:47,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 615 transitions, 15362 flow [2023-08-30 05:25:48,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 615 transitions, 15170 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-08-30 05:25:48,473 INFO L231 Difference]: Finished difference. Result has 372 places, 581 transitions, 13947 flow [2023-08-30 05:25:48,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=13593, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13947, PETRI_PLACES=372, PETRI_TRANSITIONS=581} [2023-08-30 05:25:48,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 343 predicate places. [2023-08-30 05:25:48,474 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 581 transitions, 13947 flow [2023-08-30 05:25:48,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 175.0) internal successors, (3325), 19 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:48,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:48,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:48,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-08-30 05:25:48,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-08-30 05:25:48,675 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:48,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:48,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2027114478, now seen corresponding path program 38 times [2023-08-30 05:25:48,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62421577] [2023-08-30 05:25:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:49,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:49,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62421577] [2023-08-30 05:25:49,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62421577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:49,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123519891] [2023-08-30 05:25:49,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:25:49,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:49,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:49,017 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:49,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-30 05:25:49,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:25:49,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:49,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:49,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:49,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123519891] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:49,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:49,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2023-08-30 05:25:49,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549518166] [2023-08-30 05:25:49,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:49,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:25:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:25:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:25:49,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:25:49,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 581 transitions, 13947 flow. Second operand has 16 states, 16 states have (on average 175.3125) internal successors, (2805), 16 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:49,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:49,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:25:49,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:50,605 INFO L130 PetriNetUnfolder]: 1409/2850 cut-off events. [2023-08-30 05:25:50,606 INFO L131 PetriNetUnfolder]: For 98462/98464 co-relation queries the response was YES. [2023-08-30 05:25:50,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29175 conditions, 2850 events. 1409/2850 cut-off events. For 98462/98464 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 20541 event pairs, 118 based on Foata normal form. 4/2849 useless extension candidates. Maximal degree in co-relation 29046. Up to 2641 conditions per place. [2023-08-30 05:25:50,635 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 525 selfloop transitions, 72 changer transitions 7/614 dead transitions. [2023-08-30 05:25:50,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 614 transitions, 15441 flow [2023-08-30 05:25:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:25:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:25:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1610 transitions. [2023-08-30 05:25:50,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40842212075088785 [2023-08-30 05:25:50,637 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1610 transitions. [2023-08-30 05:25:50,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1610 transitions. [2023-08-30 05:25:50,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:50,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1610 transitions. [2023-08-30 05:25:50,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 178.88888888888889) internal successors, (1610), 9 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:50,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:50,640 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:50,640 INFO L175 Difference]: Start difference. First operand has 372 places, 581 transitions, 13947 flow. Second operand 9 states and 1610 transitions. [2023-08-30 05:25:50,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 614 transitions, 15441 flow [2023-08-30 05:25:51,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 614 transitions, 15157 flow, removed 90 selfloop flow, removed 4 redundant places. [2023-08-30 05:25:51,455 INFO L231 Difference]: Finished difference. Result has 378 places, 585 transitions, 14012 flow [2023-08-30 05:25:51,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=13705, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14012, PETRI_PLACES=378, PETRI_TRANSITIONS=585} [2023-08-30 05:25:51,455 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 349 predicate places. [2023-08-30 05:25:51,456 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 585 transitions, 14012 flow [2023-08-30 05:25:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 175.3125) internal successors, (2805), 16 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:51,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:51,456 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:51,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-08-30 05:25:51,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:51,657 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:51,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash -699295512, now seen corresponding path program 39 times [2023-08-30 05:25:51,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:51,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781506754] [2023-08-30 05:25:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:51,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781506754] [2023-08-30 05:25:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781506754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620392034] [2023-08-30 05:25:51,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:25:51,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:51,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:51,993 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:52,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-08-30 05:25:52,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:25:52,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:52,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:52,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:52,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:52,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:52,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620392034] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:52,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:52,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-30 05:25:52,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743108932] [2023-08-30 05:25:52,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:52,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 05:25:52,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 05:25:52,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-08-30 05:25:52,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:25:52,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 585 transitions, 14012 flow. Second operand has 20 states, 20 states have (on average 175.0) internal successors, (3500), 20 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:52,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:52,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:25:52,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:54,052 INFO L130 PetriNetUnfolder]: 1617/3314 cut-off events. [2023-08-30 05:25:54,052 INFO L131 PetriNetUnfolder]: For 118596/118598 co-relation queries the response was YES. [2023-08-30 05:25:54,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33672 conditions, 3314 events. 1617/3314 cut-off events. For 118596/118598 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 24972 event pairs, 131 based on Foata normal form. 6/3315 useless extension candidates. Maximal degree in co-relation 33541. Up to 2721 conditions per place. [2023-08-30 05:25:54,092 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 605 selfloop transitions, 129 changer transitions 15/759 dead transitions. [2023-08-30 05:25:54,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 759 transitions, 18686 flow [2023-08-30 05:25:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:25:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:25:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1985 transitions. [2023-08-30 05:25:54,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119966791199668 [2023-08-30 05:25:54,094 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1985 transitions. [2023-08-30 05:25:54,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1985 transitions. [2023-08-30 05:25:54,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:54,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1985 transitions. [2023-08-30 05:25:54,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 180.45454545454547) internal successors, (1985), 11 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:54,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:54,098 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:54,099 INFO L175 Difference]: Start difference. First operand has 378 places, 585 transitions, 14012 flow. Second operand 11 states and 1985 transitions. [2023-08-30 05:25:54,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 759 transitions, 18686 flow [2023-08-30 05:25:55,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 759 transitions, 18442 flow, removed 44 selfloop flow, removed 7 redundant places. [2023-08-30 05:25:55,160 INFO L231 Difference]: Finished difference. Result has 389 places, 668 transitions, 16312 flow [2023-08-30 05:25:55,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=13782, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16312, PETRI_PLACES=389, PETRI_TRANSITIONS=668} [2023-08-30 05:25:55,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 360 predicate places. [2023-08-30 05:25:55,161 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 668 transitions, 16312 flow [2023-08-30 05:25:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 175.0) internal successors, (3500), 20 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:55,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:55,162 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:55,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:55,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-08-30 05:25:55,363 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:55,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash -911555066, now seen corresponding path program 40 times [2023-08-30 05:25:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737634854] [2023-08-30 05:25:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737634854] [2023-08-30 05:25:55,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737634854] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061595239] [2023-08-30 05:25:55,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:25:55,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:55,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:55,738 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:55,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-08-30 05:25:55,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:25:55,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:55,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:55,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:55,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:56,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061595239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:56,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:56,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-08-30 05:25:56,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275809308] [2023-08-30 05:25:56,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:56,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:25:56,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:56,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:25:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:25:56,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:25:56,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 668 transitions, 16312 flow. Second operand has 17 states, 17 states have (on average 175.2941176470588) internal successors, (2980), 17 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:56,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:56,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:25:56,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:57,751 INFO L130 PetriNetUnfolder]: 1741/3587 cut-off events. [2023-08-30 05:25:57,751 INFO L131 PetriNetUnfolder]: For 134593/134595 co-relation queries the response was YES. [2023-08-30 05:25:57,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37136 conditions, 3587 events. 1741/3587 cut-off events. For 134593/134595 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 27619 event pairs, 141 based on Foata normal form. 5/3587 useless extension candidates. Maximal degree in co-relation 36997. Up to 3074 conditions per place. [2023-08-30 05:25:57,797 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 646 selfloop transitions, 113 changer transitions 7/776 dead transitions. [2023-08-30 05:25:57,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 776 transitions, 19812 flow [2023-08-30 05:25:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:25:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:25:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1624 transitions. [2023-08-30 05:25:57,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119736174530695 [2023-08-30 05:25:57,799 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1624 transitions. [2023-08-30 05:25:57,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1624 transitions. [2023-08-30 05:25:57,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:57,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1624 transitions. [2023-08-30 05:25:57,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 180.44444444444446) internal successors, (1624), 9 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:57,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:57,804 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:57,804 INFO L175 Difference]: Start difference. First operand has 389 places, 668 transitions, 16312 flow. Second operand 9 states and 1624 transitions. [2023-08-30 05:25:57,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 776 transitions, 19812 flow [2023-08-30 05:25:59,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 776 transitions, 19397 flow, removed 206 selfloop flow, removed 3 redundant places. [2023-08-30 05:25:59,149 INFO L231 Difference]: Finished difference. Result has 396 places, 713 transitions, 17482 flow [2023-08-30 05:25:59,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=15917, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17482, PETRI_PLACES=396, PETRI_TRANSITIONS=713} [2023-08-30 05:25:59,151 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 367 predicate places. [2023-08-30 05:25:59,151 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 713 transitions, 17482 flow [2023-08-30 05:25:59,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 175.2941176470588) internal successors, (2980), 17 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:59,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:59,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:59,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-08-30 05:25:59,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:59,357 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:25:59,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:59,357 INFO L85 PathProgramCache]: Analyzing trace with hash 506288034, now seen corresponding path program 41 times [2023-08-30 05:25:59,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:59,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074630635] [2023-08-30 05:25:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:59,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:59,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:59,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074630635] [2023-08-30 05:25:59,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074630635] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:59,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905886788] [2023-08-30 05:25:59,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:25:59,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:59,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:59,718 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:25:59,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-08-30 05:25:59,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:25:59,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:59,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:25:59,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:59,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:00,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905886788] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:00,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:00,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 05:26:00,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824014075] [2023-08-30 05:26:00,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:00,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:26:00,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:00,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:26:00,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-08-30 05:26:00,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:26:00,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 713 transitions, 17482 flow. Second operand has 19 states, 19 states have (on average 174.94736842105263) internal successors, (3324), 19 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:00,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:00,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:26:00,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:01,839 INFO L130 PetriNetUnfolder]: 1736/3551 cut-off events. [2023-08-30 05:26:01,839 INFO L131 PetriNetUnfolder]: For 135962/135964 co-relation queries the response was YES. [2023-08-30 05:26:01,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37173 conditions, 3551 events. 1736/3551 cut-off events. For 135962/135964 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 27070 event pairs, 159 based on Foata normal form. 6/3552 useless extension candidates. Maximal degree in co-relation 37032. Up to 3009 conditions per place. [2023-08-30 05:26:01,881 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 638 selfloop transitions, 125 changer transitions 16/789 dead transitions. [2023-08-30 05:26:01,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 789 transitions, 20114 flow [2023-08-30 05:26:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:26:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:26:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1977 transitions. [2023-08-30 05:26:01,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41033623910336237 [2023-08-30 05:26:01,883 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1977 transitions. [2023-08-30 05:26:01,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1977 transitions. [2023-08-30 05:26:01,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:01,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1977 transitions. [2023-08-30 05:26:01,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 179.72727272727272) internal successors, (1977), 11 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:01,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:01,886 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:01,887 INFO L175 Difference]: Start difference. First operand has 396 places, 713 transitions, 17482 flow. Second operand 11 states and 1977 transitions. [2023-08-30 05:26:01,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 789 transitions, 20114 flow [2023-08-30 05:26:03,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 789 transitions, 19771 flow, removed 109 selfloop flow, removed 4 redundant places. [2023-08-30 05:26:03,251 INFO L231 Difference]: Finished difference. Result has 405 places, 710 transitions, 17463 flow [2023-08-30 05:26:03,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=17149, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17463, PETRI_PLACES=405, PETRI_TRANSITIONS=710} [2023-08-30 05:26:03,252 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 376 predicate places. [2023-08-30 05:26:03,252 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 710 transitions, 17463 flow [2023-08-30 05:26:03,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 174.94736842105263) internal successors, (3324), 19 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:03,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:03,253 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:03,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-08-30 05:26:03,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:03,453 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:03,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:03,454 INFO L85 PathProgramCache]: Analyzing trace with hash 679729750, now seen corresponding path program 42 times [2023-08-30 05:26:03,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:03,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128384341] [2023-08-30 05:26:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:03,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:03,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128384341] [2023-08-30 05:26:03,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128384341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:03,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642124031] [2023-08-30 05:26:03,760 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:26:03,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:03,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:03,765 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:03,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-08-30 05:26:03,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 05:26:03,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:03,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:26:03,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:04,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:04,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642124031] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:04,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:04,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 05:26:04,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638635858] [2023-08-30 05:26:04,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:04,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:26:04,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:04,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:26:04,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:26:04,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:26:04,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 710 transitions, 17463 flow. Second operand has 16 states, 16 states have (on average 175.25) internal successors, (2804), 16 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:04,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:04,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:26:04,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:05,786 INFO L130 PetriNetUnfolder]: 1720/3507 cut-off events. [2023-08-30 05:26:05,786 INFO L131 PetriNetUnfolder]: For 133418/133420 co-relation queries the response was YES. [2023-08-30 05:26:05,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36798 conditions, 3507 events. 1720/3507 cut-off events. For 133418/133420 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 26566 event pairs, 157 based on Foata normal form. 6/3508 useless extension candidates. Maximal degree in co-relation 36654. Up to 3090 conditions per place. [2023-08-30 05:26:05,831 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 639 selfloop transitions, 122 changer transitions 15/786 dead transitions. [2023-08-30 05:26:05,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 786 transitions, 20093 flow [2023-08-30 05:26:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:26:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:26:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2151 transitions. [2023-08-30 05:26:05,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092465753424658 [2023-08-30 05:26:05,833 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2151 transitions. [2023-08-30 05:26:05,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2151 transitions. [2023-08-30 05:26:05,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:05,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2151 transitions. [2023-08-30 05:26:05,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.25) internal successors, (2151), 12 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:05,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:05,837 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:05,837 INFO L175 Difference]: Start difference. First operand has 405 places, 710 transitions, 17463 flow. Second operand 12 states and 2151 transitions. [2023-08-30 05:26:05,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 786 transitions, 20093 flow [2023-08-30 05:26:07,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 786 transitions, 19635 flow, removed 126 selfloop flow, removed 7 redundant places. [2023-08-30 05:26:07,203 INFO L231 Difference]: Finished difference. Result has 410 places, 723 transitions, 17705 flow [2023-08-30 05:26:07,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=17085, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17705, PETRI_PLACES=410, PETRI_TRANSITIONS=723} [2023-08-30 05:26:07,204 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 381 predicate places. [2023-08-30 05:26:07,204 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 723 transitions, 17705 flow [2023-08-30 05:26:07,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 175.25) internal successors, (2804), 16 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:07,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:07,204 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:07,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-08-30 05:26:07,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-08-30 05:26:07,409 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:07,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1590629470, now seen corresponding path program 43 times [2023-08-30 05:26:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:07,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499315066] [2023-08-30 05:26:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499315066] [2023-08-30 05:26:07,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499315066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30533863] [2023-08-30 05:26:07,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:26:07,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:07,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:07,766 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:07,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-08-30 05:26:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:07,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:26:07,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:07,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:08,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30533863] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:08,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:08,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 05:26:08,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867717493] [2023-08-30 05:26:08,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:08,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:26:08,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:08,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:26:08,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:26:08,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:26:08,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 723 transitions, 17705 flow. Second operand has 16 states, 16 states have (on average 175.25) internal successors, (2804), 16 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:08,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:08,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:26:08,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:09,797 INFO L130 PetriNetUnfolder]: 1710/3460 cut-off events. [2023-08-30 05:26:09,797 INFO L131 PetriNetUnfolder]: For 127078/127080 co-relation queries the response was YES. [2023-08-30 05:26:09,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36257 conditions, 3460 events. 1710/3460 cut-off events. For 127078/127080 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 25890 event pairs, 159 based on Foata normal form. 3/3458 useless extension candidates. Maximal degree in co-relation 36110. Up to 3167 conditions per place. [2023-08-30 05:26:09,840 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 654 selfloop transitions, 102 changer transitions 5/771 dead transitions. [2023-08-30 05:26:09,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 771 transitions, 19711 flow [2023-08-30 05:26:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:26:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:26:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1967 transitions. [2023-08-30 05:26:09,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082606890826069 [2023-08-30 05:26:09,841 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1967 transitions. [2023-08-30 05:26:09,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1967 transitions. [2023-08-30 05:26:09,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:09,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1967 transitions. [2023-08-30 05:26:09,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 178.8181818181818) internal successors, (1967), 11 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:09,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:09,845 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 438.0) internal successors, (5256), 12 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:09,845 INFO L175 Difference]: Start difference. First operand has 410 places, 723 transitions, 17705 flow. Second operand 11 states and 1967 transitions. [2023-08-30 05:26:09,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 771 transitions, 19711 flow [2023-08-30 05:26:11,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 771 transitions, 19433 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-30 05:26:11,111 INFO L231 Difference]: Finished difference. Result has 416 places, 735 transitions, 17991 flow [2023-08-30 05:26:11,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=17441, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17991, PETRI_PLACES=416, PETRI_TRANSITIONS=735} [2023-08-30 05:26:11,112 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 387 predicate places. [2023-08-30 05:26:11,112 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 735 transitions, 17991 flow [2023-08-30 05:26:11,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 175.25) internal successors, (2804), 16 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:11,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:11,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:11,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-08-30 05:26:11,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-08-30 05:26:11,313 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:11,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1883713578, now seen corresponding path program 44 times [2023-08-30 05:26:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:11,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553834864] [2023-08-30 05:26:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:11,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553834864] [2023-08-30 05:26:11,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553834864] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496986586] [2023-08-30 05:26:11,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:26:11,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:11,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:11,613 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:11,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-08-30 05:26:11,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:26:11,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:11,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:26:11,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:11,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:12,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496986586] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:12,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:12,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-08-30 05:26:12,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534926371] [2023-08-30 05:26:12,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:12,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:26:12,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:12,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:26:12,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:26:12,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:26:12,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 735 transitions, 17991 flow. Second operand has 17 states, 17 states have (on average 175.11764705882354) internal successors, (2977), 17 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:12,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:12,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:26:12,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:13,581 INFO L130 PetriNetUnfolder]: 1707/3437 cut-off events. [2023-08-30 05:26:13,581 INFO L131 PetriNetUnfolder]: For 126696/126698 co-relation queries the response was YES. [2023-08-30 05:26:13,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36081 conditions, 3437 events. 1707/3437 cut-off events. For 126696/126698 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 25593 event pairs, 136 based on Foata normal form. 5/3437 useless extension candidates. Maximal degree in co-relation 35933. Up to 3136 conditions per place. [2023-08-30 05:26:13,624 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 671 selfloop transitions, 81 changer transitions 7/769 dead transitions. [2023-08-30 05:26:13,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 769 transitions, 19806 flow [2023-08-30 05:26:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:26:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:26:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1611 transitions. [2023-08-30 05:26:13,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.408675799086758 [2023-08-30 05:26:13,626 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1611 transitions. [2023-08-30 05:26:13,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1611 transitions. [2023-08-30 05:26:13,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:13,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1611 transitions. [2023-08-30 05:26:13,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.0) internal successors, (1611), 9 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:13,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:13,629 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:13,629 INFO L175 Difference]: Start difference. First operand has 416 places, 735 transitions, 17991 flow. Second operand 9 states and 1611 transitions. [2023-08-30 05:26:13,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 769 transitions, 19806 flow [2023-08-30 05:26:14,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 769 transitions, 19525 flow, removed 58 selfloop flow, removed 7 redundant places. [2023-08-30 05:26:14,961 INFO L231 Difference]: Finished difference. Result has 418 places, 738 transitions, 18035 flow [2023-08-30 05:26:14,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=17714, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18035, PETRI_PLACES=418, PETRI_TRANSITIONS=738} [2023-08-30 05:26:14,962 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 389 predicate places. [2023-08-30 05:26:14,962 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 738 transitions, 18035 flow [2023-08-30 05:26:14,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 175.11764705882354) internal successors, (2977), 17 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:14,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:14,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:14,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-08-30 05:26:15,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-08-30 05:26:15,163 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:15,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:15,164 INFO L85 PathProgramCache]: Analyzing trace with hash 294028480, now seen corresponding path program 45 times [2023-08-30 05:26:15,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:15,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100905484] [2023-08-30 05:26:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:15,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100905484] [2023-08-30 05:26:15,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100905484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691802445] [2023-08-30 05:26:15,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:26:15,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:15,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:15,410 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:15,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-08-30 05:26:15,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:26:15,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:15,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2023-08-30 05:26:15,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:15,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:15,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691802445] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:15,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:15,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-08-30 05:26:15,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843361680] [2023-08-30 05:26:15,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:15,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:26:15,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:15,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:26:15,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:26:16,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 438 [2023-08-30 05:26:16,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 738 transitions, 18035 flow. Second operand has 17 states, 17 states have (on average 175.11764705882354) internal successors, (2977), 17 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:16,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:16,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 438 [2023-08-30 05:26:16,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:17,277 INFO L130 PetriNetUnfolder]: 1692/3392 cut-off events. [2023-08-30 05:26:17,278 INFO L131 PetriNetUnfolder]: For 126496/126498 co-relation queries the response was YES. [2023-08-30 05:26:17,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35700 conditions, 3392 events. 1692/3392 cut-off events. For 126496/126498 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 25088 event pairs, 124 based on Foata normal form. 5/3392 useless extension candidates. Maximal degree in co-relation 35551. Up to 3025 conditions per place. [2023-08-30 05:26:17,324 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 652 selfloop transitions, 102 changer transitions 9/773 dead transitions. [2023-08-30 05:26:17,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 773 transitions, 19797 flow [2023-08-30 05:26:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:26:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:26:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1616 transitions. [2023-08-30 05:26:17,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40994419076610855 [2023-08-30 05:26:17,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1616 transitions. [2023-08-30 05:26:17,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1616 transitions. [2023-08-30 05:26:17,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:17,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1616 transitions. [2023-08-30 05:26:17,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.55555555555554) internal successors, (1616), 9 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:17,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:17,329 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:17,329 INFO L175 Difference]: Start difference. First operand has 418 places, 738 transitions, 18035 flow. Second operand 9 states and 1616 transitions. [2023-08-30 05:26:17,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 773 transitions, 19797 flow [2023-08-30 05:26:18,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 773 transitions, 19481 flow, removed 74 selfloop flow, removed 7 redundant places. [2023-08-30 05:26:18,636 INFO L231 Difference]: Finished difference. Result has 420 places, 738 transitions, 17995 flow [2023-08-30 05:26:18,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=17723, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17995, PETRI_PLACES=420, PETRI_TRANSITIONS=738} [2023-08-30 05:26:18,637 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 391 predicate places. [2023-08-30 05:26:18,637 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 738 transitions, 17995 flow [2023-08-30 05:26:18,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 175.11764705882354) internal successors, (2977), 17 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:18,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:18,637 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:18,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-08-30 05:26:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:18,838 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:18,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2026140096, now seen corresponding path program 46 times [2023-08-30 05:26:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:18,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906752232] [2023-08-30 05:26:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:18,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906752232] [2023-08-30 05:26:18,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906752232] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847539357] [2023-08-30 05:26:18,914 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:26:18,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:18,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:18,915 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:18,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-08-30 05:26:19,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:26:19,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:19,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:26:19,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:19,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:19,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847539357] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:19,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:19,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-30 05:26:19,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072920547] [2023-08-30 05:26:19,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:19,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:26:19,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:26:19,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:26:19,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:26:19,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 738 transitions, 17995 flow. Second operand has 14 states, 14 states have (on average 183.07142857142858) internal successors, (2563), 14 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:19,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:19,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:26:19,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:20,871 INFO L130 PetriNetUnfolder]: 2248/4521 cut-off events. [2023-08-30 05:26:20,871 INFO L131 PetriNetUnfolder]: For 176783/176783 co-relation queries the response was YES. [2023-08-30 05:26:20,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47225 conditions, 4521 events. 2248/4521 cut-off events. For 176783/176783 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 35174 event pairs, 194 based on Foata normal form. 36/4557 useless extension candidates. Maximal degree in co-relation 47075. Up to 2645 conditions per place. [2023-08-30 05:26:20,921 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 751 selfloop transitions, 266 changer transitions 0/1017 dead transitions. [2023-08-30 05:26:20,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 1017 transitions, 26523 flow [2023-08-30 05:26:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:26:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:26:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1695 transitions. [2023-08-30 05:26:20,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4299847792998478 [2023-08-30 05:26:20,923 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1695 transitions. [2023-08-30 05:26:20,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1695 transitions. [2023-08-30 05:26:20,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:20,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1695 transitions. [2023-08-30 05:26:20,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 188.33333333333334) internal successors, (1695), 9 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:20,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:20,926 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:20,926 INFO L175 Difference]: Start difference. First operand has 420 places, 738 transitions, 17995 flow. Second operand 9 states and 1695 transitions. [2023-08-30 05:26:20,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 1017 transitions, 26523 flow [2023-08-30 05:26:22,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1017 transitions, 26282 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-08-30 05:26:22,603 INFO L231 Difference]: Finished difference. Result has 426 places, 855 transitions, 21922 flow [2023-08-30 05:26:22,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=17811, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21922, PETRI_PLACES=426, PETRI_TRANSITIONS=855} [2023-08-30 05:26:22,604 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 397 predicate places. [2023-08-30 05:26:22,604 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 855 transitions, 21922 flow [2023-08-30 05:26:22,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 183.07142857142858) internal successors, (2563), 14 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:22,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:22,605 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:22,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-08-30 05:26:22,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2023-08-30 05:26:22,805 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:22,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2007048997, now seen corresponding path program 47 times [2023-08-30 05:26:22,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:22,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910298414] [2023-08-30 05:26:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:22,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910298414] [2023-08-30 05:26:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910298414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028444568] [2023-08-30 05:26:22,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:26:22,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:22,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:22,877 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:22,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-08-30 05:26:23,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:26:23,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:23,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:26:23,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:23,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:23,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028444568] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:23,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:23,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-30 05:26:23,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101438845] [2023-08-30 05:26:23,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:23,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:26:23,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:26:23,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:26:23,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:26:23,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 855 transitions, 21922 flow. Second operand has 14 states, 14 states have (on average 183.07142857142858) internal successors, (2563), 14 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:23,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:23,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:26:23,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:25,015 INFO L130 PetriNetUnfolder]: 2253/4538 cut-off events. [2023-08-30 05:26:25,016 INFO L131 PetriNetUnfolder]: For 184103/184103 co-relation queries the response was YES. [2023-08-30 05:26:25,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48409 conditions, 4538 events. 2253/4538 cut-off events. For 184103/184103 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 35184 event pairs, 376 based on Foata normal form. 4/4542 useless extension candidates. Maximal degree in co-relation 48255. Up to 1744 conditions per place. [2023-08-30 05:26:25,077 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 603 selfloop transitions, 403 changer transitions 15/1021 dead transitions. [2023-08-30 05:26:25,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1021 transitions, 27454 flow [2023-08-30 05:26:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 05:26:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 05:26:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2609 transitions. [2023-08-30 05:26:25,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254729288975864 [2023-08-30 05:26:25,079 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2609 transitions. [2023-08-30 05:26:25,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2609 transitions. [2023-08-30 05:26:25,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:25,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2609 transitions. [2023-08-30 05:26:25,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 186.35714285714286) internal successors, (2609), 14 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:25,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:25,084 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:25,084 INFO L175 Difference]: Start difference. First operand has 426 places, 855 transitions, 21922 flow. Second operand 14 states and 2609 transitions. [2023-08-30 05:26:25,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1021 transitions, 27454 flow [2023-08-30 05:26:26,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1021 transitions, 27225 flow, removed 46 selfloop flow, removed 3 redundant places. [2023-08-30 05:26:27,007 INFO L231 Difference]: Finished difference. Result has 441 places, 919 transitions, 24667 flow [2023-08-30 05:26:27,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=21693, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24667, PETRI_PLACES=441, PETRI_TRANSITIONS=919} [2023-08-30 05:26:27,008 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 412 predicate places. [2023-08-30 05:26:27,008 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 919 transitions, 24667 flow [2023-08-30 05:26:27,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 183.07142857142858) internal successors, (2563), 14 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:27,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:27,009 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:27,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-08-30 05:26:27,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:27,209 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:27,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1466421474, now seen corresponding path program 48 times [2023-08-30 05:26:27,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:27,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011705738] [2023-08-30 05:26:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:27,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:27,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:27,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011705738] [2023-08-30 05:26:27,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011705738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:27,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838197372] [2023-08-30 05:26:27,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:26:27,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:27,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:27,291 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:27,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-08-30 05:26:27,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 05:26:27,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:27,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:26:27,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:27,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:27,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838197372] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:27,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:27,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-30 05:26:27,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800998382] [2023-08-30 05:26:27,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:27,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:26:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:27,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:26:27,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:26:27,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:26:27,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 919 transitions, 24667 flow. Second operand has 15 states, 15 states have (on average 183.06666666666666) internal successors, (2746), 15 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:27,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:27,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:26:27,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:29,767 INFO L130 PetriNetUnfolder]: 2489/5028 cut-off events. [2023-08-30 05:26:29,767 INFO L131 PetriNetUnfolder]: For 238585/238585 co-relation queries the response was YES. [2023-08-30 05:26:29,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55901 conditions, 5028 events. 2489/5028 cut-off events. For 238585/238585 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 40192 event pairs, 176 based on Foata normal form. 62/5090 useless extension candidates. Maximal degree in co-relation 55742. Up to 3409 conditions per place. [2023-08-30 05:26:29,837 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 788 selfloop transitions, 311 changer transitions 0/1099 dead transitions. [2023-08-30 05:26:29,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 1099 transitions, 30569 flow [2023-08-30 05:26:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 05:26:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 05:26:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4127 transitions. [2023-08-30 05:26:29,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42828974678289744 [2023-08-30 05:26:29,840 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4127 transitions. [2023-08-30 05:26:29,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4127 transitions. [2023-08-30 05:26:29,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:29,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4127 transitions. [2023-08-30 05:26:29,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 187.5909090909091) internal successors, (4127), 22 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:29,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 438.0) internal successors, (10074), 23 states have internal predecessors, (10074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:29,847 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 438.0) internal successors, (10074), 23 states have internal predecessors, (10074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:29,847 INFO L175 Difference]: Start difference. First operand has 441 places, 919 transitions, 24667 flow. Second operand 22 states and 4127 transitions. [2023-08-30 05:26:29,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 1099 transitions, 30569 flow [2023-08-30 05:26:32,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1099 transitions, 29671 flow, removed 258 selfloop flow, removed 8 redundant places. [2023-08-30 05:26:32,353 INFO L231 Difference]: Finished difference. Result has 460 places, 995 transitions, 26815 flow [2023-08-30 05:26:32,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=23780, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=26815, PETRI_PLACES=460, PETRI_TRANSITIONS=995} [2023-08-30 05:26:32,355 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 431 predicate places. [2023-08-30 05:26:32,355 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 995 transitions, 26815 flow [2023-08-30 05:26:32,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 183.06666666666666) internal successors, (2746), 15 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:32,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:32,356 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:32,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-08-30 05:26:32,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:32,561 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:32,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 335477113, now seen corresponding path program 49 times [2023-08-30 05:26:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257056464] [2023-08-30 05:26:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:32,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257056464] [2023-08-30 05:26:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257056464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465412104] [2023-08-30 05:26:32,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:26:32,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:32,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:32,628 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:32,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-08-30 05:26:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:32,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:26:32,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:32,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:32,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465412104] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:32,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:32,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-30 05:26:32,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558901310] [2023-08-30 05:26:32,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:32,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:26:32,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:26:32,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:26:32,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:26:32,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 995 transitions, 26815 flow. Second operand has 16 states, 16 states have (on average 182.75) internal successors, (2924), 16 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:32,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:32,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:26:32,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:35,547 INFO L130 PetriNetUnfolder]: 2497/5086 cut-off events. [2023-08-30 05:26:35,548 INFO L131 PetriNetUnfolder]: For 243454/243454 co-relation queries the response was YES. [2023-08-30 05:26:35,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57438 conditions, 5086 events. 2497/5086 cut-off events. For 243454/243454 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 40971 event pairs, 410 based on Foata normal form. 24/5110 useless extension candidates. Maximal degree in co-relation 57272. Up to 2082 conditions per place. [2023-08-30 05:26:35,624 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 650 selfloop transitions, 473 changer transitions 12/1135 dead transitions. [2023-08-30 05:26:35,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 1135 transitions, 31289 flow [2023-08-30 05:26:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 05:26:35,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 05:26:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4837 transitions. [2023-08-30 05:26:35,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42474534597822267 [2023-08-30 05:26:35,627 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4837 transitions. [2023-08-30 05:26:35,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4837 transitions. [2023-08-30 05:26:35,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:35,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4837 transitions. [2023-08-30 05:26:35,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 186.03846153846155) internal successors, (4837), 26 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:35,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 438.0) internal successors, (11826), 27 states have internal predecessors, (11826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:35,637 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 438.0) internal successors, (11826), 27 states have internal predecessors, (11826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:35,637 INFO L175 Difference]: Start difference. First operand has 460 places, 995 transitions, 26815 flow. Second operand 26 states and 4837 transitions. [2023-08-30 05:26:35,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 1135 transitions, 31289 flow [2023-08-30 05:26:38,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 1135 transitions, 30336 flow, removed 338 selfloop flow, removed 11 redundant places. [2023-08-30 05:26:38,313 INFO L231 Difference]: Finished difference. Result has 479 places, 1008 transitions, 27451 flow [2023-08-30 05:26:38,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=25837, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=27451, PETRI_PLACES=479, PETRI_TRANSITIONS=1008} [2023-08-30 05:26:38,314 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 450 predicate places. [2023-08-30 05:26:38,315 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 1008 transitions, 27451 flow [2023-08-30 05:26:38,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 182.75) internal successors, (2924), 16 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:38,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:38,315 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:38,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-08-30 05:26:38,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:38,521 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:38,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:38,522 INFO L85 PathProgramCache]: Analyzing trace with hash -512809607, now seen corresponding path program 50 times [2023-08-30 05:26:38,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:38,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070074520] [2023-08-30 05:26:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:38,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:38,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070074520] [2023-08-30 05:26:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070074520] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591436788] [2023-08-30 05:26:38,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:26:38,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:38,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:38,601 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:38,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-08-30 05:26:38,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:26:38,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:38,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:26:38,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:38,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591436788] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:38,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:38,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-30 05:26:38,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226496601] [2023-08-30 05:26:38,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:38,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:26:38,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:38,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:26:38,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:26:38,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:26:38,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1008 transitions, 27451 flow. Second operand has 15 states, 15 states have (on average 182.8) internal successors, (2742), 15 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:38,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:38,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:26:38,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:41,605 INFO L130 PetriNetUnfolder]: 2844/5787 cut-off events. [2023-08-30 05:26:41,605 INFO L131 PetriNetUnfolder]: For 317521/317521 co-relation queries the response was YES. [2023-08-30 05:26:41,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67123 conditions, 5787 events. 2844/5787 cut-off events. For 317521/317521 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 47639 event pairs, 351 based on Foata normal form. 64/5851 useless extension candidates. Maximal degree in co-relation 66954. Up to 1725 conditions per place. [2023-08-30 05:26:41,690 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 672 selfloop transitions, 608 changer transitions 8/1288 dead transitions. [2023-08-30 05:26:41,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1288 transitions, 35871 flow [2023-08-30 05:26:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-30 05:26:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-30 05:26:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5781 transitions. [2023-08-30 05:26:41,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257622624834291 [2023-08-30 05:26:41,693 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5781 transitions. [2023-08-30 05:26:41,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5781 transitions. [2023-08-30 05:26:41,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:41,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5781 transitions. [2023-08-30 05:26:41,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 186.48387096774192) internal successors, (5781), 31 states have internal predecessors, (5781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:41,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 438.0) internal successors, (14016), 32 states have internal predecessors, (14016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:41,703 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 438.0) internal successors, (14016), 32 states have internal predecessors, (14016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:41,703 INFO L175 Difference]: Start difference. First operand has 479 places, 1008 transitions, 27451 flow. Second operand 31 states and 5781 transitions. [2023-08-30 05:26:41,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1288 transitions, 35871 flow [2023-08-30 05:26:44,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1288 transitions, 35139 flow, removed 136 selfloop flow, removed 11 redundant places. [2023-08-30 05:26:44,954 INFO L231 Difference]: Finished difference. Result has 503 places, 1114 transitions, 31841 flow [2023-08-30 05:26:44,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=26241, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=990, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=31841, PETRI_PLACES=503, PETRI_TRANSITIONS=1114} [2023-08-30 05:26:44,955 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 474 predicate places. [2023-08-30 05:26:44,955 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 1114 transitions, 31841 flow [2023-08-30 05:26:44,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 182.8) internal successors, (2742), 15 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:44,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:44,956 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:44,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-08-30 05:26:45,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:45,156 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:45,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1490593063, now seen corresponding path program 51 times [2023-08-30 05:26:45,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:45,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767494619] [2023-08-30 05:26:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:45,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:45,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:45,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767494619] [2023-08-30 05:26:45,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767494619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:45,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453360518] [2023-08-30 05:26:45,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:26:45,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:45,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:45,226 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:45,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-08-30 05:26:45,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:26:45,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:45,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:26:45,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:45,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:45,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453360518] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:45,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:45,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-30 05:26:45,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981330350] [2023-08-30 05:26:45,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:45,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:26:45,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:45,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:26:45,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:26:45,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:26:45,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 1114 transitions, 31841 flow. Second operand has 15 states, 15 states have (on average 182.93333333333334) internal successors, (2744), 15 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:45,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:45,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:26:45,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:48,621 INFO L130 PetriNetUnfolder]: 2972/6033 cut-off events. [2023-08-30 05:26:48,622 INFO L131 PetriNetUnfolder]: For 371413/371413 co-relation queries the response was YES. [2023-08-30 05:26:48,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72866 conditions, 6033 events. 2972/6033 cut-off events. For 371413/371413 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 49722 event pairs, 417 based on Foata normal form. 28/6061 useless extension candidates. Maximal degree in co-relation 72690. Up to 2145 conditions per place. [2023-08-30 05:26:48,712 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 716 selfloop transitions, 569 changer transitions 14/1299 dead transitions. [2023-08-30 05:26:48,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1299 transitions, 38446 flow [2023-08-30 05:26:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 05:26:48,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 05:26:48,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5028 transitions. [2023-08-30 05:26:48,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42516489091831555 [2023-08-30 05:26:48,715 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5028 transitions. [2023-08-30 05:26:48,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5028 transitions. [2023-08-30 05:26:48,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:48,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5028 transitions. [2023-08-30 05:26:48,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 186.22222222222223) internal successors, (5028), 27 states have internal predecessors, (5028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:48,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 438.0) internal successors, (12264), 28 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:48,723 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 438.0) internal successors, (12264), 28 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:48,724 INFO L175 Difference]: Start difference. First operand has 503 places, 1114 transitions, 31841 flow. Second operand 27 states and 5028 transitions. [2023-08-30 05:26:48,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1299 transitions, 38446 flow [2023-08-30 05:26:53,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 1299 transitions, 36485 flow, removed 780 selfloop flow, removed 18 redundant places. [2023-08-30 05:26:53,113 INFO L231 Difference]: Finished difference. Result has 515 places, 1141 transitions, 32880 flow [2023-08-30 05:26:53,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=30234, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=526, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=32880, PETRI_PLACES=515, PETRI_TRANSITIONS=1141} [2023-08-30 05:26:53,115 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 486 predicate places. [2023-08-30 05:26:53,115 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 1141 transitions, 32880 flow [2023-08-30 05:26:53,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 182.93333333333334) internal successors, (2744), 15 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:53,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:53,116 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:53,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-08-30 05:26:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-08-30 05:26:53,321 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:26:53,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash -522323943, now seen corresponding path program 52 times [2023-08-30 05:26:53,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:53,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316869146] [2023-08-30 05:26:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:53,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316869146] [2023-08-30 05:26:53,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316869146] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113314169] [2023-08-30 05:26:53,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:26:53,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:53,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:53,385 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:26:53,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-08-30 05:26:53,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:26:53,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:53,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:26:53,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:53,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:26:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113314169] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:53,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:53,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-30 05:26:53,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536998153] [2023-08-30 05:26:53,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:53,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:26:53,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:26:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:26:53,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:26:53,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1141 transitions, 32880 flow. Second operand has 15 states, 15 states have (on average 182.8) internal successors, (2742), 15 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:53,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:53,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:26:53,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:57,157 INFO L130 PetriNetUnfolder]: 2957/6050 cut-off events. [2023-08-30 05:26:57,157 INFO L131 PetriNetUnfolder]: For 349447/349447 co-relation queries the response was YES. [2023-08-30 05:26:57,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71391 conditions, 6050 events. 2957/6050 cut-off events. For 349447/349447 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 50185 event pairs, 562 based on Foata normal form. 36/6086 useless extension candidates. Maximal degree in co-relation 71210. Up to 2754 conditions per place. [2023-08-30 05:26:57,253 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 777 selfloop transitions, 492 changer transitions 1/1270 dead transitions. [2023-08-30 05:26:57,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1270 transitions, 37681 flow [2023-08-30 05:26:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 05:26:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 05:26:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4106 transitions. [2023-08-30 05:26:57,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261104192611042 [2023-08-30 05:26:57,260 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4106 transitions. [2023-08-30 05:26:57,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4106 transitions. [2023-08-30 05:26:57,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:57,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4106 transitions. [2023-08-30 05:26:57,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 186.63636363636363) internal successors, (4106), 22 states have internal predecessors, (4106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:57,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 438.0) internal successors, (10074), 23 states have internal predecessors, (10074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:57,268 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 438.0) internal successors, (10074), 23 states have internal predecessors, (10074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:57,268 INFO L175 Difference]: Start difference. First operand has 515 places, 1141 transitions, 32880 flow. Second operand 22 states and 4106 transitions. [2023-08-30 05:26:57,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1270 transitions, 37681 flow [2023-08-30 05:27:01,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 1270 transitions, 36706 flow, removed 55 selfloop flow, removed 21 redundant places. [2023-08-30 05:27:01,512 INFO L231 Difference]: Finished difference. Result has 515 places, 1157 transitions, 33599 flow [2023-08-30 05:27:01,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=31537, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=33599, PETRI_PLACES=515, PETRI_TRANSITIONS=1157} [2023-08-30 05:27:01,513 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 486 predicate places. [2023-08-30 05:27:01,514 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 1157 transitions, 33599 flow [2023-08-30 05:27:01,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 182.8) internal successors, (2742), 15 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:01,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:01,514 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:01,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-08-30 05:27:01,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-08-30 05:27:01,721 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:27:01,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash 538621454, now seen corresponding path program 53 times [2023-08-30 05:27:01,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:01,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039346434] [2023-08-30 05:27:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:01,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:01,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:01,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039346434] [2023-08-30 05:27:01,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039346434] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:01,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100011276] [2023-08-30 05:27:01,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:27:01,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:01,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:01,797 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:27:01,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-08-30 05:27:01,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 05:27:01,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:27:01,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:27:01,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:02,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:02,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100011276] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:02,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:02,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-30 05:27:02,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186972086] [2023-08-30 05:27:02,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:02,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:27:02,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:02,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:27:02,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:27:02,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:27:02,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1157 transitions, 33599 flow. Second operand has 15 states, 15 states have (on average 182.8) internal successors, (2742), 15 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:02,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:02,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:27:02,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:05,611 INFO L130 PetriNetUnfolder]: 2910/5905 cut-off events. [2023-08-30 05:27:05,612 INFO L131 PetriNetUnfolder]: For 319202/319202 co-relation queries the response was YES. [2023-08-30 05:27:05,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70329 conditions, 5905 events. 2910/5905 cut-off events. For 319202/319202 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 48401 event pairs, 80 based on Foata normal form. 26/5931 useless extension candidates. Maximal degree in co-relation 70146. Up to 1670 conditions per place. [2023-08-30 05:27:05,695 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 733 selfloop transitions, 510 changer transitions 5/1248 dead transitions. [2023-08-30 05:27:05,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1248 transitions, 37735 flow [2023-08-30 05:27:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 05:27:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 05:27:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5205 transitions. [2023-08-30 05:27:05,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424412915851272 [2023-08-30 05:27:05,698 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5205 transitions. [2023-08-30 05:27:05,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5205 transitions. [2023-08-30 05:27:05,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:05,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5205 transitions. [2023-08-30 05:27:05,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 185.89285714285714) internal successors, (5205), 28 states have internal predecessors, (5205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:05,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 438.0) internal successors, (12702), 29 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:05,708 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 438.0) internal successors, (12702), 29 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:05,708 INFO L175 Difference]: Start difference. First operand has 515 places, 1157 transitions, 33599 flow. Second operand 28 states and 5205 transitions. [2023-08-30 05:27:05,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1248 transitions, 37735 flow [2023-08-30 05:27:09,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1248 transitions, 36791 flow, removed 160 selfloop flow, removed 12 redundant places. [2023-08-30 05:27:09,580 INFO L231 Difference]: Finished difference. Result has 532 places, 1167 transitions, 34352 flow [2023-08-30 05:27:09,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=31945, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=34352, PETRI_PLACES=532, PETRI_TRANSITIONS=1167} [2023-08-30 05:27:09,581 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 503 predicate places. [2023-08-30 05:27:09,581 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 1167 transitions, 34352 flow [2023-08-30 05:27:09,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 182.8) internal successors, (2742), 15 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:09,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:09,582 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:09,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-08-30 05:27:09,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-08-30 05:27:09,783 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:27:09,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:09,783 INFO L85 PathProgramCache]: Analyzing trace with hash 641670866, now seen corresponding path program 54 times [2023-08-30 05:27:09,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:09,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343134737] [2023-08-30 05:27:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:09,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:09,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343134737] [2023-08-30 05:27:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343134737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268487661] [2023-08-30 05:27:09,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:27:09,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:09,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:09,861 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:27:09,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-08-30 05:27:09,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:27:09,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:27:09,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:27:09,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:10,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268487661] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:10,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:10,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2023-08-30 05:27:10,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869728221] [2023-08-30 05:27:10,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:10,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:27:10,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:27:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:27:10,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:27:10,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 1167 transitions, 34352 flow. Second operand has 15 states, 15 states have (on average 182.86666666666667) internal successors, (2743), 15 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:10,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:10,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:27:10,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:14,578 INFO L130 PetriNetUnfolder]: 3372/6853 cut-off events. [2023-08-30 05:27:14,578 INFO L131 PetriNetUnfolder]: For 416363/416363 co-relation queries the response was YES. [2023-08-30 05:27:14,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84511 conditions, 6853 events. 3372/6853 cut-off events. For 416363/416363 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 57864 event pairs, 150 based on Foata normal form. 52/6905 useless extension candidates. Maximal degree in co-relation 84328. Up to 2007 conditions per place. [2023-08-30 05:27:14,683 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 784 selfloop transitions, 652 changer transitions 5/1441 dead transitions. [2023-08-30 05:27:14,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 1441 transitions, 44486 flow [2023-08-30 05:27:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 05:27:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 05:27:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6145 transitions. [2023-08-30 05:27:14,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251418292514183 [2023-08-30 05:27:14,687 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 6145 transitions. [2023-08-30 05:27:14,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 6145 transitions. [2023-08-30 05:27:14,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:14,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 6145 transitions. [2023-08-30 05:27:14,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 186.21212121212122) internal successors, (6145), 33 states have internal predecessors, (6145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:14,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 438.0) internal successors, (14892), 34 states have internal predecessors, (14892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:14,698 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 438.0) internal successors, (14892), 34 states have internal predecessors, (14892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:14,698 INFO L175 Difference]: Start difference. First operand has 532 places, 1167 transitions, 34352 flow. Second operand 33 states and 6145 transitions. [2023-08-30 05:27:14,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 1441 transitions, 44486 flow [2023-08-30 05:27:19,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 1441 transitions, 42665 flow, removed 629 selfloop flow, removed 12 redundant places. [2023-08-30 05:27:19,666 INFO L231 Difference]: Finished difference. Result has 559 places, 1313 transitions, 39944 flow [2023-08-30 05:27:19,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=32217, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=500, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=39944, PETRI_PLACES=559, PETRI_TRANSITIONS=1313} [2023-08-30 05:27:19,667 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 530 predicate places. [2023-08-30 05:27:19,667 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 1313 transitions, 39944 flow [2023-08-30 05:27:19,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 182.86666666666667) internal successors, (2743), 15 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:19,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:19,668 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:19,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-08-30 05:27:19,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:19,869 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:27:19,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2062801614, now seen corresponding path program 55 times [2023-08-30 05:27:19,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:19,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068705389] [2023-08-30 05:27:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:19,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:19,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068705389] [2023-08-30 05:27:19,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068705389] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177561086] [2023-08-30 05:27:19,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:27:19,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:19,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:19,948 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:27:19,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-08-30 05:27:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:20,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:27:20,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:20,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:20,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177561086] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:20,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:20,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-08-30 05:27:20,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403448696] [2023-08-30 05:27:20,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:20,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:27:20,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:20,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:27:20,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:27:20,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:27:20,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1313 transitions, 39944 flow. Second operand has 15 states, 15 states have (on average 182.86666666666667) internal successors, (2743), 15 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:20,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:20,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:27:20,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:24,565 INFO L130 PetriNetUnfolder]: 3483/7040 cut-off events. [2023-08-30 05:27:24,565 INFO L131 PetriNetUnfolder]: For 427999/427999 co-relation queries the response was YES. [2023-08-30 05:27:24,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87419 conditions, 7040 events. 3483/7040 cut-off events. For 427999/427999 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 59368 event pairs, 276 based on Foata normal form. 84/7124 useless extension candidates. Maximal degree in co-relation 87232. Up to 5459 conditions per place. [2023-08-30 05:27:24,661 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 1138 selfloop transitions, 311 changer transitions 1/1450 dead transitions. [2023-08-30 05:27:24,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1450 transitions, 45451 flow [2023-08-30 05:27:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 05:27:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 05:27:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3929 transitions. [2023-08-30 05:27:24,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42715807784300935 [2023-08-30 05:27:24,664 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3929 transitions. [2023-08-30 05:27:24,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3929 transitions. [2023-08-30 05:27:24,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:24,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3929 transitions. [2023-08-30 05:27:24,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 187.0952380952381) internal successors, (3929), 21 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:24,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:24,670 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:24,670 INFO L175 Difference]: Start difference. First operand has 559 places, 1313 transitions, 39944 flow. Second operand 21 states and 3929 transitions. [2023-08-30 05:27:24,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 1450 transitions, 45451 flow [2023-08-30 05:27:30,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 1450 transitions, 43935 flow, removed 659 selfloop flow, removed 18 redundant places. [2023-08-30 05:27:30,343 INFO L231 Difference]: Finished difference. Result has 566 places, 1364 transitions, 40626 flow [2023-08-30 05:27:30,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=38269, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1044, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=40626, PETRI_PLACES=566, PETRI_TRANSITIONS=1364} [2023-08-30 05:27:30,345 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 537 predicate places. [2023-08-30 05:27:30,345 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 1364 transitions, 40626 flow [2023-08-30 05:27:30,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 182.86666666666667) internal successors, (2743), 15 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:30,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:30,346 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:30,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-08-30 05:27:30,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:30,552 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:27:30,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash 468229150, now seen corresponding path program 56 times [2023-08-30 05:27:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:30,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051286970] [2023-08-30 05:27:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:30,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:30,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:30,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051286970] [2023-08-30 05:27:30,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051286970] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:30,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348879186] [2023-08-30 05:27:30,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:27:30,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:30,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:30,615 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:27:30,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-08-30 05:27:30,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:27:30,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:27:30,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:27:30,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:30,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348879186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:30,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:30,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2023-08-30 05:27:30,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577971086] [2023-08-30 05:27:30,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:30,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:27:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:27:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:27:30,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:27:30,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1364 transitions, 40626 flow. Second operand has 15 states, 15 states have (on average 183.06666666666666) internal successors, (2746), 15 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:30,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:30,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:27:30,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:35,405 INFO L130 PetriNetUnfolder]: 3431/6934 cut-off events. [2023-08-30 05:27:35,405 INFO L131 PetriNetUnfolder]: For 387869/387869 co-relation queries the response was YES. [2023-08-30 05:27:35,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84361 conditions, 6934 events. 3431/6934 cut-off events. For 387869/387869 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 58396 event pairs, 180 based on Foata normal form. 122/7056 useless extension candidates. Maximal degree in co-relation 84170. Up to 3193 conditions per place. [2023-08-30 05:27:35,505 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 904 selfloop transitions, 548 changer transitions 0/1452 dead transitions. [2023-08-30 05:27:35,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 1452 transitions, 44529 flow [2023-08-30 05:27:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 05:27:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 05:27:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4307 transitions. [2023-08-30 05:27:35,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.427536231884058 [2023-08-30 05:27:35,508 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4307 transitions. [2023-08-30 05:27:35,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4307 transitions. [2023-08-30 05:27:35,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:35,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4307 transitions. [2023-08-30 05:27:35,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 187.2608695652174) internal successors, (4307), 23 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:35,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 438.0) internal successors, (10512), 24 states have internal predecessors, (10512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:35,517 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 438.0) internal successors, (10512), 24 states have internal predecessors, (10512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:35,518 INFO L175 Difference]: Start difference. First operand has 566 places, 1364 transitions, 40626 flow. Second operand 23 states and 4307 transitions. [2023-08-30 05:27:35,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 1452 transitions, 44529 flow [2023-08-30 05:27:40,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1452 transitions, 43980 flow, removed 91 selfloop flow, removed 14 redundant places. [2023-08-30 05:27:40,742 INFO L231 Difference]: Finished difference. Result has 575 places, 1340 transitions, 40738 flow [2023-08-30 05:27:40,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=38846, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=788, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=40738, PETRI_PLACES=575, PETRI_TRANSITIONS=1340} [2023-08-30 05:27:40,743 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 546 predicate places. [2023-08-30 05:27:40,743 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 1340 transitions, 40738 flow [2023-08-30 05:27:40,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 183.06666666666666) internal successors, (2746), 15 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:40,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:40,744 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:40,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-08-30 05:27:40,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:40,944 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:27:40,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash 936615282, now seen corresponding path program 57 times [2023-08-30 05:27:40,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:40,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814989176] [2023-08-30 05:27:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:40,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:41,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:41,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814989176] [2023-08-30 05:27:41,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814989176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:41,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054118344] [2023-08-30 05:27:41,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:27:41,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:41,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:41,008 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:27:41,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-08-30 05:27:41,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:27:41,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:27:41,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:27:41,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:41,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054118344] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:41,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:41,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-30 05:27:41,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122959247] [2023-08-30 05:27:41,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:41,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:27:41,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:41,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:27:41,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:27:41,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:27:41,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 1340 transitions, 40738 flow. Second operand has 16 states, 16 states have (on average 182.75) internal successors, (2924), 16 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:41,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:41,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:27:41,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:45,673 INFO L130 PetriNetUnfolder]: 3509/7064 cut-off events. [2023-08-30 05:27:45,673 INFO L131 PetriNetUnfolder]: For 402281/402281 co-relation queries the response was YES. [2023-08-30 05:27:45,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87762 conditions, 7064 events. 3509/7064 cut-off events. For 402281/402281 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 59350 event pairs, 170 based on Foata normal form. 14/7078 useless extension candidates. Maximal degree in co-relation 87572. Up to 2359 conditions per place. [2023-08-30 05:27:45,778 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 776 selfloop transitions, 676 changer transitions 9/1461 dead transitions. [2023-08-30 05:27:45,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 1461 transitions, 46169 flow [2023-08-30 05:27:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 05:27:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 05:27:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5568 transitions. [2023-08-30 05:27:45,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237442922374429 [2023-08-30 05:27:45,782 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5568 transitions. [2023-08-30 05:27:45,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5568 transitions. [2023-08-30 05:27:45,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:45,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5568 transitions. [2023-08-30 05:27:45,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 185.6) internal successors, (5568), 30 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:45,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 438.0) internal successors, (13578), 31 states have internal predecessors, (13578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:45,791 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 438.0) internal successors, (13578), 31 states have internal predecessors, (13578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:45,792 INFO L175 Difference]: Start difference. First operand has 575 places, 1340 transitions, 40738 flow. Second operand 30 states and 5568 transitions. [2023-08-30 05:27:45,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 1461 transitions, 46169 flow [2023-08-30 05:27:51,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 1461 transitions, 45733 flow, removed 63 selfloop flow, removed 12 redundant places. [2023-08-30 05:27:51,351 INFO L231 Difference]: Finished difference. Result has 599 places, 1370 transitions, 43535 flow [2023-08-30 05:27:51,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=40191, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=635, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=43535, PETRI_PLACES=599, PETRI_TRANSITIONS=1370} [2023-08-30 05:27:51,353 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 570 predicate places. [2023-08-30 05:27:51,353 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 1370 transitions, 43535 flow [2023-08-30 05:27:51,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 182.75) internal successors, (2924), 16 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:51,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:51,354 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:51,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-08-30 05:27:51,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:51,554 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:27:51,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash 389522062, now seen corresponding path program 58 times [2023-08-30 05:27:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:51,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566461857] [2023-08-30 05:27:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:51,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:51,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:51,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566461857] [2023-08-30 05:27:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566461857] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162802473] [2023-08-30 05:27:51,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:27:51,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:51,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:51,623 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:27:51,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-08-30 05:27:51,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:27:51,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:27:51,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:27:51,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:51,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:51,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162802473] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:51,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:51,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-30 05:27:51,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431064678] [2023-08-30 05:27:51,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:51,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 05:27:51,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 05:27:51,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-08-30 05:27:51,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:27:51,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 1370 transitions, 43535 flow. Second operand has 20 states, 20 states have (on average 182.55) internal successors, (3651), 20 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:51,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:51,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:27:51,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:57,145 INFO L130 PetriNetUnfolder]: 3769/7634 cut-off events. [2023-08-30 05:27:57,145 INFO L131 PetriNetUnfolder]: For 510832/510832 co-relation queries the response was YES. [2023-08-30 05:27:57,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99692 conditions, 7634 events. 3769/7634 cut-off events. For 510832/510832 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 65391 event pairs, 208 based on Foata normal form. 40/7674 useless extension candidates. Maximal degree in co-relation 99496. Up to 2196 conditions per place. [2023-08-30 05:27:57,265 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 747 selfloop transitions, 800 changer transitions 20/1567 dead transitions. [2023-08-30 05:27:57,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 1567 transitions, 52412 flow [2023-08-30 05:27:57,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-30 05:27:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-30 05:27:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6310 transitions. [2023-08-30 05:27:57,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237174321783508 [2023-08-30 05:27:57,269 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 6310 transitions. [2023-08-30 05:27:57,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 6310 transitions. [2023-08-30 05:27:57,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:57,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 6310 transitions. [2023-08-30 05:27:57,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 185.58823529411765) internal successors, (6310), 34 states have internal predecessors, (6310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:57,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 438.0) internal successors, (15330), 35 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:57,281 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 438.0) internal successors, (15330), 35 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:57,281 INFO L175 Difference]: Start difference. First operand has 599 places, 1370 transitions, 43535 flow. Second operand 34 states and 6310 transitions. [2023-08-30 05:27:57,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 1567 transitions, 52412 flow [2023-08-30 05:28:04,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 1567 transitions, 52011 flow, removed 116 selfloop flow, removed 13 redundant places. [2023-08-30 05:28:04,276 INFO L231 Difference]: Finished difference. Result has 624 places, 1454 transitions, 49419 flow [2023-08-30 05:28:04,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=42942, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=719, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=49419, PETRI_PLACES=624, PETRI_TRANSITIONS=1454} [2023-08-30 05:28:04,277 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 595 predicate places. [2023-08-30 05:28:04,278 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 1454 transitions, 49419 flow [2023-08-30 05:28:04,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.55) internal successors, (3651), 20 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:04,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:04,278 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:04,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:04,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:04,479 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:28:04,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:04,479 INFO L85 PathProgramCache]: Analyzing trace with hash -632206374, now seen corresponding path program 59 times [2023-08-30 05:28:04,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:04,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78488605] [2023-08-30 05:28:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:04,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:04,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:04,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78488605] [2023-08-30 05:28:04,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78488605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626262525] [2023-08-30 05:28:04,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:28:04,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:04,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:04,558 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:04,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-08-30 05:28:04,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 05:28:04,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:04,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:28:04,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:04,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626262525] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:04,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-08-30 05:28:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313200203] [2023-08-30 05:28:04,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:04,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:28:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:04,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:28:04,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:28:04,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:28:04,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 1454 transitions, 49419 flow. Second operand has 17 states, 17 states have (on average 182.94117647058823) internal successors, (3110), 17 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:04,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:04,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:28:04,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:11,376 INFO L130 PetriNetUnfolder]: 4544/9247 cut-off events. [2023-08-30 05:28:11,376 INFO L131 PetriNetUnfolder]: For 700955/700955 co-relation queries the response was YES. [2023-08-30 05:28:11,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126116 conditions, 9247 events. 4544/9247 cut-off events. For 700955/700955 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 82374 event pairs, 264 based on Foata normal form. 42/9289 useless extension candidates. Maximal degree in co-relation 125914. Up to 3075 conditions per place. [2023-08-30 05:28:11,528 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 981 selfloop transitions, 880 changer transitions 0/1861 dead transitions. [2023-08-30 05:28:11,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 1861 transitions, 66146 flow [2023-08-30 05:28:11,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 05:28:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 05:28:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4496 transitions. [2023-08-30 05:28:11,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277016742770167 [2023-08-30 05:28:11,531 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4496 transitions. [2023-08-30 05:28:11,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4496 transitions. [2023-08-30 05:28:11,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:11,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4496 transitions. [2023-08-30 05:28:11,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 187.33333333333334) internal successors, (4496), 24 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:11,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 438.0) internal successors, (10950), 25 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:11,539 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 438.0) internal successors, (10950), 25 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:11,539 INFO L175 Difference]: Start difference. First operand has 624 places, 1454 transitions, 49419 flow. Second operand 24 states and 4496 transitions. [2023-08-30 05:28:11,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 1861 transitions, 66146 flow [2023-08-30 05:28:23,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 1861 transitions, 64187 flow, removed 696 selfloop flow, removed 16 redundant places. [2023-08-30 05:28:23,618 INFO L231 Difference]: Finished difference. Result has 632 places, 1684 transitions, 59211 flow [2023-08-30 05:28:23,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=47281, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=667, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=59211, PETRI_PLACES=632, PETRI_TRANSITIONS=1684} [2023-08-30 05:28:23,619 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 603 predicate places. [2023-08-30 05:28:23,619 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 1684 transitions, 59211 flow [2023-08-30 05:28:23,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 182.94117647058823) internal successors, (3110), 17 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:23,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:23,620 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:23,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:23,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-08-30 05:28:23,820 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:28:23,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1579231018, now seen corresponding path program 60 times [2023-08-30 05:28:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:23,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101462064] [2023-08-30 05:28:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:23,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:23,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:23,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101462064] [2023-08-30 05:28:23,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101462064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:23,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17159460] [2023-08-30 05:28:23,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:28:23,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:23,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:23,891 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:23,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-08-30 05:28:24,009 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:28:24,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:24,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:28:24,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:24,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:24,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17159460] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:24,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:24,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-30 05:28:24,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068719487] [2023-08-30 05:28:24,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 05:28:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 05:28:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-08-30 05:28:24,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:28:24,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 1684 transitions, 59211 flow. Second operand has 20 states, 20 states have (on average 182.8) internal successors, (3656), 20 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:24,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:24,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:28:24,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:31,336 INFO L130 PetriNetUnfolder]: 4770/9691 cut-off events. [2023-08-30 05:28:31,337 INFO L131 PetriNetUnfolder]: For 762649/762649 co-relation queries the response was YES. [2023-08-30 05:28:31,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133973 conditions, 9691 events. 4770/9691 cut-off events. For 762649/762649 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 86825 event pairs, 1823 based on Foata normal form. 106/9797 useless extension candidates. Maximal degree in co-relation 133766. Up to 8785 conditions per place. [2023-08-30 05:28:31,493 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 1662 selfloop transitions, 188 changer transitions 0/1850 dead transitions. [2023-08-30 05:28:31,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 1850 transitions, 67529 flow [2023-08-30 05:28:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 05:28:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 05:28:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3941 transitions. [2023-08-30 05:28:31,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284627092846271 [2023-08-30 05:28:31,496 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3941 transitions. [2023-08-30 05:28:31,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3941 transitions. [2023-08-30 05:28:31,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:31,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3941 transitions. [2023-08-30 05:28:31,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 187.66666666666666) internal successors, (3941), 21 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:31,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:31,502 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:31,502 INFO L175 Difference]: Start difference. First operand has 632 places, 1684 transitions, 59211 flow. Second operand 21 states and 3941 transitions. [2023-08-30 05:28:31,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 1850 transitions, 67529 flow [2023-08-30 05:28:44,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 1850 transitions, 66265 flow, removed 524 selfloop flow, removed 11 redundant places. [2023-08-30 05:28:44,305 INFO L231 Difference]: Finished difference. Result has 650 places, 1768 transitions, 61993 flow [2023-08-30 05:28:44,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=57930, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=61993, PETRI_PLACES=650, PETRI_TRANSITIONS=1768} [2023-08-30 05:28:44,307 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 621 predicate places. [2023-08-30 05:28:44,307 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 1768 transitions, 61993 flow [2023-08-30 05:28:44,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.8) internal successors, (3656), 20 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:44,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:44,308 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:44,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:44,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-08-30 05:28:44,508 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:28:44,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash -949870662, now seen corresponding path program 61 times [2023-08-30 05:28:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:44,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341844776] [2023-08-30 05:28:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:44,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:44,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:44,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341844776] [2023-08-30 05:28:44,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341844776] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:44,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290268072] [2023-08-30 05:28:44,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:28:44,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:44,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:44,576 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:44,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-08-30 05:28:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:44,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:28:44,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:44,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:44,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290268072] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:44,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:44,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-30 05:28:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962072829] [2023-08-30 05:28:44,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:44,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 05:28:44,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:44,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 05:28:44,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-30 05:28:44,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:28:44,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 1768 transitions, 61993 flow. Second operand has 20 states, 20 states have (on average 182.55) internal successors, (3651), 20 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:44,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:44,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:28:44,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:53,233 INFO L130 PetriNetUnfolder]: 5144/10519 cut-off events. [2023-08-30 05:28:53,233 INFO L131 PetriNetUnfolder]: For 817510/817510 co-relation queries the response was YES. [2023-08-30 05:28:53,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145403 conditions, 10519 events. 5144/10519 cut-off events. For 817510/817510 co-relation queries the response was YES. Maximal size of possible extension queue 929. Compared 96328 event pairs, 770 based on Foata normal form. 48/10567 useless extension candidates. Maximal degree in co-relation 145188. Up to 3044 conditions per place. [2023-08-30 05:28:53,397 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 1245 selfloop transitions, 788 changer transitions 18/2051 dead transitions. [2023-08-30 05:28:53,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 2051 transitions, 74389 flow [2023-08-30 05:28:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-30 05:28:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-30 05:28:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 6875 transitions. [2023-08-30 05:28:53,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42422559545847216 [2023-08-30 05:28:53,401 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 6875 transitions. [2023-08-30 05:28:53,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 6875 transitions. [2023-08-30 05:28:53,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:53,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 6875 transitions. [2023-08-30 05:28:53,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 185.8108108108108) internal successors, (6875), 37 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:53,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 438.0) internal successors, (16644), 38 states have internal predecessors, (16644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:53,413 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 438.0) internal successors, (16644), 38 states have internal predecessors, (16644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:53,413 INFO L175 Difference]: Start difference. First operand has 650 places, 1768 transitions, 61993 flow. Second operand 37 states and 6875 transitions. [2023-08-30 05:28:53,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 2051 transitions, 74389 flow [2023-08-30 05:29:08,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 2051 transitions, 72608 flow, removed 868 selfloop flow, removed 4 redundant places. [2023-08-30 05:29:08,779 INFO L231 Difference]: Finished difference. Result has 696 places, 1917 transitions, 69452 flow [2023-08-30 05:29:08,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=60351, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=637, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1061, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=69452, PETRI_PLACES=696, PETRI_TRANSITIONS=1917} [2023-08-30 05:29:08,781 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 667 predicate places. [2023-08-30 05:29:08,781 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 1917 transitions, 69452 flow [2023-08-30 05:29:08,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.55) internal successors, (3651), 20 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:08,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:29:08,781 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:29:08,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-08-30 05:29:08,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-08-30 05:29:08,982 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:29:08,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:29:08,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2134904985, now seen corresponding path program 62 times [2023-08-30 05:29:08,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:29:08,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250899784] [2023-08-30 05:29:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:29:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:29:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:29:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:09,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:29:09,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250899784] [2023-08-30 05:29:09,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250899784] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:29:09,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156510290] [2023-08-30 05:29:09,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:29:09,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:29:09,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:29:09,055 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:29:09,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-08-30 05:29:09,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:29:09,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:29:09,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:29:09,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:29:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:09,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:29:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:09,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156510290] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:29:09,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:29:09,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-08-30 05:29:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548875554] [2023-08-30 05:29:09,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:29:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:29:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:29:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:29:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:29:09,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:29:09,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 1917 transitions, 69452 flow. Second operand has 17 states, 17 states have (on average 182.88235294117646) internal successors, (3109), 17 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:09,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:29:09,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:29:09,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:29:19,813 INFO L130 PetriNetUnfolder]: 5773/11796 cut-off events. [2023-08-30 05:29:19,813 INFO L131 PetriNetUnfolder]: For 1115695/1115695 co-relation queries the response was YES. [2023-08-30 05:29:19,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171322 conditions, 11796 events. 5773/11796 cut-off events. For 1115695/1115695 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 109920 event pairs, 487 based on Foata normal form. 62/11858 useless extension candidates. Maximal degree in co-relation 171092. Up to 7882 conditions per place. [2023-08-30 05:29:20,024 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 1687 selfloop transitions, 620 changer transitions 3/2310 dead transitions. [2023-08-30 05:29:20,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 2310 transitions, 88806 flow [2023-08-30 05:29:20,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 05:29:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 05:29:20,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4492 transitions. [2023-08-30 05:29:20,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273211567732116 [2023-08-30 05:29:20,028 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4492 transitions. [2023-08-30 05:29:20,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4492 transitions. [2023-08-30 05:29:20,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:29:20,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4492 transitions. [2023-08-30 05:29:20,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 187.16666666666666) internal successors, (4492), 24 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:20,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 438.0) internal successors, (10950), 25 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:20,036 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 438.0) internal successors, (10950), 25 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:20,036 INFO L175 Difference]: Start difference. First operand has 696 places, 1917 transitions, 69452 flow. Second operand 24 states and 4492 transitions. [2023-08-30 05:29:20,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 2310 transitions, 88806 flow [2023-08-30 05:29:41,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 2310 transitions, 83267 flow, removed 2445 selfloop flow, removed 13 redundant places. [2023-08-30 05:29:41,530 INFO L231 Difference]: Finished difference. Result has 713 places, 2126 transitions, 75678 flow [2023-08-30 05:29:41,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=66195, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1907, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=434, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=75678, PETRI_PLACES=713, PETRI_TRANSITIONS=2126} [2023-08-30 05:29:41,531 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 684 predicate places. [2023-08-30 05:29:41,531 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 2126 transitions, 75678 flow [2023-08-30 05:29:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 182.88235294117646) internal successors, (3109), 17 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:41,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:29:41,532 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:29:41,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-08-30 05:29:41,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-08-30 05:29:41,737 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:29:41,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:29:41,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1471728443, now seen corresponding path program 63 times [2023-08-30 05:29:41,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:29:41,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056352472] [2023-08-30 05:29:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:29:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:29:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:29:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:41,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:29:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056352472] [2023-08-30 05:29:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056352472] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:29:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104607650] [2023-08-30 05:29:41,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:29:41,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:29:41,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:29:41,808 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:29:41,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-08-30 05:29:41,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:29:41,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:29:41,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:29:41,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:29:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:42,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:29:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:42,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104607650] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:29:42,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:29:42,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-08-30 05:29:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89018354] [2023-08-30 05:29:42,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:29:42,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:29:42,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:29:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:29:42,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:29:42,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:29:42,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 2126 transitions, 75678 flow. Second operand has 17 states, 17 states have (on average 182.8235294117647) internal successors, (3108), 17 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:42,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:29:42,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:29:42,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:29:52,929 INFO L130 PetriNetUnfolder]: 5915/12158 cut-off events. [2023-08-30 05:29:52,929 INFO L131 PetriNetUnfolder]: For 1087345/1087345 co-relation queries the response was YES. [2023-08-30 05:29:53,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173110 conditions, 12158 events. 5915/12158 cut-off events. For 1087345/1087345 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 114042 event pairs, 301 based on Foata normal form. 112/12270 useless extension candidates. Maximal degree in co-relation 172876. Up to 6125 conditions per place. [2023-08-30 05:29:53,253 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 1549 selfloop transitions, 746 changer transitions 9/2304 dead transitions. [2023-08-30 05:29:53,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 2304 transitions, 85688 flow [2023-08-30 05:29:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-30 05:29:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-30 05:29:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6315 transitions. [2023-08-30 05:29:53,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4240531829170024 [2023-08-30 05:29:53,257 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 6315 transitions. [2023-08-30 05:29:53,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 6315 transitions. [2023-08-30 05:29:53,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:29:53,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 6315 transitions. [2023-08-30 05:29:53,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 185.73529411764707) internal successors, (6315), 34 states have internal predecessors, (6315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:53,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 438.0) internal successors, (15330), 35 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:53,267 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 438.0) internal successors, (15330), 35 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:53,267 INFO L175 Difference]: Start difference. First operand has 713 places, 2126 transitions, 75678 flow. Second operand 34 states and 6315 transitions. [2023-08-30 05:29:53,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 2304 transitions, 85688 flow [2023-08-30 05:30:14,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 2304 transitions, 83396 flow, removed 861 selfloop flow, removed 12 redundant places. [2023-08-30 05:30:14,057 INFO L231 Difference]: Finished difference. Result has 747 places, 2193 transitions, 79733 flow [2023-08-30 05:30:14,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=73322, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=79733, PETRI_PLACES=747, PETRI_TRANSITIONS=2193} [2023-08-30 05:30:14,059 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 718 predicate places. [2023-08-30 05:30:14,059 INFO L495 AbstractCegarLoop]: Abstraction has has 747 places, 2193 transitions, 79733 flow [2023-08-30 05:30:14,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 182.8235294117647) internal successors, (3108), 17 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:14,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:30:14,060 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:30:14,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-08-30 05:30:14,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:30:14,265 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:30:14,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:30:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash -339650093, now seen corresponding path program 64 times [2023-08-30 05:30:14,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:30:14,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480037528] [2023-08-30 05:30:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:30:14,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:30:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:30:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:14,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:30:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480037528] [2023-08-30 05:30:14,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480037528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:30:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289334605] [2023-08-30 05:30:14,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:30:14,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:30:14,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:30:14,329 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:30:14,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-08-30 05:30:14,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:30:14,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:30:14,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:30:14,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:30:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:14,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:30:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:14,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289334605] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:30:14,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:30:14,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-30 05:30:14,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016820811] [2023-08-30 05:30:14,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:30:14,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:30:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:30:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:30:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:30:14,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:30:14,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 2193 transitions, 79733 flow. Second operand has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:14,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:30:14,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:30:14,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:30:26,440 INFO L130 PetriNetUnfolder]: 6214/12697 cut-off events. [2023-08-30 05:30:26,440 INFO L131 PetriNetUnfolder]: For 1181455/1181455 co-relation queries the response was YES. [2023-08-30 05:30:26,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184956 conditions, 12697 events. 6214/12697 cut-off events. For 1181455/1181455 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 119598 event pairs, 255 based on Foata normal form. 52/12749 useless extension candidates. Maximal degree in co-relation 184712. Up to 9930 conditions per place. [2023-08-30 05:30:26,660 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 1866 selfloop transitions, 527 changer transitions 0/2393 dead transitions. [2023-08-30 05:30:26,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 2393 transitions, 90964 flow [2023-08-30 05:30:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:30:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:30:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1687 transitions. [2023-08-30 05:30:26,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42795535261288686 [2023-08-30 05:30:26,663 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1687 transitions. [2023-08-30 05:30:26,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1687 transitions. [2023-08-30 05:30:26,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:30:26,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1687 transitions. [2023-08-30 05:30:26,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.44444444444446) internal successors, (1687), 9 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:26,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:26,667 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 438.0) internal successors, (4380), 10 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:26,667 INFO L175 Difference]: Start difference. First operand has 747 places, 2193 transitions, 79733 flow. Second operand 9 states and 1687 transitions. [2023-08-30 05:30:26,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 2393 transitions, 90964 flow [2023-08-30 05:30:49,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 2393 transitions, 88825 flow, removed 717 selfloop flow, removed 19 redundant places. [2023-08-30 05:30:49,754 INFO L231 Difference]: Finished difference. Result has 741 places, 2289 transitions, 83256 flow [2023-08-30 05:30:49,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=77782, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=429, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=83256, PETRI_PLACES=741, PETRI_TRANSITIONS=2289} [2023-08-30 05:30:49,756 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 712 predicate places. [2023-08-30 05:30:49,756 INFO L495 AbstractCegarLoop]: Abstraction has has 741 places, 2289 transitions, 83256 flow [2023-08-30 05:30:49,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:49,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:30:49,757 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:30:49,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2023-08-30 05:30:49,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:30:49,958 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:30:49,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:30:49,958 INFO L85 PathProgramCache]: Analyzing trace with hash 387994068, now seen corresponding path program 65 times [2023-08-30 05:30:49,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:30:49,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266195170] [2023-08-30 05:30:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:30:49,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:30:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:30:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:30:50,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:30:50,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266195170] [2023-08-30 05:30:50,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266195170] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:30:50,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632659412] [2023-08-30 05:30:50,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:30:50,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:30:50,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:30:50,019 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:30:50,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-08-30 05:30:50,131 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 05:30:50,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:30:50,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:30:50,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:30:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:50,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:30:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:30:50,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632659412] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:30:50,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:30:50,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2023-08-30 05:30:50,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300919549] [2023-08-30 05:30:50,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:30:50,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:30:50,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:30:50,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:30:50,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:30:50,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:30:50,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 2289 transitions, 83256 flow. Second operand has 16 states, 16 states have (on average 182.9375) internal successors, (2927), 16 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:50,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:30:50,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:30:50,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:31:02,705 INFO L130 PetriNetUnfolder]: 6491/13290 cut-off events. [2023-08-30 05:31:02,705 INFO L131 PetriNetUnfolder]: For 1284924/1284924 co-relation queries the response was YES. [2023-08-30 05:31:02,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193984 conditions, 13290 events. 6491/13290 cut-off events. For 1284924/1284924 co-relation queries the response was YES. Maximal size of possible extension queue 1198. Compared 126569 event pairs, 2140 based on Foata normal form. 98/13388 useless extension candidates. Maximal degree in co-relation 193740. Up to 10478 conditions per place. [2023-08-30 05:31:02,950 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 2040 selfloop transitions, 436 changer transitions 0/2476 dead transitions. [2023-08-30 05:31:02,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 2476 transitions, 93941 flow [2023-08-30 05:31:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 05:31:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 05:31:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3369 transitions. [2023-08-30 05:31:02,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273211567732116 [2023-08-30 05:31:02,952 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3369 transitions. [2023-08-30 05:31:02,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3369 transitions. [2023-08-30 05:31:02,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:31:02,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3369 transitions. [2023-08-30 05:31:02,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 187.16666666666666) internal successors, (3369), 18 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:02,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:02,958 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 438.0) internal successors, (8322), 19 states have internal predecessors, (8322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:02,958 INFO L175 Difference]: Start difference. First operand has 741 places, 2289 transitions, 83256 flow. Second operand 18 states and 3369 transitions. [2023-08-30 05:31:02,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 2476 transitions, 93941 flow [2023-08-30 05:31:27,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 2476 transitions, 93458 flow, removed 115 selfloop flow, removed 6 redundant places. [2023-08-30 05:31:27,739 INFO L231 Difference]: Finished difference. Result has 755 places, 2364 transitions, 87157 flow [2023-08-30 05:31:27,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=82289, PETRI_DIFFERENCE_MINUEND_PLACES=734, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1857, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=87157, PETRI_PLACES=755, PETRI_TRANSITIONS=2364} [2023-08-30 05:31:27,741 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 726 predicate places. [2023-08-30 05:31:27,741 INFO L495 AbstractCegarLoop]: Abstraction has has 755 places, 2364 transitions, 87157 flow [2023-08-30 05:31:27,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 182.9375) internal successors, (2927), 16 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:27,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:31:27,742 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:31:27,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-08-30 05:31:27,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:31:27,947 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:31:27,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:31:27,948 INFO L85 PathProgramCache]: Analyzing trace with hash 557486074, now seen corresponding path program 66 times [2023-08-30 05:31:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:31:27,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650488128] [2023-08-30 05:31:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:31:27,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:31:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:31:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:31:28,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:31:28,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650488128] [2023-08-30 05:31:28,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650488128] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:31:28,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471007373] [2023-08-30 05:31:28,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:31:28,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:31:28,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:31:28,025 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:31:28,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-08-30 05:31:28,166 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:31:28,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:31:28,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:31:28,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:31:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:31:28,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:31:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:31:28,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471007373] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:31:28,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:31:28,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2023-08-30 05:31:28,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639858953] [2023-08-30 05:31:28,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:31:28,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:31:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:31:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:31:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:31:28,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:31:28,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 2364 transitions, 87157 flow. Second operand has 16 states, 16 states have (on average 182.8125) internal successors, (2925), 16 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:28,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:31:28,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:31:28,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:31:40,989 INFO L130 PetriNetUnfolder]: 6443/13138 cut-off events. [2023-08-30 05:31:40,989 INFO L131 PetriNetUnfolder]: For 1233756/1233756 co-relation queries the response was YES. [2023-08-30 05:31:41,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193347 conditions, 13138 events. 6443/13138 cut-off events. For 1233756/1233756 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 124357 event pairs, 1086 based on Foata normal form. 42/13180 useless extension candidates. Maximal degree in co-relation 193100. Up to 4246 conditions per place. [2023-08-30 05:31:41,222 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 1603 selfloop transitions, 838 changer transitions 7/2448 dead transitions. [2023-08-30 05:31:41,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 2448 transitions, 93697 flow [2023-08-30 05:31:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 05:31:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 05:31:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4642 transitions. [2023-08-30 05:31:41,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239269406392694 [2023-08-30 05:31:41,225 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4642 transitions. [2023-08-30 05:31:41,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4642 transitions. [2023-08-30 05:31:41,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:31:41,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4642 transitions. [2023-08-30 05:31:41,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 185.68) internal successors, (4642), 25 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:41,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 438.0) internal successors, (11388), 26 states have internal predecessors, (11388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:41,236 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 438.0) internal successors, (11388), 26 states have internal predecessors, (11388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:41,236 INFO L175 Difference]: Start difference. First operand has 755 places, 2364 transitions, 87157 flow. Second operand 25 states and 4642 transitions. [2023-08-30 05:31:41,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 777 places, 2448 transitions, 93697 flow [2023-08-30 05:32:05,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 769 places, 2448 transitions, 93259 flow, removed 176 selfloop flow, removed 8 redundant places. [2023-08-30 05:32:05,445 INFO L231 Difference]: Finished difference. Result has 771 places, 2355 transitions, 88402 flow [2023-08-30 05:32:05,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=85441, PETRI_DIFFERENCE_MINUEND_PLACES=745, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=816, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=88402, PETRI_PLACES=771, PETRI_TRANSITIONS=2355} [2023-08-30 05:32:05,447 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 742 predicate places. [2023-08-30 05:32:05,447 INFO L495 AbstractCegarLoop]: Abstraction has has 771 places, 2355 transitions, 88402 flow [2023-08-30 05:32:05,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 182.8125) internal successors, (2925), 16 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:05,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:32:05,448 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:32:05,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2023-08-30 05:32:05,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2023-08-30 05:32:05,648 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:32:05,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:32:05,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1660162226, now seen corresponding path program 67 times [2023-08-30 05:32:05,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:32:05,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200362753] [2023-08-30 05:32:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:32:05,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:32:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:32:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:32:05,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:32:05,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200362753] [2023-08-30 05:32:05,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200362753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:32:05,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264290234] [2023-08-30 05:32:05,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:32:05,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:32:05,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:32:05,717 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:32:05,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-08-30 05:32:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:32:05,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:32:05,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:32:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:32:05,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:32:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:32:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264290234] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:32:05,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:32:05,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-30 05:32:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37430404] [2023-08-30 05:32:05,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:32:05,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 05:32:05,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:32:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 05:32:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-08-30 05:32:05,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:32:05,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 2355 transitions, 88402 flow. Second operand has 18 states, 18 states have (on average 182.66666666666666) internal successors, (3288), 18 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:05,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:32:05,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:32:05,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:32:21,651 INFO L130 PetriNetUnfolder]: 6789/13906 cut-off events. [2023-08-30 05:32:21,651 INFO L131 PetriNetUnfolder]: For 1393570/1393570 co-relation queries the response was YES. [2023-08-30 05:32:21,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209608 conditions, 13906 events. 6789/13906 cut-off events. For 1393570/1393570 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 133434 event pairs, 1049 based on Foata normal form. 22/13928 useless extension candidates. Maximal degree in co-relation 209358. Up to 4151 conditions per place. [2023-08-30 05:32:21,905 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 1605 selfloop transitions, 1010 changer transitions 6/2621 dead transitions. [2023-08-30 05:32:21,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 2621 transitions, 102345 flow [2023-08-30 05:32:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 05:32:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 05:32:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5944 transitions. [2023-08-30 05:32:21,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4240867579908676 [2023-08-30 05:32:21,908 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5944 transitions. [2023-08-30 05:32:21,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5944 transitions. [2023-08-30 05:32:21,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:32:21,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5944 transitions. [2023-08-30 05:32:21,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 185.75) internal successors, (5944), 32 states have internal predecessors, (5944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:21,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 438.0) internal successors, (14454), 33 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:21,919 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 438.0) internal successors, (14454), 33 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:21,919 INFO L175 Difference]: Start difference. First operand has 771 places, 2355 transitions, 88402 flow. Second operand 32 states and 5944 transitions. [2023-08-30 05:32:21,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 798 places, 2621 transitions, 102345 flow [2023-08-30 05:32:50,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 2621 transitions, 101358 flow, removed 340 selfloop flow, removed 13 redundant places. [2023-08-30 05:32:50,639 INFO L231 Difference]: Finished difference. Result has 796 places, 2502 transitions, 97699 flow [2023-08-30 05:32:50,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=87394, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=865, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=97699, PETRI_PLACES=796, PETRI_TRANSITIONS=2502} [2023-08-30 05:32:50,642 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 767 predicate places. [2023-08-30 05:32:50,642 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 2502 transitions, 97699 flow [2023-08-30 05:32:50,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 182.66666666666666) internal successors, (3288), 18 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:50,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:32:50,643 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:32:50,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-08-30 05:32:50,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:32:50,849 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:32:50,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:32:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash 137144454, now seen corresponding path program 68 times [2023-08-30 05:32:50,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:32:50,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747032619] [2023-08-30 05:32:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:32:50,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:32:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:32:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:32:50,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:32:50,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747032619] [2023-08-30 05:32:50,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747032619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:32:50,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80743398] [2023-08-30 05:32:50,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:32:50,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:32:50,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:32:50,923 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:32:50,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-08-30 05:32:51,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:32:51,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:32:51,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:32:51,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:32:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:32:51,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:32:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:32:51,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80743398] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:32:51,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:32:51,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-30 05:32:51,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317978426] [2023-08-30 05:32:51,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:32:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:32:51,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:32:51,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:32:51,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:32:51,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:32:51,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 2502 transitions, 97699 flow. Second operand has 14 states, 14 states have (on average 182.85714285714286) internal successors, (2560), 14 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:51,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:32:51,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:32:51,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:33:06,915 INFO L130 PetriNetUnfolder]: 6785/13898 cut-off events. [2023-08-30 05:33:06,915 INFO L131 PetriNetUnfolder]: For 1488673/1488673 co-relation queries the response was YES. [2023-08-30 05:33:07,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214357 conditions, 13898 events. 6785/13898 cut-off events. For 1488673/1488673 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 133259 event pairs, 1385 based on Foata normal form. 2/13900 useless extension candidates. Maximal degree in co-relation 214097. Up to 7142 conditions per place. [2023-08-30 05:33:07,185 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 1835 selfloop transitions, 715 changer transitions 7/2557 dead transitions. [2023-08-30 05:33:07,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 2557 transitions, 104220 flow [2023-08-30 05:33:07,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 05:33:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 05:33:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2599 transitions. [2023-08-30 05:33:07,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42384213959556427 [2023-08-30 05:33:07,187 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2599 transitions. [2023-08-30 05:33:07,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2599 transitions. [2023-08-30 05:33:07,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:33:07,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2599 transitions. [2023-08-30 05:33:07,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 185.64285714285714) internal successors, (2599), 14 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:33:07,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:33:07,192 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:33:07,192 INFO L175 Difference]: Start difference. First operand has 796 places, 2502 transitions, 97699 flow. Second operand 14 states and 2599 transitions. [2023-08-30 05:33:07,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 2557 transitions, 104220 flow [2023-08-30 05:33:39,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 795 places, 2557 transitions, 101888 flow, removed 907 selfloop flow, removed 13 redundant places. [2023-08-30 05:33:39,761 INFO L231 Difference]: Finished difference. Result has 800 places, 2505 transitions, 97649 flow [2023-08-30 05:33:39,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=95370, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1790, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=97649, PETRI_PLACES=800, PETRI_TRANSITIONS=2505} [2023-08-30 05:33:39,764 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 771 predicate places. [2023-08-30 05:33:39,764 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 2505 transitions, 97649 flow [2023-08-30 05:33:39,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 182.85714285714286) internal successors, (2560), 14 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:33:39,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:33:39,765 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:33:39,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-08-30 05:33:39,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:33:39,970 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:33:39,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:33:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash 394764947, now seen corresponding path program 69 times [2023-08-30 05:33:39,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:33:39,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401744837] [2023-08-30 05:33:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:33:39,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:33:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:33:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:33:40,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:33:40,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401744837] [2023-08-30 05:33:40,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401744837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:33:40,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729037801] [2023-08-30 05:33:40,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:33:40,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:33:40,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:33:40,041 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:33:40,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-08-30 05:33:40,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:33:40,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:33:40,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:33:40,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:33:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:33:40,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:33:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:33:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729037801] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:33:40,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:33:40,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-30 05:33:40,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137805751] [2023-08-30 05:33:40,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:33:40,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 05:33:40,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:33:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 05:33:40,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-30 05:33:40,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:33:40,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 2505 transitions, 97649 flow. Second operand has 18 states, 18 states have (on average 182.77777777777777) internal successors, (3290), 18 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:33:40,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:33:40,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:33:40,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:33:55,238 INFO L130 PetriNetUnfolder]: 6941/14126 cut-off events. [2023-08-30 05:33:55,238 INFO L131 PetriNetUnfolder]: For 1480329/1480329 co-relation queries the response was YES. [2023-08-30 05:33:55,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218948 conditions, 14126 events. 6941/14126 cut-off events. For 1480329/1480329 co-relation queries the response was YES. Maximal size of possible extension queue 1281. Compared 134842 event pairs, 669 based on Foata normal form. 66/14192 useless extension candidates. Maximal degree in co-relation 218683. Up to 13212 conditions per place. [2023-08-30 05:33:55,618 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 2381 selfloop transitions, 261 changer transitions 0/2642 dead transitions. [2023-08-30 05:33:55,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 816 places, 2642 transitions, 107087 flow [2023-08-30 05:33:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 05:33:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 05:33:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3718 transitions. [2023-08-30 05:33:55,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42442922374429226 [2023-08-30 05:33:55,620 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3718 transitions. [2023-08-30 05:33:55,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3718 transitions. [2023-08-30 05:33:55,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:33:55,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3718 transitions. [2023-08-30 05:33:55,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 185.9) internal successors, (3718), 20 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:33:55,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:33:55,626 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:33:55,626 INFO L175 Difference]: Start difference. First operand has 800 places, 2505 transitions, 97649 flow. Second operand 20 states and 3718 transitions. [2023-08-30 05:33:55,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 816 places, 2642 transitions, 107087 flow [2023-08-30 05:34:29,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 2642 transitions, 106360 flow, removed 56 selfloop flow, removed 9 redundant places. [2023-08-30 05:34:29,296 INFO L231 Difference]: Finished difference. Result has 815 places, 2588 transitions, 100949 flow [2023-08-30 05:34:29,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=96659, PETRI_DIFFERENCE_MINUEND_PLACES=788, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=100949, PETRI_PLACES=815, PETRI_TRANSITIONS=2588} [2023-08-30 05:34:29,298 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 786 predicate places. [2023-08-30 05:34:29,298 INFO L495 AbstractCegarLoop]: Abstraction has has 815 places, 2588 transitions, 100949 flow [2023-08-30 05:34:29,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 182.77777777777777) internal successors, (3290), 18 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:34:29,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:34:29,299 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:34:29,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2023-08-30 05:34:29,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2023-08-30 05:34:29,500 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:34:29,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:34:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash -987788263, now seen corresponding path program 70 times [2023-08-30 05:34:29,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:34:29,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134617843] [2023-08-30 05:34:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:34:29,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:34:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:34:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:34:29,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:34:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134617843] [2023-08-30 05:34:29,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134617843] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:34:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835406423] [2023-08-30 05:34:29,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:34:29,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:34:29,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:34:29,567 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:34:29,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-08-30 05:34:29,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:34:29,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:34:29,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:34:29,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:34:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:34:29,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:34:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:34:29,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835406423] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:34:29,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:34:29,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-30 05:34:29,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248027203] [2023-08-30 05:34:29,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:34:29,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:34:29,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:34:29,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:34:29,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:34:29,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:34:29,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 815 places, 2588 transitions, 100949 flow. Second operand has 16 states, 16 states have (on average 182.875) internal successors, (2926), 16 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:34:29,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:34:29,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:34:29,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:34:47,876 INFO L130 PetriNetUnfolder]: 7065/14326 cut-off events. [2023-08-30 05:34:47,876 INFO L131 PetriNetUnfolder]: For 1449117/1449117 co-relation queries the response was YES. [2023-08-30 05:34:48,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223262 conditions, 14326 events. 7065/14326 cut-off events. For 1449117/1449117 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 136518 event pairs, 555 based on Foata normal form. 12/14338 useless extension candidates. Maximal degree in co-relation 222991. Up to 13110 conditions per place. [2023-08-30 05:34:48,281 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 2392 selfloop transitions, 313 changer transitions 0/2705 dead transitions. [2023-08-30 05:34:48,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 2705 transitions, 109998 flow [2023-08-30 05:34:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 05:34:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 05:34:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2604 transitions. [2023-08-30 05:34:48,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2023-08-30 05:34:48,284 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2604 transitions. [2023-08-30 05:34:48,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2604 transitions. [2023-08-30 05:34:48,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:34:48,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2604 transitions. [2023-08-30 05:34:48,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:34:48,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:34:48,289 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 438.0) internal successors, (6570), 15 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:34:48,289 INFO L175 Difference]: Start difference. First operand has 815 places, 2588 transitions, 100949 flow. Second operand 14 states and 2604 transitions. [2023-08-30 05:34:48,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 825 places, 2705 transitions, 109998 flow [2023-08-30 05:35:23,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 819 places, 2705 transitions, 108770 flow, removed 524 selfloop flow, removed 6 redundant places. [2023-08-30 05:35:23,708 INFO L231 Difference]: Finished difference. Result has 825 places, 2643 transitions, 102908 flow [2023-08-30 05:35:23,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=99819, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=102908, PETRI_PLACES=825, PETRI_TRANSITIONS=2643} [2023-08-30 05:35:23,711 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 796 predicate places. [2023-08-30 05:35:23,711 INFO L495 AbstractCegarLoop]: Abstraction has has 825 places, 2643 transitions, 102908 flow [2023-08-30 05:35:23,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 182.875) internal successors, (2926), 16 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:23,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:35:23,711 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:35:23,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2023-08-30 05:35:23,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:35:23,912 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:35:23,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:35:23,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2053066874, now seen corresponding path program 71 times [2023-08-30 05:35:23,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:35:23,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363535296] [2023-08-30 05:35:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:35:23,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:35:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:35:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:35:23,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:35:23,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363535296] [2023-08-30 05:35:23,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363535296] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:35:23,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114830562] [2023-08-30 05:35:23,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:35:23,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:35:23,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:35:23,979 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:35:23,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-08-30 05:35:24,100 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:35:24,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:35:24,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:35:24,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:35:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:35:24,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:35:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:35:24,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114830562] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:35:24,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:35:24,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-30 05:35:24,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406789919] [2023-08-30 05:35:24,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:35:24,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:35:24,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:35:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:35:24,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:35:24,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:35:24,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 825 places, 2643 transitions, 102908 flow. Second operand has 16 states, 16 states have (on average 182.75) internal successors, (2924), 16 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:24,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:35:24,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:35:24,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:35:41,065 INFO L130 PetriNetUnfolder]: 7063/14332 cut-off events. [2023-08-30 05:35:41,066 INFO L131 PetriNetUnfolder]: For 1440970/1440970 co-relation queries the response was YES. [2023-08-30 05:35:41,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223206 conditions, 14332 events. 7063/14332 cut-off events. For 1440970/1440970 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 137065 event pairs, 1233 based on Foata normal form. 4/14336 useless extension candidates. Maximal degree in co-relation 222929. Up to 5055 conditions per place. [2023-08-30 05:35:41,343 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 1786 selfloop transitions, 936 changer transitions 4/2726 dead transitions. [2023-08-30 05:35:41,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 850 places, 2726 transitions, 109568 flow [2023-08-30 05:35:41,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 05:35:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 05:35:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4826 transitions. [2023-08-30 05:35:41,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42377941693010185 [2023-08-30 05:35:41,346 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4826 transitions. [2023-08-30 05:35:41,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4826 transitions. [2023-08-30 05:35:41,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:35:41,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4826 transitions. [2023-08-30 05:35:41,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 185.6153846153846) internal successors, (4826), 26 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:41,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 438.0) internal successors, (11826), 27 states have internal predecessors, (11826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:41,354 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 438.0) internal successors, (11826), 27 states have internal predecessors, (11826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:41,354 INFO L175 Difference]: Start difference. First operand has 825 places, 2643 transitions, 102908 flow. Second operand 26 states and 4826 transitions. [2023-08-30 05:35:41,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 850 places, 2726 transitions, 109568 flow [2023-08-30 05:36:14,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 846 places, 2726 transitions, 109316 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-08-30 05:36:14,196 INFO L231 Difference]: Finished difference. Result has 849 places, 2643 transitions, 104715 flow [2023-08-30 05:36:14,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=102636, PETRI_DIFFERENCE_MINUEND_PLACES=821, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=933, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=104715, PETRI_PLACES=849, PETRI_TRANSITIONS=2643} [2023-08-30 05:36:14,198 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 820 predicate places. [2023-08-30 05:36:14,198 INFO L495 AbstractCegarLoop]: Abstraction has has 849 places, 2643 transitions, 104715 flow [2023-08-30 05:36:14,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 182.75) internal successors, (2924), 16 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:36:14,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:36:14,198 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:36:14,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2023-08-30 05:36:14,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:36:14,399 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:36:14,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:36:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash 307762137, now seen corresponding path program 72 times [2023-08-30 05:36:14,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:36:14,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555605772] [2023-08-30 05:36:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:36:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:36:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:36:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:36:14,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:36:14,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555605772] [2023-08-30 05:36:14,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555605772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:36:14,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334357773] [2023-08-30 05:36:14,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:36:14,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:36:14,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:36:14,477 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:36:14,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-08-30 05:36:14,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 05:36:14,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:36:14,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:36:14,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:36:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:36:14,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:36:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:36:14,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334357773] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:36:14,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:36:14,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-30 05:36:14,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172871841] [2023-08-30 05:36:14,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:36:14,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:36:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:36:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:36:14,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:36:14,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:36:14,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 849 places, 2643 transitions, 104715 flow. Second operand has 15 states, 15 states have (on average 182.86666666666667) internal successors, (2743), 15 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:36:14,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:36:14,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:36:14,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:36:30,959 INFO L130 PetriNetUnfolder]: 7206/14623 cut-off events. [2023-08-30 05:36:30,959 INFO L131 PetriNetUnfolder]: For 1575523/1575523 co-relation queries the response was YES. [2023-08-30 05:36:31,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232343 conditions, 14623 events. 7206/14623 cut-off events. For 1575523/1575523 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 139923 event pairs, 511 based on Foata normal form. 92/14715 useless extension candidates. Maximal degree in co-relation 232063. Up to 10846 conditions per place. [2023-08-30 05:36:31,238 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 2058 selfloop transitions, 779 changer transitions 0/2837 dead transitions. [2023-08-30 05:36:31,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 868 places, 2837 transitions, 116256 flow [2023-08-30 05:36:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 05:36:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 05:36:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4114 transitions. [2023-08-30 05:36:31,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269406392694064 [2023-08-30 05:36:31,241 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4114 transitions. [2023-08-30 05:36:31,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4114 transitions. [2023-08-30 05:36:31,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:36:31,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4114 transitions. [2023-08-30 05:36:31,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 187.0) internal successors, (4114), 22 states have internal predecessors, (4114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:36:31,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 438.0) internal successors, (10074), 23 states have internal predecessors, (10074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:36:31,248 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 438.0) internal successors, (10074), 23 states have internal predecessors, (10074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:36:31,248 INFO L175 Difference]: Start difference. First operand has 849 places, 2643 transitions, 104715 flow. Second operand 22 states and 4114 transitions. [2023-08-30 05:36:31,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 868 places, 2837 transitions, 116256 flow [2023-08-30 05:37:05,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 852 places, 2837 transitions, 114223 flow, removed 132 selfloop flow, removed 16 redundant places. [2023-08-30 05:37:05,538 INFO L231 Difference]: Finished difference. Result has 859 places, 2708 transitions, 107910 flow [2023-08-30 05:37:05,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=102131, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=708, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1877, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=107910, PETRI_PLACES=859, PETRI_TRANSITIONS=2708} [2023-08-30 05:37:05,541 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 830 predicate places. [2023-08-30 05:37:05,541 INFO L495 AbstractCegarLoop]: Abstraction has has 859 places, 2708 transitions, 107910 flow [2023-08-30 05:37:05,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 182.86666666666667) internal successors, (2743), 15 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:37:05,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:37:05,542 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:37:05,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2023-08-30 05:37:05,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:37:05,747 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:37:05,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:37:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash -651354091, now seen corresponding path program 73 times [2023-08-30 05:37:05,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:37:05,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58283680] [2023-08-30 05:37:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:37:05,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:37:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:37:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:37:05,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:37:05,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58283680] [2023-08-30 05:37:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58283680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:37:05,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157818054] [2023-08-30 05:37:05,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:37:05,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:37:05,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:37:05,813 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:37:05,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-08-30 05:37:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:37:05,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:37:05,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:37:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:37:05,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:37:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:37:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157818054] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:37:06,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:37:06,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-08-30 05:37:06,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916564135] [2023-08-30 05:37:06,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:37:06,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:37:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:37:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:37:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:37:06,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:37:06,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 859 places, 2708 transitions, 107910 flow. Second operand has 16 states, 16 states have (on average 182.9375) internal successors, (2927), 16 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:37:06,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:37:06,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:37:06,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:37:23,916 INFO L130 PetriNetUnfolder]: 7159/14564 cut-off events. [2023-08-30 05:37:23,917 INFO L131 PetriNetUnfolder]: For 1528697/1528697 co-relation queries the response was YES. [2023-08-30 05:37:24,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231726 conditions, 14564 events. 7159/14564 cut-off events. For 1528697/1528697 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 139503 event pairs, 343 based on Foata normal form. 68/14632 useless extension candidates. Maximal degree in co-relation 231441. Up to 7221 conditions per place. [2023-08-30 05:37:24,210 INFO L137 encePairwiseOnDemand]: 432/438 looper letters, 1778 selfloop transitions, 1012 changer transitions 7/2797 dead transitions. [2023-08-30 05:37:24,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 2797 transitions, 115331 flow [2023-08-30 05:37:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 05:37:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 05:37:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5556 transitions. [2023-08-30 05:37:24,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228310502283105 [2023-08-30 05:37:24,213 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5556 transitions. [2023-08-30 05:37:24,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5556 transitions. [2023-08-30 05:37:24,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:37:24,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5556 transitions. [2023-08-30 05:37:24,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 185.2) internal successors, (5556), 30 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:37:24,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 438.0) internal successors, (13578), 31 states have internal predecessors, (13578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:37:24,222 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 438.0) internal successors, (13578), 31 states have internal predecessors, (13578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:37:24,223 INFO L175 Difference]: Start difference. First operand has 859 places, 2708 transitions, 107910 flow. Second operand 30 states and 5556 transitions. [2023-08-30 05:37:24,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 2797 transitions, 115331 flow [2023-08-30 05:38:00,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 870 places, 2797 transitions, 113216 flow, removed 504 selfloop flow, removed 17 redundant places. [2023-08-30 05:38:00,858 INFO L231 Difference]: Finished difference. Result has 874 places, 2717 transitions, 108800 flow [2023-08-30 05:38:00,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=104910, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=981, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1702, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=108800, PETRI_PLACES=874, PETRI_TRANSITIONS=2717} [2023-08-30 05:38:00,860 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 845 predicate places. [2023-08-30 05:38:00,861 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 2717 transitions, 108800 flow [2023-08-30 05:38:00,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 182.9375) internal successors, (2927), 16 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:38:00,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:38:00,861 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:38:00,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2023-08-30 05:38:01,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-08-30 05:38:01,062 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:38:01,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:38:01,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1881075648, now seen corresponding path program 74 times [2023-08-30 05:38:01,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:38:01,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020424481] [2023-08-30 05:38:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:38:01,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:38:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:38:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:38:01,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:38:01,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020424481] [2023-08-30 05:38:01,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020424481] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:38:01,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424024429] [2023-08-30 05:38:01,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:38:01,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:38:01,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:38:01,131 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:38:01,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-08-30 05:38:01,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:38:01,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:38:01,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:38:01,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:38:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:38:01,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:38:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:38:01,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424024429] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:38:01,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:38:01,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-08-30 05:38:01,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594708569] [2023-08-30 05:38:01,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:38:01,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:38:01,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:38:01,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:38:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:38:01,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 438 [2023-08-30 05:38:01,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 2717 transitions, 108800 flow. Second operand has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:38:01,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:38:01,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 438 [2023-08-30 05:38:01,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15