./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/clever.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/clever.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 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e --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 05:23:53,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:23:53,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:23:53,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:23:53,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:23:53,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:23:53,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:23:53,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:23:53,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:23:53,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:23:53,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:23:53,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:23:53,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:23:53,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:23:53,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:23:53,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:23:53,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:23:53,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:23:53,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:23:53,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:23:53,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:23:53,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:23:53,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:23:53,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:23:53,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:23:53,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:23:53,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:23:53,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:23:53,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:23:53,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:23:53,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:23:53,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:23:53,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:23:53,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:23:53,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:23:53,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:23:53,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:23:53,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:23:53,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:23:53,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:23:53,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:23:53,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:23:53,274 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:23:53,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:23:53,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:23:53,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:23:53,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:23:53,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:23:53,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:23:53,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:23:53,277 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:23:53,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:23:53,278 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:23:53,278 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:23:53,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:23:53,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:23:53,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:23:53,279 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:23:53,279 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:23:53,279 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:23:53,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:23:53,279 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:23:53,280 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:23:53,280 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:23:53,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:23:53,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:23:53,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:23:53,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:23:53,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:23:53,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:23:53,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:23:53,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:23:53,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:23:53,281 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:23:53,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:23:53,282 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:23:53,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:23:53,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:23:53,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:23:53,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:23:53,558 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:23:53,559 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:23:53,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/clever.wvr.c [2023-08-30 05:23:54,591 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:23:54,795 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:23:54,795 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c [2023-08-30 05:23:54,801 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c8ab1929/ec1b333b1ac84162a7d980ab7ef286ee/FLAG1d8a18b11 [2023-08-30 05:23:54,812 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c8ab1929/ec1b333b1ac84162a7d980ab7ef286ee [2023-08-30 05:23:54,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:23:54,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:23:54,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:23:54,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:23:54,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:23:54,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:23:54" (1/1) ... [2023-08-30 05:23:54,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67226c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:54, skipping insertion in model container [2023-08-30 05:23:54,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:23:54" (1/1) ... [2023-08-30 05:23:54,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:23:54,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:23:54,979 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/clever.wvr.c[2133,2146] [2023-08-30 05:23:54,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:23:54,991 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:23:55,019 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/clever.wvr.c[2133,2146] [2023-08-30 05:23:55,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:23:55,033 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:23:55,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55 WrapperNode [2023-08-30 05:23:55,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:23:55,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:23:55,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:23:55,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:23:55,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,072 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2023-08-30 05:23:55,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:23:55,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:23:55,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:23:55,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:23:55,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:23:55,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:23:55,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:23:55,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:23:55,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (1/1) ... [2023-08-30 05:23:55,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:23:55,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:23:55,131 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 05:23:55,142 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 05:23:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:23:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:23:55,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:23:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:23:55,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:23:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:23:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:23:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:23:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:23:55,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:23:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:23:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:23:55,172 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 05:23:55,242 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:23:55,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:23:55,451 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:23:55,457 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:23:55,458 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 05:23:55,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:23:55 BoogieIcfgContainer [2023-08-30 05:23:55,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:23:55,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:23:55,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:23:55,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:23:55,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:23:54" (1/3) ... [2023-08-30 05:23:55,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6272c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:23:55, skipping insertion in model container [2023-08-30 05:23:55,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:23:55" (2/3) ... [2023-08-30 05:23:55,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6272c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:23:55, skipping insertion in model container [2023-08-30 05:23:55,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:23:55" (3/3) ... [2023-08-30 05:23:55,466 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-08-30 05:23:55,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:23:55,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 05:23:55,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:23:55,513 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 05:23:55,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 131 transitions, 278 flow [2023-08-30 05:23:55,568 INFO L130 PetriNetUnfolder]: 9/129 cut-off events. [2023-08-30 05:23:55,568 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:23:55,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 9/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-08-30 05:23:55,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 131 transitions, 278 flow [2023-08-30 05:23:55,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 125 transitions, 262 flow [2023-08-30 05:23:55,578 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:23:55,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 125 transitions, 262 flow [2023-08-30 05:23:55,585 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 125 transitions, 262 flow [2023-08-30 05:23:55,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 262 flow [2023-08-30 05:23:55,617 INFO L130 PetriNetUnfolder]: 9/125 cut-off events. [2023-08-30 05:23:55,618 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:23:55,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 9/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-08-30 05:23:55,621 INFO L119 LiptonReduction]: Number of co-enabled transitions 972 [2023-08-30 05:23:59,142 INFO L134 LiptonReduction]: Checked pairs total: 946 [2023-08-30 05:23:59,143 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-30 05:23:59,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:23:59,160 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;@1616a740, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:23:59,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 05:23:59,161 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 05:23:59,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:23:59,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:23:59,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:23:59,163 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 05:23:59,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:23:59,167 INFO L85 PathProgramCache]: Analyzing trace with hash 486, now seen corresponding path program 1 times [2023-08-30 05:23:59,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:23:59,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603664748] [2023-08-30 05:23:59,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:23:59,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:23:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:23:59,247 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 05:23:59,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:23:59,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603664748] [2023-08-30 05:23:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603664748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:23:59,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:23:59,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:23:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809545674] [2023-08-30 05:23:59,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:23:59,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:23:59,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:23:59,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:23:59,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:23:59,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 258 [2023-08-30 05:23:59,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:23:59,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 258 [2023-08-30 05:23:59,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:23:59,312 INFO L130 PetriNetUnfolder]: 75/122 cut-off events. [2023-08-30 05:23:59,312 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 05:23:59,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 122 events. 75/122 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 266 event pairs, 35 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 210. Up to 123 conditions per place. [2023-08-30 05:23:59,314 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 21 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-30 05:23:59,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 96 flow [2023-08-30 05:23:59,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:23:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:23:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 264 transitions. [2023-08-30 05:23:59,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2023-08-30 05:23:59,328 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 264 transitions. [2023-08-30 05:23:59,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 264 transitions. [2023-08-30 05:23:59,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:23:59,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 264 transitions. [2023-08-30 05:23:59,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 132.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,336 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,337 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 60 flow. Second operand 2 states and 264 transitions. [2023-08-30 05:23:59,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 96 flow [2023-08-30 05:23:59,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 05:23:59,348 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 46 flow [2023-08-30 05:23:59,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=21, 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=22, PETRI_TRANSITIONS=21} [2023-08-30 05:23:59,355 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2023-08-30 05:23:59,355 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 46 flow [2023-08-30 05:23:59,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:23:59,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:23:59,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:23:59,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:23:59,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:23:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash 478579, now seen corresponding path program 1 times [2023-08-30 05:23:59,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:23:59,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014322693] [2023-08-30 05:23:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:23:59,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:23:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:23:59,537 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 05:23:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:23:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014322693] [2023-08-30 05:23:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014322693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:23:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:23:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:23:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388409106] [2023-08-30 05:23:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:23:59,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:23:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:23:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:23:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:23:59,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 258 [2023-08-30 05:23:59,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:23:59,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 258 [2023-08-30 05:23:59,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:23:59,600 INFO L130 PetriNetUnfolder]: 69/111 cut-off events. [2023-08-30 05:23:59,601 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:23:59,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 111 events. 69/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 236 event pairs, 32 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 226. Up to 111 conditions per place. [2023-08-30 05:23:59,602 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-30 05:23:59,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 80 flow [2023-08-30 05:23:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:23:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:23:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-08-30 05:23:59,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2023-08-30 05:23:59,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-08-30 05:23:59,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-08-30 05:23:59,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:23:59,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-08-30 05:23:59,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,614 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 46 flow. Second operand 3 states and 366 transitions. [2023-08-30 05:23:59,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 80 flow [2023-08-30 05:23:59,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:23:59,615 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 44 flow [2023-08-30 05:23:59,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, 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=22, PETRI_TRANSITIONS=19} [2023-08-30 05:23:59,616 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2023-08-30 05:23:59,616 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 44 flow [2023-08-30 05:23:59,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:23:59,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:23:59,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:23:59,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:23:59,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:23:59,618 INFO L85 PathProgramCache]: Analyzing trace with hash 478578, now seen corresponding path program 1 times [2023-08-30 05:23:59,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:23:59,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606228055] [2023-08-30 05:23:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:23:59,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:23:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:23:59,676 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 05:23:59,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:23:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606228055] [2023-08-30 05:23:59,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606228055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:23:59,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:23:59,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:23:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655475961] [2023-08-30 05:23:59,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:23:59,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:23:59,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:23:59,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:23:59,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:23:59,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 258 [2023-08-30 05:23:59,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:23:59,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 258 [2023-08-30 05:23:59,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:23:59,740 INFO L130 PetriNetUnfolder]: 63/100 cut-off events. [2023-08-30 05:23:59,741 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:23:59,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 100 events. 63/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 200 event pairs, 29 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 205. Up to 100 conditions per place. [2023-08-30 05:23:59,742 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 05:23:59,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 74 flow [2023-08-30 05:23:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:23:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:23:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2023-08-30 05:23:59,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2023-08-30 05:23:59,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2023-08-30 05:23:59,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2023-08-30 05:23:59,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:23:59,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2023-08-30 05:23:59,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,748 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 44 flow. Second operand 3 states and 352 transitions. [2023-08-30 05:23:59,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 74 flow [2023-08-30 05:23:59,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:23:59,749 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 41 flow [2023-08-30 05:23:59,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=19, 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=21, PETRI_TRANSITIONS=17} [2023-08-30 05:23:59,750 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -7 predicate places. [2023-08-30 05:23:59,750 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 41 flow [2023-08-30 05:23:59,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:23:59,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:23:59,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:23:59,751 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 05:23:59,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:23:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash 459922979, now seen corresponding path program 1 times [2023-08-30 05:23:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:23:59,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744495900] [2023-08-30 05:23:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:23:59,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:23:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:23:59,887 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 05:23:59,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:23:59,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744495900] [2023-08-30 05:23:59,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744495900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:23:59,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:23:59,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:23:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208184060] [2023-08-30 05:23:59,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:23:59,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:23:59,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:23:59,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:23:59,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:23:59,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 258 [2023-08-30 05:23:59,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:23:59,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 258 [2023-08-30 05:23:59,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:23:59,960 INFO L130 PetriNetUnfolder]: 49/80 cut-off events. [2023-08-30 05:23:59,961 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:23:59,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 80 events. 49/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 141 event pairs, 22 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 166. Up to 80 conditions per place. [2023-08-30 05:23:59,962 INFO L137 encePairwiseOnDemand]: 256/258 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 05:23:59,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 71 flow [2023-08-30 05:23:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:23:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:23:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-30 05:23:59,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2023-08-30 05:23:59,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-30 05:23:59,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-30 05:23:59,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:23:59,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-30 05:23:59,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,971 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 41 flow. Second operand 3 states and 356 transitions. [2023-08-30 05:23:59,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 71 flow [2023-08-30 05:23:59,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:23:59,972 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 40 flow [2023-08-30 05:23:59,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, 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=21, PETRI_TRANSITIONS=16} [2023-08-30 05:23:59,973 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -7 predicate places. [2023-08-30 05:23:59,973 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 40 flow [2023-08-30 05:23:59,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:23:59,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:23:59,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:23:59,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:23:59,974 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 05:23:59,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:23:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash 459922978, now seen corresponding path program 1 times [2023-08-30 05:23:59,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:23:59,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509963063] [2023-08-30 05:23:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:23:59,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:23:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:00,028 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 05:24:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:00,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509963063] [2023-08-30 05:24:00,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509963063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:00,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:00,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:24:00,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959760882] [2023-08-30 05:24:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:00,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:24:00,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:00,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:24:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:24:00,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-30 05:24:00,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:00,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-30 05:24:00,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:00,102 INFO L130 PetriNetUnfolder]: 35/60 cut-off events. [2023-08-30 05:24:00,102 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:24:00,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 60 events. 35/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 15 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 127. Up to 60 conditions per place. [2023-08-30 05:24:00,102 INFO L137 encePairwiseOnDemand]: 256/258 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 05:24:00,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 68 flow [2023-08-30 05:24:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:24:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:24:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-08-30 05:24:00,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354005167958656 [2023-08-30 05:24:00,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-08-30 05:24:00,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-08-30 05:24:00,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:00,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-08-30 05:24:00,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,107 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 40 flow. Second operand 3 states and 337 transitions. [2023-08-30 05:24:00,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 68 flow [2023-08-30 05:24:00,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:00,107 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 39 flow [2023-08-30 05:24:00,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, 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=21, PETRI_TRANSITIONS=15} [2023-08-30 05:24:00,108 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -7 predicate places. [2023-08-30 05:24:00,108 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 39 flow [2023-08-30 05:24:00,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:00,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:00,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:24:00,125 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 05:24:00,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1323423244, now seen corresponding path program 1 times [2023-08-30 05:24:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:00,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120041695] [2023-08-30 05:24:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:00,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:00,247 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 05:24:00,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:00,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120041695] [2023-08-30 05:24:00,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120041695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:00,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:00,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:24:00,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304592725] [2023-08-30 05:24:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:00,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:24:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:24:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:24:00,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 258 [2023-08-30 05:24:00,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:00,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 258 [2023-08-30 05:24:00,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:00,309 INFO L130 PetriNetUnfolder]: 69/117 cut-off events. [2023-08-30 05:24:00,309 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:24:00,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 117 events. 69/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 287 event pairs, 15 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 245. Up to 73 conditions per place. [2023-08-30 05:24:00,310 INFO L137 encePairwiseOnDemand]: 254/258 looper letters, 23 selfloop transitions, 3 changer transitions 1/27 dead transitions. [2023-08-30 05:24:00,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 27 transitions, 120 flow [2023-08-30 05:24:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:24:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:24:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-08-30 05:24:00,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2023-08-30 05:24:00,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-08-30 05:24:00,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-08-30 05:24:00,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:00,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-08-30 05:24:00,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,316 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 39 flow. Second operand 3 states and 370 transitions. [2023-08-30 05:24:00,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 27 transitions, 120 flow [2023-08-30 05:24:00,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 27 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:00,318 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 57 flow [2023-08-30 05:24:00,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=38, 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=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-30 05:24:00,318 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -5 predicate places. [2023-08-30 05:24:00,319 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 57 flow [2023-08-30 05:24:00,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:00,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:00,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:24:00,320 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 05:24:00,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:00,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1533294240, now seen corresponding path program 1 times [2023-08-30 05:24:00,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:00,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188805933] [2023-08-30 05:24:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:00,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:00,364 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 05:24:00,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:00,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188805933] [2023-08-30 05:24:00,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188805933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:00,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:00,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:24:00,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651273636] [2023-08-30 05:24:00,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:00,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:24:00,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:00,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:24:00,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:24:00,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:24:00,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:00,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:24:00,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:00,452 INFO L130 PetriNetUnfolder]: 125/216 cut-off events. [2023-08-30 05:24:00,452 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 05:24:00,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 216 events. 125/216 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 680 event pairs, 11 based on Foata normal form. 8/202 useless extension candidates. Maximal degree in co-relation 522. Up to 79 conditions per place. [2023-08-30 05:24:00,454 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 40 selfloop transitions, 7 changer transitions 2/49 dead transitions. [2023-08-30 05:24:00,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 49 transitions, 246 flow [2023-08-30 05:24:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 584 transitions. [2023-08-30 05:24:00,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45271317829457364 [2023-08-30 05:24:00,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 584 transitions. [2023-08-30 05:24:00,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 584 transitions. [2023-08-30 05:24:00,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:00,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 584 transitions. [2023-08-30 05:24:00,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,461 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,461 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 57 flow. Second operand 5 states and 584 transitions. [2023-08-30 05:24:00,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 49 transitions, 246 flow [2023-08-30 05:24:00,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 49 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:00,463 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 105 flow [2023-08-30 05:24:00,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-08-30 05:24:00,464 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-30 05:24:00,464 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 105 flow [2023-08-30 05:24:00,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:00,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:00,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:24:00,465 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 05:24:00,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:00,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1474401878, now seen corresponding path program 2 times [2023-08-30 05:24:00,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:00,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930312119] [2023-08-30 05:24:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:00,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:00,506 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 05:24:00,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:00,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930312119] [2023-08-30 05:24:00,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930312119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:00,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:00,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:24:00,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79057698] [2023-08-30 05:24:00,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:00,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:24:00,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:00,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:24:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:24:00,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:24:00,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:00,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:24:00,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:00,597 INFO L130 PetriNetUnfolder]: 125/210 cut-off events. [2023-08-30 05:24:00,597 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-08-30 05:24:00,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 210 events. 125/210 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 638 event pairs, 17 based on Foata normal form. 4/214 useless extension candidates. Maximal degree in co-relation 654. Up to 92 conditions per place. [2023-08-30 05:24:00,599 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 32 selfloop transitions, 11 changer transitions 6/49 dead transitions. [2023-08-30 05:24:00,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 305 flow [2023-08-30 05:24:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2023-08-30 05:24:00,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2023-08-30 05:24:00,602 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2023-08-30 05:24:00,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2023-08-30 05:24:00,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:00,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2023-08-30 05:24:00,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,606 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,606 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 105 flow. Second operand 5 states and 579 transitions. [2023-08-30 05:24:00,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 305 flow [2023-08-30 05:24:00,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:24:00,609 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 170 flow [2023-08-30 05:24:00,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-30 05:24:00,610 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2023-08-30 05:24:00,610 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 170 flow [2023-08-30 05:24:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:00,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:00,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:24:00,611 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 05:24:00,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1824564861, now seen corresponding path program 1 times [2023-08-30 05:24:00,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:00,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598885560] [2023-08-30 05:24:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:00,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:00,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598885560] [2023-08-30 05:24:00,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598885560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:00,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121878698] [2023-08-30 05:24:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:00,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:00,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:00,672 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 05:24:00,685 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 05:24:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:00,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 05:24:00,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:00,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:00,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121878698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:00,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:00,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 05:24:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698346462] [2023-08-30 05:24:00,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:00,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:24:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:24:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:24:00,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:24:00,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:00,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:24:00,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:00,968 INFO L130 PetriNetUnfolder]: 131/230 cut-off events. [2023-08-30 05:24:00,968 INFO L131 PetriNetUnfolder]: For 345/345 co-relation queries the response was YES. [2023-08-30 05:24:00,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 230 events. 131/230 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 731 event pairs, 2 based on Foata normal form. 20/250 useless extension candidates. Maximal degree in co-relation 861. Up to 96 conditions per place. [2023-08-30 05:24:00,970 INFO L137 encePairwiseOnDemand]: 253/258 looper letters, 43 selfloop transitions, 9 changer transitions 4/56 dead transitions. [2023-08-30 05:24:00,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 419 flow [2023-08-30 05:24:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 583 transitions. [2023-08-30 05:24:00,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45193798449612405 [2023-08-30 05:24:00,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 583 transitions. [2023-08-30 05:24:00,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 583 transitions. [2023-08-30 05:24:00,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:00,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 583 transitions. [2023-08-30 05:24:00,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,974 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 170 flow. Second operand 5 states and 583 transitions. [2023-08-30 05:24:00,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 419 flow [2023-08-30 05:24:00,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 413 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 05:24:00,983 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 242 flow [2023-08-30 05:24:00,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-30 05:24:00,984 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2023-08-30 05:24:00,985 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 242 flow [2023-08-30 05:24:00,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:00,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:00,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:00,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 05:24:01,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:01,191 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 05:24:01,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash -435410164, now seen corresponding path program 1 times [2023-08-30 05:24:01,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:01,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317968126] [2023-08-30 05:24:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:01,468 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 05:24:01,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317968126] [2023-08-30 05:24:01,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317968126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970210405] [2023-08-30 05:24:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:01,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:01,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:01,470 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 05:24:01,472 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 05:24:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:01,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 05:24:01,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:08,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:08,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970210405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:08,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:08,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 05:24:08,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350321766] [2023-08-30 05:24:08,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:08,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:24:08,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:08,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:24:08,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=101, Unknown=3, NotChecked=0, Total=156 [2023-08-30 05:24:10,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:12,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:14,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:16,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:18,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:21,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:23,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:25,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:28,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:30,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:32,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:34,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:37,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:37,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 258 [2023-08-30 05:24:37,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:37,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:37,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 258 [2023-08-30 05:24:37,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:38,223 INFO L130 PetriNetUnfolder]: 260/455 cut-off events. [2023-08-30 05:24:38,223 INFO L131 PetriNetUnfolder]: For 832/832 co-relation queries the response was YES. [2023-08-30 05:24:38,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 455 events. 260/455 cut-off events. For 832/832 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1800 event pairs, 12 based on Foata normal form. 14/469 useless extension candidates. Maximal degree in co-relation 1870. Up to 184 conditions per place. [2023-08-30 05:24:38,226 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 65 selfloop transitions, 19 changer transitions 23/107 dead transitions. [2023-08-30 05:24:38,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 107 transitions, 909 flow [2023-08-30 05:24:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:24:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:24:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 934 transitions. [2023-08-30 05:24:38,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40223944875107664 [2023-08-30 05:24:38,229 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 934 transitions. [2023-08-30 05:24:38,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 934 transitions. [2023-08-30 05:24:38,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:38,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 934 transitions. [2023-08-30 05:24:38,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 103.77777777777777) internal successors, (934), 9 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:38,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:38,234 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:38,234 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 242 flow. Second operand 9 states and 934 transitions. [2023-08-30 05:24:38,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 107 transitions, 909 flow [2023-08-30 05:24:38,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 107 transitions, 899 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 05:24:38,239 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 428 flow [2023-08-30 05:24:38,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=428, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-08-30 05:24:38,240 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2023-08-30 05:24:38,240 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 428 flow [2023-08-30 05:24:38,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:38,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:38,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:38,248 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 05:24:38,442 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,SelfDestructingSolverStorable9 [2023-08-30 05:24:38,442 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 05:24:38,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:38,443 INFO L85 PathProgramCache]: Analyzing trace with hash 661680455, now seen corresponding path program 2 times [2023-08-30 05:24:38,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:38,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607210071] [2023-08-30 05:24:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:38,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:38,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607210071] [2023-08-30 05:24:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607210071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:24:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:24:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:24:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863609640] [2023-08-30 05:24:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:24:38,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:24:38,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:38,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:24:38,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:24:38,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:24:38,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:38,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:38,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:24:38,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:38,634 INFO L130 PetriNetUnfolder]: 204/350 cut-off events. [2023-08-30 05:24:38,635 INFO L131 PetriNetUnfolder]: For 1126/1126 co-relation queries the response was YES. [2023-08-30 05:24:38,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 350 events. 204/350 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1191 event pairs, 29 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 1632. Up to 152 conditions per place. [2023-08-30 05:24:38,637 INFO L137 encePairwiseOnDemand]: 253/258 looper letters, 55 selfloop transitions, 12 changer transitions 2/69 dead transitions. [2023-08-30 05:24:38,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 69 transitions, 709 flow [2023-08-30 05:24:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:24:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:24:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2023-08-30 05:24:38,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2023-08-30 05:24:38,640 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2023-08-30 05:24:38,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2023-08-30 05:24:38,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:38,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2023-08-30 05:24:38,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:38,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:38,643 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:38,644 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 428 flow. Second operand 5 states and 576 transitions. [2023-08-30 05:24:38,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 69 transitions, 709 flow [2023-08-30 05:24:38,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 69 transitions, 652 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-30 05:24:38,648 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 464 flow [2023-08-30 05:24:38,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=464, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-30 05:24:38,648 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2023-08-30 05:24:38,648 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 464 flow [2023-08-30 05:24:38,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:38,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:38,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:38,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 05:24:38,649 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 05:24:38,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:38,650 INFO L85 PathProgramCache]: Analyzing trace with hash 989482668, now seen corresponding path program 2 times [2023-08-30 05:24:38,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:38,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952310634] [2023-08-30 05:24:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:38,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:38,928 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 05:24:38,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:38,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952310634] [2023-08-30 05:24:38,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952310634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:38,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092105374] [2023-08-30 05:24:38,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:24:38,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:38,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:38,930 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 05:24:38,940 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 05:24:39,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:24:39,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:39,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:24:39,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:43,573 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 05:24:43,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:43,862 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 05:24:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092105374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:43,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:43,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 05:24:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433962517] [2023-08-30 05:24:43,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:43,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:24:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:24:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=111, Unknown=2, NotChecked=0, Total=156 [2023-08-30 05:24:44,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 258 [2023-08-30 05:24:44,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 464 flow. Second operand has 13 states, 13 states have (on average 97.84615384615384) internal successors, (1272), 13 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:44,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:44,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 258 [2023-08-30 05:24:44,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:46,105 INFO L130 PetriNetUnfolder]: 728/1252 cut-off events. [2023-08-30 05:24:46,106 INFO L131 PetriNetUnfolder]: For 5158/5158 co-relation queries the response was YES. [2023-08-30 05:24:46,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5860 conditions, 1252 events. 728/1252 cut-off events. For 5158/5158 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6147 event pairs, 72 based on Foata normal form. 8/1260 useless extension candidates. Maximal degree in co-relation 5836. Up to 337 conditions per place. [2023-08-30 05:24:46,114 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 161 selfloop transitions, 95 changer transitions 12/268 dead transitions. [2023-08-30 05:24:46,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 268 transitions, 2630 flow [2023-08-30 05:24:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 05:24:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 05:24:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1974 transitions. [2023-08-30 05:24:46,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40269277845777235 [2023-08-30 05:24:46,119 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1974 transitions. [2023-08-30 05:24:46,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1974 transitions. [2023-08-30 05:24:46,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:46,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1974 transitions. [2023-08-30 05:24:46,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.89473684210526) internal successors, (1974), 19 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 05:24:46,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 258.0) internal successors, (5160), 20 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,128 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 258.0) internal successors, (5160), 20 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,128 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 464 flow. Second operand 19 states and 1974 transitions. [2023-08-30 05:24:46,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 268 transitions, 2630 flow [2023-08-30 05:24:46,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 268 transitions, 2520 flow, removed 44 selfloop flow, removed 1 redundant places. [2023-08-30 05:24:46,158 INFO L231 Difference]: Finished difference. Result has 86 places, 143 transitions, 1677 flow [2023-08-30 05:24:46,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1677, PETRI_PLACES=86, PETRI_TRANSITIONS=143} [2023-08-30 05:24:46,160 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 58 predicate places. [2023-08-30 05:24:46,160 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 143 transitions, 1677 flow [2023-08-30 05:24:46,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 97.84615384615384) internal successors, (1272), 13 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:46,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:46,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:46,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 05:24:46,365 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 05:24:46,365 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 05:24:46,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash -208889644, now seen corresponding path program 3 times [2023-08-30 05:24:46,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:46,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458898921] [2023-08-30 05:24:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:46,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:46,680 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 05:24:46,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:46,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458898921] [2023-08-30 05:24:46,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458898921] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:46,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452132164] [2023-08-30 05:24:46,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:24:46,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:46,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:46,684 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 05:24:46,686 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 05:24:46,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:24:46,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:46,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:24:46,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:47,079 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 05:24:47,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:47,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452132164] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:47,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:47,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 05:24:47,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084990311] [2023-08-30 05:24:47,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:47,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:24:47,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:47,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:24:47,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:24:47,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 258 [2023-08-30 05:24:47,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 143 transitions, 1677 flow. Second operand has 13 states, 13 states have (on average 105.84615384615384) internal successors, (1376), 13 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:47,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:47,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 258 [2023-08-30 05:24:47,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:48,285 INFO L130 PetriNetUnfolder]: 1241/2113 cut-off events. [2023-08-30 05:24:48,285 INFO L131 PetriNetUnfolder]: For 11612/11612 co-relation queries the response was YES. [2023-08-30 05:24:48,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11558 conditions, 2113 events. 1241/2113 cut-off events. For 11612/11612 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11434 event pairs, 142 based on Foata normal form. 5/2118 useless extension candidates. Maximal degree in co-relation 11522. Up to 646 conditions per place. [2023-08-30 05:24:48,314 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 182 selfloop transitions, 119 changer transitions 11/312 dead transitions. [2023-08-30 05:24:48,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 312 transitions, 4049 flow [2023-08-30 05:24:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:24:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:24:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1108 transitions. [2023-08-30 05:24:48,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294573643410853 [2023-08-30 05:24:48,317 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1108 transitions. [2023-08-30 05:24:48,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1108 transitions. [2023-08-30 05:24:48,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:48,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1108 transitions. [2023-08-30 05:24:48,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 110.8) internal successors, (1108), 10 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:48,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 258.0) internal successors, (2838), 11 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:48,322 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 258.0) internal successors, (2838), 11 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:48,322 INFO L175 Difference]: Start difference. First operand has 86 places, 143 transitions, 1677 flow. Second operand 10 states and 1108 transitions. [2023-08-30 05:24:48,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 312 transitions, 4049 flow [2023-08-30 05:24:48,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 312 transitions, 3715 flow, removed 164 selfloop flow, removed 2 redundant places. [2023-08-30 05:24:48,350 INFO L231 Difference]: Finished difference. Result has 97 places, 218 transitions, 2814 flow [2023-08-30 05:24:48,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2814, PETRI_PLACES=97, PETRI_TRANSITIONS=218} [2023-08-30 05:24:48,351 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 69 predicate places. [2023-08-30 05:24:48,351 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 218 transitions, 2814 flow [2023-08-30 05:24:48,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 105.84615384615384) internal successors, (1376), 13 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:48,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:48,352 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:48,358 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 05:24:48,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:48,557 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 05:24:48,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash 952394115, now seen corresponding path program 1 times [2023-08-30 05:24:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:48,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886981980] [2023-08-30 05:24:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:48,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:48,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:48,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886981980] [2023-08-30 05:24:48,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886981980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:48,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081481034] [2023-08-30 05:24:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:48,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:48,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:48,629 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 05:24:48,631 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 05:24:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:48,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:24:48,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:48,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:48,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081481034] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:48,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:48,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-30 05:24:48,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020760618] [2023-08-30 05:24:48,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:48,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:24:48,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:24:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:24:48,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:24:48,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 218 transitions, 2814 flow. Second operand has 10 states, 10 states have (on average 110.7) internal successors, (1107), 10 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:48,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:48,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:24:48,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:49,629 INFO L130 PetriNetUnfolder]: 2095/3657 cut-off events. [2023-08-30 05:24:49,630 INFO L131 PetriNetUnfolder]: For 24748/24748 co-relation queries the response was YES. [2023-08-30 05:24:49,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20810 conditions, 3657 events. 2095/3657 cut-off events. For 24748/24748 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 23180 event pairs, 31 based on Foata normal form. 76/3733 useless extension candidates. Maximal degree in co-relation 20769. Up to 839 conditions per place. [2023-08-30 05:24:49,655 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 377 selfloop transitions, 142 changer transitions 1/520 dead transitions. [2023-08-30 05:24:49,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 520 transitions, 7187 flow [2023-08-30 05:24:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:24:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:24:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1385 transitions. [2023-08-30 05:24:49,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44735142118863047 [2023-08-30 05:24:49,658 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1385 transitions. [2023-08-30 05:24:49,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1385 transitions. [2023-08-30 05:24:49,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:49,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1385 transitions. [2023-08-30 05:24:49,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.41666666666667) internal successors, (1385), 12 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:49,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:49,665 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:49,665 INFO L175 Difference]: Start difference. First operand has 97 places, 218 transitions, 2814 flow. Second operand 12 states and 1385 transitions. [2023-08-30 05:24:49,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 520 transitions, 7187 flow [2023-08-30 05:24:49,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 520 transitions, 6927 flow, removed 105 selfloop flow, removed 6 redundant places. [2023-08-30 05:24:49,713 INFO L231 Difference]: Finished difference. Result has 110 places, 310 transitions, 4643 flow [2023-08-30 05:24:49,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4643, PETRI_PLACES=110, PETRI_TRANSITIONS=310} [2023-08-30 05:24:49,714 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2023-08-30 05:24:49,714 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 310 transitions, 4643 flow [2023-08-30 05:24:49,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.7) internal successors, (1107), 10 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:49,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:49,715 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:49,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 05:24:49,919 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,SelfDestructingSolverStorable13 [2023-08-30 05:24:49,920 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 05:24:49,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash 250208241, now seen corresponding path program 2 times [2023-08-30 05:24:49,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:49,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35189652] [2023-08-30 05:24:49,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35189652] [2023-08-30 05:24:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35189652] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094031906] [2023-08-30 05:24:49,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:24:49,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:49,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:49,975 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 05:24:49,977 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 05:24:50,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:24:50,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:50,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:24:50,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:50,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:24:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094031906] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:50,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-08-30 05:24:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039258554] [2023-08-30 05:24:50,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:50,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:24:50,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:50,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:24:50,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:24:50,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:24:50,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 310 transitions, 4643 flow. Second operand has 9 states, 9 states have (on average 111.11111111111111) internal successors, (1000), 9 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:50,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:50,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:24:50,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:51,048 INFO L130 PetriNetUnfolder]: 2380/4334 cut-off events. [2023-08-30 05:24:51,049 INFO L131 PetriNetUnfolder]: For 38047/38047 co-relation queries the response was YES. [2023-08-30 05:24:51,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27669 conditions, 4334 events. 2380/4334 cut-off events. For 38047/38047 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 29526 event pairs, 178 based on Foata normal form. 32/4366 useless extension candidates. Maximal degree in co-relation 27621. Up to 1311 conditions per place. [2023-08-30 05:24:51,082 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 294 selfloop transitions, 275 changer transitions 0/569 dead transitions. [2023-08-30 05:24:51,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 569 transitions, 9052 flow [2023-08-30 05:24:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 05:24:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 05:24:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1609 transitions. [2023-08-30 05:24:51,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545957918050944 [2023-08-30 05:24:51,087 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1609 transitions. [2023-08-30 05:24:51,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1609 transitions. [2023-08-30 05:24:51,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:24:51,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1609 transitions. [2023-08-30 05:24:51,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 114.92857142857143) internal successors, (1609), 14 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:51,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 258.0) internal successors, (3870), 15 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:51,104 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 258.0) internal successors, (3870), 15 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:51,104 INFO L175 Difference]: Start difference. First operand has 110 places, 310 transitions, 4643 flow. Second operand 14 states and 1609 transitions. [2023-08-30 05:24:51,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 569 transitions, 9052 flow [2023-08-30 05:24:51,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 569 transitions, 8633 flow, removed 203 selfloop flow, removed 2 redundant places. [2023-08-30 05:24:51,265 INFO L231 Difference]: Finished difference. Result has 127 places, 412 transitions, 6800 flow [2023-08-30 05:24:51,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=4328, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6800, PETRI_PLACES=127, PETRI_TRANSITIONS=412} [2023-08-30 05:24:51,265 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 99 predicate places. [2023-08-30 05:24:51,265 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 412 transitions, 6800 flow [2023-08-30 05:24:51,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.11111111111111) internal successors, (1000), 9 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:51,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:24:51,266 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:24:51,272 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 05:24:51,466 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,SelfDestructingSolverStorable14 [2023-08-30 05:24:51,467 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 05:24:51,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:24:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1414835732, now seen corresponding path program 3 times [2023-08-30 05:24:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:24:51,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302979769] [2023-08-30 05:24:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:24:51,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:24:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:24:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:51,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:24:51,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302979769] [2023-08-30 05:24:51,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302979769] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:24:51,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925836838] [2023-08-30 05:24:51,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:24:51,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:24:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:24:51,810 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 05:24:51,812 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 05:24:51,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:24:51,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:24:51,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 05:24:51,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:24:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:52,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:24:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:24:52,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925836838] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:24:52,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:24:52,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 05:24:52,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13173010] [2023-08-30 05:24:52,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:24:52,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:24:52,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:24:52,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:24:52,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-08-30 05:24:54,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:24:55,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 258 [2023-08-30 05:24:55,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 412 transitions, 6800 flow. Second operand has 19 states, 19 states have (on average 105.36842105263158) internal successors, (2002), 19 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:24:55,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:24:55,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 258 [2023-08-30 05:24:55,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:24:58,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:25:00,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:25:03,728 INFO L130 PetriNetUnfolder]: 3298/5950 cut-off events. [2023-08-30 05:25:03,730 INFO L131 PetriNetUnfolder]: For 64712/64712 co-relation queries the response was YES. [2023-08-30 05:25:03,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40263 conditions, 5950 events. 3298/5950 cut-off events. For 64712/64712 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 42191 event pairs, 258 based on Foata normal form. 18/5968 useless extension candidates. Maximal degree in co-relation 40210. Up to 2691 conditions per place. [2023-08-30 05:25:03,773 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 368 selfloop transitions, 434 changer transitions 21/823 dead transitions. [2023-08-30 05:25:03,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 823 transitions, 14470 flow [2023-08-30 05:25:03,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 05:25:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 05:25:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2759 transitions. [2023-08-30 05:25:03,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277519379844961 [2023-08-30 05:25:03,777 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2759 transitions. [2023-08-30 05:25:03,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2759 transitions. [2023-08-30 05:25:03,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:03,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2759 transitions. [2023-08-30 05:25:03,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 110.36) internal successors, (2759), 25 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:03,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 258.0) internal successors, (6708), 26 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:03,788 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 258.0) internal successors, (6708), 26 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:03,788 INFO L175 Difference]: Start difference. First operand has 127 places, 412 transitions, 6800 flow. Second operand 25 states and 2759 transitions. [2023-08-30 05:25:03,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 823 transitions, 14470 flow [2023-08-30 05:25:04,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 823 transitions, 14007 flow, removed 224 selfloop flow, removed 2 redundant places. [2023-08-30 05:25:04,058 INFO L231 Difference]: Finished difference. Result has 157 places, 661 transitions, 12803 flow [2023-08-30 05:25:04,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=6617, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=12803, PETRI_PLACES=157, PETRI_TRANSITIONS=661} [2023-08-30 05:25:04,059 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 129 predicate places. [2023-08-30 05:25:04,059 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 661 transitions, 12803 flow [2023-08-30 05:25:04,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.36842105263158) internal successors, (2002), 19 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:04,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:04,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:04,066 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 05:25:04,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:04,264 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 05:25:04,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash -373306196, now seen corresponding path program 4 times [2023-08-30 05:25:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:04,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393055668] [2023-08-30 05:25:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:04,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393055668] [2023-08-30 05:25:04,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393055668] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404269161] [2023-08-30 05:25:04,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:25:04,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:04,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:04,558 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 05:25:04,559 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 05:25:04,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:25:04,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:04,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 05:25:04,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:05,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:25:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404269161] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:05,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:05,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15 [2023-08-30 05:25:05,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983057052] [2023-08-30 05:25:05,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:25:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:25:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:25:06,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 258 [2023-08-30 05:25:06,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 661 transitions, 12803 flow. Second operand has 17 states, 17 states have (on average 105.52941176470588) internal successors, (1794), 17 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:06,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:06,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 258 [2023-08-30 05:25:06,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:10,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:25:13,942 INFO L130 PetriNetUnfolder]: 4155/7549 cut-off events. [2023-08-30 05:25:13,942 INFO L131 PetriNetUnfolder]: For 100191/100191 co-relation queries the response was YES. [2023-08-30 05:25:13,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55348 conditions, 7549 events. 4155/7549 cut-off events. For 100191/100191 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 56489 event pairs, 382 based on Foata normal form. 14/7563 useless extension candidates. Maximal degree in co-relation 55287. Up to 5575 conditions per place. [2023-08-30 05:25:14,001 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 774 selfloop transitions, 235 changer transitions 29/1038 dead transitions. [2023-08-30 05:25:14,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1038 transitions, 20728 flow [2023-08-30 05:25:14,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 05:25:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 05:25:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2358 transitions. [2023-08-30 05:25:14,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2023-08-30 05:25:14,006 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2358 transitions. [2023-08-30 05:25:14,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2358 transitions. [2023-08-30 05:25:14,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:14,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2358 transitions. [2023-08-30 05:25:14,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.28571428571429) internal successors, (2358), 21 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:14,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 258.0) internal successors, (5676), 22 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:14,014 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 258.0) internal successors, (5676), 22 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:14,014 INFO L175 Difference]: Start difference. First operand has 157 places, 661 transitions, 12803 flow. Second operand 21 states and 2358 transitions. [2023-08-30 05:25:14,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 1038 transitions, 20728 flow [2023-08-30 05:25:14,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1038 transitions, 18937 flow, removed 889 selfloop flow, removed 4 redundant places. [2023-08-30 05:25:14,657 INFO L231 Difference]: Finished difference. Result has 184 places, 823 transitions, 15597 flow [2023-08-30 05:25:14,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=11594, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=15597, PETRI_PLACES=184, PETRI_TRANSITIONS=823} [2023-08-30 05:25:14,658 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 156 predicate places. [2023-08-30 05:25:14,658 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 823 transitions, 15597 flow [2023-08-30 05:25:14,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.52941176470588) internal successors, (1794), 17 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:14,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:14,659 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:14,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 05:25:14,862 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,SelfDestructingSolverStorable16 [2023-08-30 05:25:14,863 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 05:25:14,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash -606026843, now seen corresponding path program 5 times [2023-08-30 05:25:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:14,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195673239] [2023-08-30 05:25:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:14,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:14,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195673239] [2023-08-30 05:25:14,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195673239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:14,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870815818] [2023-08-30 05:25:14,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:25:14,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:14,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:14,925 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 05:25:14,927 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 05:25:14,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 05:25:14,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:14,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:25:14,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:15,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:15,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870815818] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:15,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:15,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-30 05:25:15,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996858335] [2023-08-30 05:25:15,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:15,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:25:15,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:15,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:25:15,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:25:15,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:25:15,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 823 transitions, 15597 flow. Second operand has 10 states, 10 states have (on average 110.8) internal successors, (1108), 10 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:15,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:15,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:25:15,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:17,348 INFO L130 PetriNetUnfolder]: 4987/8938 cut-off events. [2023-08-30 05:25:17,348 INFO L131 PetriNetUnfolder]: For 123092/123092 co-relation queries the response was YES. [2023-08-30 05:25:17,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66255 conditions, 8938 events. 4987/8938 cut-off events. For 123092/123092 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 67600 event pairs, 392 based on Foata normal form. 152/9090 useless extension candidates. Maximal degree in co-relation 66183. Up to 3535 conditions per place. [2023-08-30 05:25:17,421 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 640 selfloop transitions, 621 changer transitions 0/1261 dead transitions. [2023-08-30 05:25:17,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 1261 transitions, 25355 flow [2023-08-30 05:25:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 05:25:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 05:25:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1608 transitions. [2023-08-30 05:25:17,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44518272425249167 [2023-08-30 05:25:17,424 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1608 transitions. [2023-08-30 05:25:17,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1608 transitions. [2023-08-30 05:25:17,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:17,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1608 transitions. [2023-08-30 05:25:17,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 114.85714285714286) internal successors, (1608), 14 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:17,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 258.0) internal successors, (3870), 15 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:17,429 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 258.0) internal successors, (3870), 15 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:17,429 INFO L175 Difference]: Start difference. First operand has 184 places, 823 transitions, 15597 flow. Second operand 14 states and 1608 transitions. [2023-08-30 05:25:17,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 1261 transitions, 25355 flow [2023-08-30 05:25:18,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 1261 transitions, 24814 flow, removed 262 selfloop flow, removed 5 redundant places. [2023-08-30 05:25:18,343 INFO L231 Difference]: Finished difference. Result has 200 places, 1006 transitions, 21638 flow [2023-08-30 05:25:18,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=15185, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=21638, PETRI_PLACES=200, PETRI_TRANSITIONS=1006} [2023-08-30 05:25:18,344 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 172 predicate places. [2023-08-30 05:25:18,344 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 1006 transitions, 21638 flow [2023-08-30 05:25:18,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.8) internal successors, (1108), 10 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:18,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:18,345 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:18,359 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 05:25:18,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 05:25:18,549 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 05:25:18,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2109694988, now seen corresponding path program 6 times [2023-08-30 05:25:18,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:18,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982630739] [2023-08-30 05:25:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:18,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:19,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982630739] [2023-08-30 05:25:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982630739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343264153] [2023-08-30 05:25:19,131 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:25:19,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:19,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:19,132 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 05:25:19,133 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 05:25:19,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 05:25:19,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:19,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 05:25:19,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:19,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:25:21,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343264153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:21,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:21,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15 [2023-08-30 05:25:21,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179454148] [2023-08-30 05:25:21,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:21,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:25:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:21,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:25:21,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:25:21,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 258 [2023-08-30 05:25:21,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 1006 transitions, 21638 flow. Second operand has 17 states, 17 states have (on average 105.52941176470588) internal successors, (1794), 17 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:21,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:21,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 258 [2023-08-30 05:25:21,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:29,850 INFO L130 PetriNetUnfolder]: 5767/10353 cut-off events. [2023-08-30 05:25:29,850 INFO L131 PetriNetUnfolder]: For 194177/194177 co-relation queries the response was YES. [2023-08-30 05:25:29,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85708 conditions, 10353 events. 5767/10353 cut-off events. For 194177/194177 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 80622 event pairs, 420 based on Foata normal form. 16/10369 useless extension candidates. Maximal degree in co-relation 85628. Up to 5331 conditions per place. [2023-08-30 05:25:29,939 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 488 selfloop transitions, 809 changer transitions 15/1312 dead transitions. [2023-08-30 05:25:29,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1312 transitions, 30064 flow [2023-08-30 05:25:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 05:25:29,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 05:25:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2208 transitions. [2023-08-30 05:25:29,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42790697674418604 [2023-08-30 05:25:29,942 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2208 transitions. [2023-08-30 05:25:29,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2208 transitions. [2023-08-30 05:25:29,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:29,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2208 transitions. [2023-08-30 05:25:29,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 110.4) internal successors, (2208), 20 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:29,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 258.0) internal successors, (5418), 21 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:29,949 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 258.0) internal successors, (5418), 21 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:29,949 INFO L175 Difference]: Start difference. First operand has 200 places, 1006 transitions, 21638 flow. Second operand 20 states and 2208 transitions. [2023-08-30 05:25:29,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 1312 transitions, 30064 flow [2023-08-30 05:25:31,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1312 transitions, 29827 flow, removed 111 selfloop flow, removed 2 redundant places. [2023-08-30 05:25:31,515 INFO L231 Difference]: Finished difference. Result has 226 places, 1205 transitions, 29565 flow [2023-08-30 05:25:31,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=21439, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=626, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=29565, PETRI_PLACES=226, PETRI_TRANSITIONS=1205} [2023-08-30 05:25:31,516 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 198 predicate places. [2023-08-30 05:25:31,516 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 1205 transitions, 29565 flow [2023-08-30 05:25:31,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.52941176470588) internal successors, (1794), 17 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:31,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:31,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:31,525 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 05:25:31,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:31,723 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 05:25:31,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1647556379, now seen corresponding path program 7 times [2023-08-30 05:25:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:31,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934688601] [2023-08-30 05:25:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:25:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:31,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934688601] [2023-08-30 05:25:31,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934688601] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122751723] [2023-08-30 05:25:31,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:25:31,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:31,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:31,769 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 05:25:31,771 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 05:25:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:31,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:25:31,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:31,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:25:31,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122751723] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:31,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:31,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-08-30 05:25:31,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709570256] [2023-08-30 05:25:31,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:31,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:25:31,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:31,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:25:31,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:25:32,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:25:32,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 1205 transitions, 29565 flow. Second operand has 9 states, 9 states have (on average 111.22222222222223) internal successors, (1001), 9 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:32,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:32,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:25:32,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:35,729 INFO L130 PetriNetUnfolder]: 6200/11058 cut-off events. [2023-08-30 05:25:35,730 INFO L131 PetriNetUnfolder]: For 248463/248463 co-relation queries the response was YES. [2023-08-30 05:25:35,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98951 conditions, 11058 events. 6200/11058 cut-off events. For 248463/248463 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 87221 event pairs, 74 based on Foata normal form. 104/11162 useless extension candidates. Maximal degree in co-relation 98862. Up to 2950 conditions per place. [2023-08-30 05:25:35,859 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 1143 selfloop transitions, 570 changer transitions 0/1713 dead transitions. [2023-08-30 05:25:35,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1713 transitions, 40954 flow [2023-08-30 05:25:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 05:25:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 05:25:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1716 transitions. [2023-08-30 05:25:35,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434108527131783 [2023-08-30 05:25:35,862 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1716 transitions. [2023-08-30 05:25:35,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1716 transitions. [2023-08-30 05:25:35,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:35,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1716 transitions. [2023-08-30 05:25:35,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 114.4) internal successors, (1716), 15 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:35,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 258.0) internal successors, (4128), 16 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:35,867 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 258.0) internal successors, (4128), 16 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:35,867 INFO L175 Difference]: Start difference. First operand has 226 places, 1205 transitions, 29565 flow. Second operand 15 states and 1716 transitions. [2023-08-30 05:25:35,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 1713 transitions, 40954 flow [2023-08-30 05:25:38,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1713 transitions, 39715 flow, removed 609 selfloop flow, removed 6 redundant places. [2023-08-30 05:25:38,054 INFO L231 Difference]: Finished difference. Result has 236 places, 1292 transitions, 32451 flow [2023-08-30 05:25:38,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=28193, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=32451, PETRI_PLACES=236, PETRI_TRANSITIONS=1292} [2023-08-30 05:25:38,055 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 208 predicate places. [2023-08-30 05:25:38,055 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 1292 transitions, 32451 flow [2023-08-30 05:25:38,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.22222222222223) internal successors, (1001), 9 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:38,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:38,056 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:38,060 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 05:25:38,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:38,256 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 05:25:38,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1115834550, now seen corresponding path program 8 times [2023-08-30 05:25:38,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:38,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271067138] [2023-08-30 05:25:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271067138] [2023-08-30 05:25:38,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271067138] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455405452] [2023-08-30 05:25:38,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:25:38,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:38,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:38,557 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 05:25:38,558 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 05:25:38,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:25:38,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:38,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 05:25:38,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:39,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:25:41,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455405452] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:41,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:41,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 16 [2023-08-30 05:25:41,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296942865] [2023-08-30 05:25:41,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:41,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 05:25:41,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:41,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 05:25:41,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-30 05:25:43,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:25:44,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 258 [2023-08-30 05:25:44,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 1292 transitions, 32451 flow. Second operand has 18 states, 18 states have (on average 104.38888888888889) internal successors, (1879), 18 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:44,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:25:44,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 258 [2023-08-30 05:25:44,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:25:50,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:25:55,231 INFO L130 PetriNetUnfolder]: 7344/13088 cut-off events. [2023-08-30 05:25:55,231 INFO L131 PetriNetUnfolder]: For 321078/321078 co-relation queries the response was YES. [2023-08-30 05:25:55,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122856 conditions, 13088 events. 7344/13088 cut-off events. For 321078/321078 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 105139 event pairs, 566 based on Foata normal form. 34/13122 useless extension candidates. Maximal degree in co-relation 122767. Up to 5997 conditions per place. [2023-08-30 05:25:55,378 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 573 selfloop transitions, 1178 changer transitions 21/1772 dead transitions. [2023-08-30 05:25:55,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1772 transitions, 47694 flow [2023-08-30 05:25:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 05:25:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 05:25:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2609 transitions. [2023-08-30 05:25:55,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213501291989664 [2023-08-30 05:25:55,382 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2609 transitions. [2023-08-30 05:25:55,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2609 transitions. [2023-08-30 05:25:55,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:25:55,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2609 transitions. [2023-08-30 05:25:55,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 108.70833333333333) internal successors, (2609), 24 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 05:25:55,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 258.0) internal successors, (6450), 25 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:55,391 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 258.0) internal successors, (6450), 25 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:55,391 INFO L175 Difference]: Start difference. First operand has 236 places, 1292 transitions, 32451 flow. Second operand 24 states and 2609 transitions. [2023-08-30 05:25:55,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1772 transitions, 47694 flow [2023-08-30 05:25:58,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 1772 transitions, 47011 flow, removed 65 selfloop flow, removed 5 redundant places. [2023-08-30 05:25:58,281 INFO L231 Difference]: Finished difference. Result has 265 places, 1632 transitions, 46483 flow [2023-08-30 05:25:58,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=32024, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=862, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=46483, PETRI_PLACES=265, PETRI_TRANSITIONS=1632} [2023-08-30 05:25:58,282 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 237 predicate places. [2023-08-30 05:25:58,282 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 1632 transitions, 46483 flow [2023-08-30 05:25:58,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 104.38888888888889) internal successors, (1879), 18 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:25:58,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:25:58,283 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:25:58,290 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 05:25:58,483 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,SelfDestructingSolverStorable20 [2023-08-30 05:25:58,483 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 05:25:58,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:25:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1560712288, now seen corresponding path program 9 times [2023-08-30 05:25:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:25:58,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694980381] [2023-08-30 05:25:58,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:25:58,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:25:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:25:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:58,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:25:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694980381] [2023-08-30 05:25:58,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694980381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:25:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152318812] [2023-08-30 05:25:58,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:25:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:25:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:25:58,830 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 05:25:58,832 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 05:25:59,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:25:59,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:25:59,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 05:25:59,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:25:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:59,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:25:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:25:59,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152318812] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:25:59,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:25:59,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 05:25:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421941843] [2023-08-30 05:25:59,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:25:59,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:25:59,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:25:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:25:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-08-30 05:26:00,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 258 [2023-08-30 05:26:00,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 1632 transitions, 46483 flow. Second operand has 19 states, 19 states have (on average 105.26315789473684) internal successors, (2000), 19 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:00,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:00,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 258 [2023-08-30 05:26:00,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:13,968 INFO L130 PetriNetUnfolder]: 10591/18733 cut-off events. [2023-08-30 05:26:13,968 INFO L131 PetriNetUnfolder]: For 552636/552636 co-relation queries the response was YES. [2023-08-30 05:26:14,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192579 conditions, 18733 events. 10591/18733 cut-off events. For 552636/552636 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 157117 event pairs, 809 based on Foata normal form. 43/18776 useless extension candidates. Maximal degree in co-relation 192482. Up to 6872 conditions per place. [2023-08-30 05:26:14,172 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 774 selfloop transitions, 1912 changer transitions 34/2720 dead transitions. [2023-08-30 05:26:14,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 2720 transitions, 83217 flow [2023-08-30 05:26:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 05:26:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 05:26:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3839 transitions. [2023-08-30 05:26:14,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251384274640089 [2023-08-30 05:26:14,177 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3839 transitions. [2023-08-30 05:26:14,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3839 transitions. [2023-08-30 05:26:14,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:14,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3839 transitions. [2023-08-30 05:26:14,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 109.68571428571428) internal successors, (3839), 35 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:14,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 258.0) internal successors, (9288), 36 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:14,187 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 258.0) internal successors, (9288), 36 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:14,188 INFO L175 Difference]: Start difference. First operand has 265 places, 1632 transitions, 46483 flow. Second operand 35 states and 3839 transitions. [2023-08-30 05:26:14,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 2720 transitions, 83217 flow [2023-08-30 05:26:19,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 2720 transitions, 80183 flow, removed 1441 selfloop flow, removed 4 redundant places. [2023-08-30 05:26:19,542 INFO L231 Difference]: Finished difference. Result has 311 places, 2467 transitions, 77934 flow [2023-08-30 05:26:19,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=44662, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=77934, PETRI_PLACES=311, PETRI_TRANSITIONS=2467} [2023-08-30 05:26:19,544 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 283 predicate places. [2023-08-30 05:26:19,544 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 2467 transitions, 77934 flow [2023-08-30 05:26:19,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.26315789473684) internal successors, (2000), 19 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:19,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:19,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:19,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-30 05:26:19,748 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,SelfDestructingSolverStorable21 [2023-08-30 05:26:19,748 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 05:26:19,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash -583609677, now seen corresponding path program 10 times [2023-08-30 05:26:19,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:19,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033360997] [2023-08-30 05:26:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:26:19,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:19,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033360997] [2023-08-30 05:26:19,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033360997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:19,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102986723] [2023-08-30 05:26:19,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:26:19,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:19,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:19,821 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 05:26:19,822 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 05:26:19,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:26:19,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:19,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 05:26:19,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:26:19,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:26:19,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102986723] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:19,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:19,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-30 05:26:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862621634] [2023-08-30 05:26:19,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:19,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:26:19,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:19,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:26:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:26:19,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 258 [2023-08-30 05:26:19,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 2467 transitions, 77934 flow. Second operand has 8 states, 8 states have (on average 115.125) internal successors, (921), 8 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:19,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:19,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 258 [2023-08-30 05:26:19,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:29,301 INFO L130 PetriNetUnfolder]: 8208/14661 cut-off events. [2023-08-30 05:26:29,301 INFO L131 PetriNetUnfolder]: For 540588/540588 co-relation queries the response was YES. [2023-08-30 05:26:29,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152234 conditions, 14661 events. 8208/14661 cut-off events. For 540588/540588 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 119793 event pairs, 618 based on Foata normal form. 956/15617 useless extension candidates. Maximal degree in co-relation 152122. Up to 9647 conditions per place. [2023-08-30 05:26:29,470 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 1578 selfloop transitions, 460 changer transitions 3/2041 dead transitions. [2023-08-30 05:26:29,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 2041 transitions, 67304 flow [2023-08-30 05:26:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:26:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:26:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2023-08-30 05:26:29,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465891472868217 [2023-08-30 05:26:29,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2023-08-30 05:26:29,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2023-08-30 05:26:29,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:29,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2023-08-30 05:26:29,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:29,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:29,473 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:29,473 INFO L175 Difference]: Start difference. First operand has 311 places, 2467 transitions, 77934 flow. Second operand 5 states and 601 transitions. [2023-08-30 05:26:29,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 2041 transitions, 67304 flow [2023-08-30 05:26:33,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 2041 transitions, 62425 flow, removed 1799 selfloop flow, removed 16 redundant places. [2023-08-30 05:26:33,562 INFO L231 Difference]: Finished difference. Result has 296 places, 1875 transitions, 56119 flow [2023-08-30 05:26:33,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=51626, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=56119, PETRI_PLACES=296, PETRI_TRANSITIONS=1875} [2023-08-30 05:26:33,564 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 268 predicate places. [2023-08-30 05:26:33,564 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 1875 transitions, 56119 flow [2023-08-30 05:26:33,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.125) internal successors, (921), 8 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:33,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:33,564 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:33,570 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 05:26:33,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:33,765 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 05:26:33,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:33,765 INFO L85 PathProgramCache]: Analyzing trace with hash -270961632, now seen corresponding path program 11 times [2023-08-30 05:26:33,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:33,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562536803] [2023-08-30 05:26:33,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:33,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:26:33,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:33,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562536803] [2023-08-30 05:26:33,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562536803] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:33,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685065953] [2023-08-30 05:26:33,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:26:33,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:33,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:33,873 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 05:26:33,874 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 05:26:33,935 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 05:26:33,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:33,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:26:33,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:26:34,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:26:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685065953] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:34,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:34,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-30 05:26:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244961070] [2023-08-30 05:26:34,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:34,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:26:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:26:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:26:34,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:26:34,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1875 transitions, 56119 flow. Second operand has 10 states, 10 states have (on average 111.4) internal successors, (1114), 10 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:34,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:34,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:26:34,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:42,334 INFO L130 PetriNetUnfolder]: 8444/15117 cut-off events. [2023-08-30 05:26:42,334 INFO L131 PetriNetUnfolder]: For 480153/480153 co-relation queries the response was YES. [2023-08-30 05:26:42,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152605 conditions, 15117 events. 8444/15117 cut-off events. For 480153/480153 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 123949 event pairs, 932 based on Foata normal form. 180/15297 useless extension candidates. Maximal degree in co-relation 152498. Up to 14013 conditions per place. [2023-08-30 05:26:42,503 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 1887 selfloop transitions, 152 changer transitions 0/2039 dead transitions. [2023-08-30 05:26:42,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 2039 transitions, 63509 flow [2023-08-30 05:26:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 05:26:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 05:26:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1509 transitions. [2023-08-30 05:26:42,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44991055456171736 [2023-08-30 05:26:42,505 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1509 transitions. [2023-08-30 05:26:42,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1509 transitions. [2023-08-30 05:26:42,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:42,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1509 transitions. [2023-08-30 05:26:42,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.07692307692308) internal successors, (1509), 13 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 05:26:42,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 258.0) internal successors, (3612), 14 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:42,508 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 258.0) internal successors, (3612), 14 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:42,508 INFO L175 Difference]: Start difference. First operand has 296 places, 1875 transitions, 56119 flow. Second operand 13 states and 1509 transitions. [2023-08-30 05:26:42,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 2039 transitions, 63509 flow [2023-08-30 05:26:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 2039 transitions, 63357 flow, removed 76 selfloop flow, removed 0 redundant places. [2023-08-30 05:26:46,424 INFO L231 Difference]: Finished difference. Result has 315 places, 1943 transitions, 58552 flow [2023-08-30 05:26:46,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=55718, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=58552, PETRI_PLACES=315, PETRI_TRANSITIONS=1943} [2023-08-30 05:26:46,425 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 287 predicate places. [2023-08-30 05:26:46,425 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 1943 transitions, 58552 flow [2023-08-30 05:26:46,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 111.4) internal successors, (1114), 10 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:46,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:26:46,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:26:46,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-30 05:26:46,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:46,626 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 05:26:46,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:26:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash -461296608, now seen corresponding path program 12 times [2023-08-30 05:26:46,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:26:46,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143174819] [2023-08-30 05:26:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:26:46,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:26:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:26:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:26:46,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:26:46,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143174819] [2023-08-30 05:26:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143174819] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:26:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405938695] [2023-08-30 05:26:46,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:26:46,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:26:46,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:26:46,701 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 05:26:46,703 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 05:26:46,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 05:26:46,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:26:46,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:26:46,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:26:46,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:26:46,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:26:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:26:46,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405938695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:26:46,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:26:46,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-08-30 05:26:46,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046279841] [2023-08-30 05:26:46,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:26:46,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:26:46,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:26:46,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:26:46,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:26:46,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:26:46,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 1943 transitions, 58552 flow. Second operand has 9 states, 9 states have (on average 111.22222222222223) internal successors, (1001), 9 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:46,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:26:46,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:26:46,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:26:55,845 INFO L130 PetriNetUnfolder]: 8412/15027 cut-off events. [2023-08-30 05:26:55,846 INFO L131 PetriNetUnfolder]: For 538350/538350 co-relation queries the response was YES. [2023-08-30 05:26:55,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159040 conditions, 15027 events. 8412/15027 cut-off events. For 538350/538350 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 123297 event pairs, 408 based on Foata normal form. 16/15043 useless extension candidates. Maximal degree in co-relation 158925. Up to 10049 conditions per place. [2023-08-30 05:26:56,022 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 1844 selfloop transitions, 210 changer transitions 0/2054 dead transitions. [2023-08-30 05:26:56,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 2054 transitions, 64422 flow [2023-08-30 05:26:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 05:26:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 05:26:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1712 transitions. [2023-08-30 05:26:56,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44237726098191216 [2023-08-30 05:26:56,024 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1712 transitions. [2023-08-30 05:26:56,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1712 transitions. [2023-08-30 05:26:56,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:26:56,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1712 transitions. [2023-08-30 05:26:56,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 114.13333333333334) internal successors, (1712), 15 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:56,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 258.0) internal successors, (4128), 16 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:56,028 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 258.0) internal successors, (4128), 16 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:26:56,028 INFO L175 Difference]: Start difference. First operand has 315 places, 1943 transitions, 58552 flow. Second operand 15 states and 1712 transitions. [2023-08-30 05:26:56,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 2054 transitions, 64422 flow [2023-08-30 05:27:00,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 2054 transitions, 63531 flow, removed 379 selfloop flow, removed 6 redundant places. [2023-08-30 05:27:00,682 INFO L231 Difference]: Finished difference. Result has 325 places, 1951 transitions, 58163 flow [2023-08-30 05:27:00,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=57058, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1925, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=58163, PETRI_PLACES=325, PETRI_TRANSITIONS=1951} [2023-08-30 05:27:00,683 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 297 predicate places. [2023-08-30 05:27:00,683 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 1951 transitions, 58163 flow [2023-08-30 05:27:00,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.22222222222223) internal successors, (1001), 9 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:00,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:00,683 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:00,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-30 05:27:00,884 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,SelfDestructingSolverStorable24 [2023-08-30 05:27:00,884 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 05:27:00,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:00,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1566824238, now seen corresponding path program 13 times [2023-08-30 05:27:00,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:00,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695012626] [2023-08-30 05:27:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:00,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:00,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:00,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695012626] [2023-08-30 05:27:00,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695012626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:00,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858027590] [2023-08-30 05:27:00,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:27:00,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:00,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:00,969 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 05:27:00,970 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 05:27:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:01,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:27:01,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:01,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:01,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858027590] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:01,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:01,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-30 05:27:01,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100983255] [2023-08-30 05:27:01,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:01,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:27:01,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:27:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:27:01,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:27:01,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 1951 transitions, 58163 flow. Second operand has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:01,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:01,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:27:01,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:10,567 INFO L130 PetriNetUnfolder]: 9409/16995 cut-off events. [2023-08-30 05:27:10,567 INFO L131 PetriNetUnfolder]: For 657744/657744 co-relation queries the response was YES. [2023-08-30 05:27:10,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179231 conditions, 16995 events. 9409/16995 cut-off events. For 657744/657744 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 143226 event pairs, 494 based on Foata normal form. 358/17353 useless extension candidates. Maximal degree in co-relation 179115. Up to 5945 conditions per place. [2023-08-30 05:27:10,917 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 1593 selfloop transitions, 688 changer transitions 125/2406 dead transitions. [2023-08-30 05:27:10,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 2406 transitions, 70062 flow [2023-08-30 05:27:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:27:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:27:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1377 transitions. [2023-08-30 05:27:10,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476744186046513 [2023-08-30 05:27:10,920 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1377 transitions. [2023-08-30 05:27:10,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1377 transitions. [2023-08-30 05:27:10,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:10,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1377 transitions. [2023-08-30 05:27:10,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.75) internal successors, (1377), 12 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:10,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:10,925 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:10,925 INFO L175 Difference]: Start difference. First operand has 325 places, 1951 transitions, 58163 flow. Second operand 12 states and 1377 transitions. [2023-08-30 05:27:10,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 2406 transitions, 70062 flow [2023-08-30 05:27:16,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 2406 transitions, 69518 flow, removed 237 selfloop flow, removed 4 redundant places. [2023-08-30 05:27:16,497 INFO L231 Difference]: Finished difference. Result has 338 places, 1887 transitions, 56371 flow [2023-08-30 05:27:16,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=50725, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=56371, PETRI_PLACES=338, PETRI_TRANSITIONS=1887} [2023-08-30 05:27:16,499 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 310 predicate places. [2023-08-30 05:27:16,499 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 1887 transitions, 56371 flow [2023-08-30 05:27:16,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:16,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:16,499 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:16,506 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 05:27:16,703 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,SelfDestructingSolverStorable25 [2023-08-30 05:27:16,704 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 05:27:16,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:16,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1234529484, now seen corresponding path program 14 times [2023-08-30 05:27:16,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:16,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406328521] [2023-08-30 05:27:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:16,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406328521] [2023-08-30 05:27:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406328521] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399018572] [2023-08-30 05:27:16,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:27:16,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:16,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:16,785 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 05:27:16,787 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 05:27:16,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:27:16,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:27:16,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:27:16,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:16,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:16,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399018572] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:16,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:16,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-08-30 05:27:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711913344] [2023-08-30 05:27:16,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:27:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:27:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:27:17,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:27:17,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 1887 transitions, 56371 flow. Second operand has 9 states, 9 states have (on average 111.33333333333333) internal successors, (1002), 9 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:17,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:17,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:27:17,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:25,372 INFO L130 PetriNetUnfolder]: 8767/15664 cut-off events. [2023-08-30 05:27:25,373 INFO L131 PetriNetUnfolder]: For 703361/703361 co-relation queries the response was YES. [2023-08-30 05:27:25,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174541 conditions, 15664 events. 8767/15664 cut-off events. For 703361/703361 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 127886 event pairs, 586 based on Foata normal form. 634/16298 useless extension candidates. Maximal degree in co-relation 174420. Up to 8042 conditions per place. [2023-08-30 05:27:25,567 INFO L137 encePairwiseOnDemand]: 253/258 looper letters, 1358 selfloop transitions, 840 changer transitions 0/2198 dead transitions. [2023-08-30 05:27:25,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 2198 transitions, 67929 flow [2023-08-30 05:27:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:27:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:27:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1275 transitions. [2023-08-30 05:27:25,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492600422832981 [2023-08-30 05:27:25,569 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1275 transitions. [2023-08-30 05:27:25,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1275 transitions. [2023-08-30 05:27:25,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:25,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1275 transitions. [2023-08-30 05:27:25,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.9090909090909) internal successors, (1275), 11 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:25,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 258.0) internal successors, (3096), 12 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:25,571 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 258.0) internal successors, (3096), 12 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:25,571 INFO L175 Difference]: Start difference. First operand has 338 places, 1887 transitions, 56371 flow. Second operand 11 states and 1275 transitions. [2023-08-30 05:27:25,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 2198 transitions, 67929 flow [2023-08-30 05:27:31,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 2198 transitions, 65738 flow, removed 952 selfloop flow, removed 6 redundant places. [2023-08-30 05:27:31,939 INFO L231 Difference]: Finished difference. Result has 346 places, 1967 transitions, 59863 flow [2023-08-30 05:27:31,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=53736, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=740, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1092, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=59863, PETRI_PLACES=346, PETRI_TRANSITIONS=1967} [2023-08-30 05:27:31,940 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 318 predicate places. [2023-08-30 05:27:31,940 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 1967 transitions, 59863 flow [2023-08-30 05:27:31,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.33333333333333) internal successors, (1002), 9 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:31,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:31,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:31,947 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 05:27:32,141 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,SelfDestructingSolverStorable26 [2023-08-30 05:27:32,141 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 05:27:32,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1497712035, now seen corresponding path program 15 times [2023-08-30 05:27:32,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:32,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13276096] [2023-08-30 05:27:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:32,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:32,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:32,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13276096] [2023-08-30 05:27:32,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13276096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:27:32,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:27:32,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:27:32,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974882712] [2023-08-30 05:27:32,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:27:32,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:27:32,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:32,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:27:32,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:27:32,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 258 [2023-08-30 05:27:32,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 1967 transitions, 59863 flow. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:32,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:32,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 258 [2023-08-30 05:27:32,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:38,337 INFO L130 PetriNetUnfolder]: 5668/10453 cut-off events. [2023-08-30 05:27:38,337 INFO L131 PetriNetUnfolder]: For 410437/410437 co-relation queries the response was YES. [2023-08-30 05:27:38,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115911 conditions, 10453 events. 5668/10453 cut-off events. For 410437/410437 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 83189 event pairs, 1369 based on Foata normal form. 472/10925 useless extension candidates. Maximal degree in co-relation 115788. Up to 6062 conditions per place. [2023-08-30 05:27:38,457 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 1080 selfloop transitions, 239 changer transitions 305/1624 dead transitions. [2023-08-30 05:27:38,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1624 transitions, 52989 flow [2023-08-30 05:27:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:27:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:27:38,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 481 transitions. [2023-08-30 05:27:38,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46608527131782945 [2023-08-30 05:27:38,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 481 transitions. [2023-08-30 05:27:38,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 481 transitions. [2023-08-30 05:27:38,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:38,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 481 transitions. [2023-08-30 05:27:38,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:38,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:38,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:38,460 INFO L175 Difference]: Start difference. First operand has 346 places, 1967 transitions, 59863 flow. Second operand 4 states and 481 transitions. [2023-08-30 05:27:38,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1624 transitions, 52989 flow [2023-08-30 05:27:41,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 1624 transitions, 51191 flow, removed 792 selfloop flow, removed 13 redundant places. [2023-08-30 05:27:41,597 INFO L231 Difference]: Finished difference. Result has 335 places, 1222 transitions, 35789 flow [2023-08-30 05:27:41,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=42614, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=35789, PETRI_PLACES=335, PETRI_TRANSITIONS=1222} [2023-08-30 05:27:41,598 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 307 predicate places. [2023-08-30 05:27:41,598 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 1222 transitions, 35789 flow [2023-08-30 05:27:41,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:41,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:41,599 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:41,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 05:27:41,599 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 05:27:41,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash -692783648, now seen corresponding path program 4 times [2023-08-30 05:27:41,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:41,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721568807] [2023-08-30 05:27:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:41,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:41,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:41,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721568807] [2023-08-30 05:27:41,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721568807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:41,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150139519] [2023-08-30 05:27:41,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:27:41,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:41,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:41,671 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 05:27:41,673 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 05:27:41,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:27:41,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:27:41,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:27:41,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:41,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:41,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150139519] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:41,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:41,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 11 [2023-08-30 05:27:41,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90755935] [2023-08-30 05:27:41,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:41,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:27:41,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:41,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:27:41,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:27:42,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:27:42,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 1222 transitions, 35789 flow. Second operand has 12 states, 12 states have (on average 110.66666666666667) internal successors, (1328), 12 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:42,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:42,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:27:42,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:47,592 INFO L130 PetriNetUnfolder]: 6863/12520 cut-off events. [2023-08-30 05:27:47,592 INFO L131 PetriNetUnfolder]: For 529957/529957 co-relation queries the response was YES. [2023-08-30 05:27:47,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138985 conditions, 12520 events. 6863/12520 cut-off events. For 529957/529957 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 98738 event pairs, 570 based on Foata normal form. 172/12692 useless extension candidates. Maximal degree in co-relation 138869. Up to 3237 conditions per place. [2023-08-30 05:27:47,740 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 944 selfloop transitions, 1097 changer transitions 0/2041 dead transitions. [2023-08-30 05:27:47,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 2041 transitions, 62561 flow [2023-08-30 05:27:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 05:27:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 05:27:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2645 transitions. [2023-08-30 05:27:47,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44573643410852715 [2023-08-30 05:27:47,743 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2645 transitions. [2023-08-30 05:27:47,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2645 transitions. [2023-08-30 05:27:47,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:47,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2645 transitions. [2023-08-30 05:27:47,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 115.0) internal successors, (2645), 23 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:47,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 258.0) internal successors, (6192), 24 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:47,748 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 258.0) internal successors, (6192), 24 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:47,748 INFO L175 Difference]: Start difference. First operand has 335 places, 1222 transitions, 35789 flow. Second operand 23 states and 2645 transitions. [2023-08-30 05:27:47,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 2041 transitions, 62561 flow [2023-08-30 05:27:51,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 2041 transitions, 61073 flow, removed 413 selfloop flow, removed 6 redundant places. [2023-08-30 05:27:51,427 INFO L231 Difference]: Finished difference. Result has 358 places, 1691 transitions, 54748 flow [2023-08-30 05:27:51,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=35013, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=681, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=54748, PETRI_PLACES=358, PETRI_TRANSITIONS=1691} [2023-08-30 05:27:51,428 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 330 predicate places. [2023-08-30 05:27:51,428 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 1691 transitions, 54748 flow [2023-08-30 05:27:51,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 110.66666666666667) internal successors, (1328), 12 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:51,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:27:51,429 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:27:51,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-30 05:27:51,630 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 05:27:51,631 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 05:27:51,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:27:51,631 INFO L85 PathProgramCache]: Analyzing trace with hash 820308504, now seen corresponding path program 5 times [2023-08-30 05:27:51,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:27:51,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401991811] [2023-08-30 05:27:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:27:51,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:27:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:27:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:51,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:27:51,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401991811] [2023-08-30 05:27:51,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401991811] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:27:51,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69267524] [2023-08-30 05:27:51,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:27:51,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:27:51,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:27:51,692 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 05:27:51,694 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 05:27:51,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:27:51,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:27:51,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:27:51,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:27:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:27:51,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:27:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:27:51,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69267524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:27:51,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:27:51,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 11 [2023-08-30 05:27:51,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548402474] [2023-08-30 05:27:51,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:27:51,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:27:51,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:27:51,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:27:51,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:27:52,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:27:52,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 1691 transitions, 54748 flow. Second operand has 12 states, 12 states have (on average 110.75) internal successors, (1329), 12 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:52,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:27:52,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:27:52,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:27:58,831 INFO L130 PetriNetUnfolder]: 6644/12170 cut-off events. [2023-08-30 05:27:58,831 INFO L131 PetriNetUnfolder]: For 568291/568291 co-relation queries the response was YES. [2023-08-30 05:27:58,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140412 conditions, 12170 events. 6644/12170 cut-off events. For 568291/568291 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 96531 event pairs, 142 based on Foata normal form. 112/12282 useless extension candidates. Maximal degree in co-relation 140288. Up to 2745 conditions per place. [2023-08-30 05:27:59,001 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 1229 selfloop transitions, 907 changer transitions 0/2136 dead transitions. [2023-08-30 05:27:59,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2136 transitions, 66539 flow [2023-08-30 05:27:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 05:27:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 05:27:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2854 transitions. [2023-08-30 05:27:59,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44248062015503875 [2023-08-30 05:27:59,004 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2854 transitions. [2023-08-30 05:27:59,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2854 transitions. [2023-08-30 05:27:59,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:27:59,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2854 transitions. [2023-08-30 05:27:59,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 114.16) internal successors, (2854), 25 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:59,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 258.0) internal successors, (6708), 26 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:59,010 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 258.0) internal successors, (6708), 26 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:27:59,010 INFO L175 Difference]: Start difference. First operand has 358 places, 1691 transitions, 54748 flow. Second operand 25 states and 2854 transitions. [2023-08-30 05:27:59,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2136 transitions, 66539 flow [2023-08-30 05:28:03,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 2136 transitions, 65334 flow, removed 551 selfloop flow, removed 4 redundant places. [2023-08-30 05:28:03,493 INFO L231 Difference]: Finished difference. Result has 382 places, 1703 transitions, 56528 flow [2023-08-30 05:28:03,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=52716, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=876, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=788, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=56528, PETRI_PLACES=382, PETRI_TRANSITIONS=1703} [2023-08-30 05:28:03,495 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 354 predicate places. [2023-08-30 05:28:03,495 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 1703 transitions, 56528 flow [2023-08-30 05:28:03,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 110.75) internal successors, (1329), 12 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:03,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:03,495 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:03,503 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 05:28:03,700 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 05:28:03,700 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 05:28:03,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:03,700 INFO L85 PathProgramCache]: Analyzing trace with hash 513313272, now seen corresponding path program 16 times [2023-08-30 05:28:03,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:03,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669914307] [2023-08-30 05:28:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:03,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:04,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:04,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669914307] [2023-08-30 05:28:04,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669914307] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:04,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422730726] [2023-08-30 05:28:04,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:28:04,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:04,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:04,002 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 05:28:04,004 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 05:28:04,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:28:04,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:04,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 05:28:04,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:04,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:41,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422730726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:41,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:41,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2023-08-30 05:28:41,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120049519] [2023-08-30 05:28:41,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:41,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 05:28:41,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:41,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 05:28:41,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=333, Unknown=18, NotChecked=0, Total=420 [2023-08-30 05:28:44,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:28:46,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:28:48,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:28:50,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:28:52,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:28:54,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:28:57,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:28:59,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:28:59,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 258 [2023-08-30 05:28:59,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1703 transitions, 56528 flow. Second operand has 21 states, 21 states have (on average 97.57142857142857) internal successors, (2049), 21 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 05:28:59,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:59,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 258 [2023-08-30 05:28:59,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:29:05,923 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse5 (* 4294967296 (div c_~k2~0 4294967296))) (.cse4 (+ c_~k2~0 (* 4294967296 (div c_~k1~0 4294967296))))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (< (+ c_~k2~0 .cse3 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (< .cse4 (+ .cse5 c_~k1~0 1)) (<= (+ .cse5 c_~k1~0) .cse4))) is different from false [2023-08-30 05:29:11,196 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1))) (and (exists ((~m~0 Int)) (and (<= ~m~0 1) (< 0 ~m~0) (= (mod (+ c_~k2~0 (* 4294967294 ~m~0)) 4294967296) 0))) (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (< (+ c_~k2~0 .cse3 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (= (mod (+ 4294967294 c_~k1~0) 4294967296) 0))) is different from false [2023-08-30 05:29:18,204 INFO L130 PetriNetUnfolder]: 7360/13545 cut-off events. [2023-08-30 05:29:18,204 INFO L131 PetriNetUnfolder]: For 680892/680892 co-relation queries the response was YES. [2023-08-30 05:29:18,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162970 conditions, 13545 events. 7360/13545 cut-off events. For 680892/680892 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 110175 event pairs, 594 based on Foata normal form. 18/13563 useless extension candidates. Maximal degree in co-relation 162841. Up to 12335 conditions per place. [2023-08-30 05:29:18,374 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 1828 selfloop transitions, 159 changer transitions 26/2013 dead transitions. [2023-08-30 05:29:18,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 2013 transitions, 69646 flow [2023-08-30 05:29:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 05:29:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 05:29:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1745 transitions. [2023-08-30 05:29:18,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39785681714546284 [2023-08-30 05:29:18,376 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1745 transitions. [2023-08-30 05:29:18,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1745 transitions. [2023-08-30 05:29:18,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:29:18,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1745 transitions. [2023-08-30 05:29:18,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.6470588235294) internal successors, (1745), 17 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:18,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 258.0) internal successors, (4644), 18 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:18,380 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 258.0) internal successors, (4644), 18 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:18,380 INFO L175 Difference]: Start difference. First operand has 382 places, 1703 transitions, 56528 flow. Second operand 17 states and 1745 transitions. [2023-08-30 05:29:18,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 2013 transitions, 69646 flow [2023-08-30 05:29:24,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 2013 transitions, 68062 flow, removed 588 selfloop flow, removed 7 redundant places. [2023-08-30 05:29:24,573 INFO L231 Difference]: Finished difference. Result has 400 places, 1840 transitions, 60320 flow [2023-08-30 05:29:24,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=55032, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=60320, PETRI_PLACES=400, PETRI_TRANSITIONS=1840} [2023-08-30 05:29:24,575 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 372 predicate places. [2023-08-30 05:29:24,575 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 1840 transitions, 60320 flow [2023-08-30 05:29:24,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 97.57142857142857) internal successors, (2049), 21 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 05:29:24,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:29:24,575 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:29:24,580 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 05:29:24,780 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 05:29:24,780 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 05:29:24,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:29:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1565600284, now seen corresponding path program 17 times [2023-08-30 05:29:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:29:24,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85518425] [2023-08-30 05:29:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:29:24,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:29:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:29:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:25,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:29:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85518425] [2023-08-30 05:29:25,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85518425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:29:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274834646] [2023-08-30 05:29:25,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:29:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:29:25,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:29:25,059 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 05:29:25,062 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 05:29:25,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 05:29:25,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:29:25,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 05:29:25,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:29:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:25,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:29:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:26,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274834646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:29:26,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:29:26,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-08-30 05:29:26,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750009848] [2023-08-30 05:29:26,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:29:26,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 05:29:26,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:29:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 05:29:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2023-08-30 05:29:28,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 258 [2023-08-30 05:29:28,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 1840 transitions, 60320 flow. Second operand has 24 states, 24 states have (on average 105.125) internal successors, (2523), 24 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:29:28,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:29:28,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 258 [2023-08-30 05:29:28,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:29:41,720 WARN L222 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 53 DAG size of output: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:29:48,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:29:56,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:29:58,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:30:01,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:30:03,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:30:10,635 INFO L130 PetriNetUnfolder]: 9282/17368 cut-off events. [2023-08-30 05:30:10,635 INFO L131 PetriNetUnfolder]: For 868809/868809 co-relation queries the response was YES. [2023-08-30 05:30:10,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213549 conditions, 17368 events. 9282/17368 cut-off events. For 868809/868809 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 148898 event pairs, 552 based on Foata normal form. 100/17468 useless extension candidates. Maximal degree in co-relation 213412. Up to 6139 conditions per place. [2023-08-30 05:30:10,865 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 958 selfloop transitions, 1624 changer transitions 198/2780 dead transitions. [2023-08-30 05:30:10,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 2780 transitions, 93656 flow [2023-08-30 05:30:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-30 05:30:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-30 05:30:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4052 transitions. [2023-08-30 05:30:10,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42447098261051747 [2023-08-30 05:30:10,869 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4052 transitions. [2023-08-30 05:30:10,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4052 transitions. [2023-08-30 05:30:10,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:30:10,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4052 transitions. [2023-08-30 05:30:10,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 109.51351351351352) internal successors, (4052), 37 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:10,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 258.0) internal successors, (9804), 38 states have internal predecessors, (9804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:10,877 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 258.0) internal successors, (9804), 38 states have internal predecessors, (9804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:10,877 INFO L175 Difference]: Start difference. First operand has 400 places, 1840 transitions, 60320 flow. Second operand 37 states and 4052 transitions. [2023-08-30 05:30:10,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 2780 transitions, 93656 flow [2023-08-30 05:30:18,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 2780 transitions, 92678 flow, removed 479 selfloop flow, removed 5 redundant places. [2023-08-30 05:30:18,683 INFO L231 Difference]: Finished difference. Result has 444 places, 2350 transitions, 83221 flow [2023-08-30 05:30:18,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=59290, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=83221, PETRI_PLACES=444, PETRI_TRANSITIONS=2350} [2023-08-30 05:30:18,685 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 416 predicate places. [2023-08-30 05:30:18,685 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 2350 transitions, 83221 flow [2023-08-30 05:30:18,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 105.125) internal successors, (2523), 24 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:18,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:30:18,685 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:30:18,690 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 05:30:18,885 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 05:30:18,886 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 05:30:18,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:30:18,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1641298301, now seen corresponding path program 18 times [2023-08-30 05:30:18,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:30:18,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100714067] [2023-08-30 05:30:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:30:18,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:30:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:30:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:19,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:30:19,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100714067] [2023-08-30 05:30:19,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100714067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:30:19,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353306984] [2023-08-30 05:30:19,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:30:19,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:30:19,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:30:19,308 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 05:30:19,313 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 05:30:19,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-30 05:30:19,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:30:19,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 05:30:19,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:30:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:20,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:30:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 05:30:21,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353306984] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:30:21,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:30:21,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 4] total 21 [2023-08-30 05:30:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389387694] [2023-08-30 05:30:21,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:30:21,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 05:30:21,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:30:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 05:30:21,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-08-30 05:30:23,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:30:26,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:30:27,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:30:27,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 258 [2023-08-30 05:30:27,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 2350 transitions, 83221 flow. Second operand has 23 states, 23 states have (on average 103.21739130434783) internal successors, (2374), 23 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:27,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:30:27,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 258 [2023-08-30 05:30:27,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:30:32,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 05:30:45,062 INFO L130 PetriNetUnfolder]: 9090/16889 cut-off events. [2023-08-30 05:30:45,063 INFO L131 PetriNetUnfolder]: For 879103/879103 co-relation queries the response was YES. [2023-08-30 05:30:45,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215270 conditions, 16889 events. 9090/16889 cut-off events. For 879103/879103 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 142761 event pairs, 762 based on Foata normal form. 6/16895 useless extension candidates. Maximal degree in co-relation 215120. Up to 16277 conditions per place. [2023-08-30 05:30:45,406 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 2318 selfloop transitions, 133 changer transitions 44/2495 dead transitions. [2023-08-30 05:30:45,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 2495 transitions, 90295 flow [2023-08-30 05:30:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 05:30:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 05:30:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2367 transitions. [2023-08-30 05:30:45,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41701902748414377 [2023-08-30 05:30:45,408 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2367 transitions. [2023-08-30 05:30:45,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2367 transitions. [2023-08-30 05:30:45,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:30:45,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2367 transitions. [2023-08-30 05:30:45,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 107.5909090909091) internal successors, (2367), 22 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:45,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 258.0) internal successors, (5934), 23 states have internal predecessors, (5934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:45,413 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 258.0) internal successors, (5934), 23 states have internal predecessors, (5934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:45,413 INFO L175 Difference]: Start difference. First operand has 444 places, 2350 transitions, 83221 flow. Second operand 22 states and 2367 transitions. [2023-08-30 05:30:45,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 2495 transitions, 90295 flow [2023-08-30 05:30:54,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 2495 transitions, 86923 flow, removed 1672 selfloop flow, removed 8 redundant places. [2023-08-30 05:30:54,317 INFO L231 Difference]: Finished difference. Result has 465 places, 2393 transitions, 81700 flow [2023-08-30 05:30:54,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=79883, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=81700, PETRI_PLACES=465, PETRI_TRANSITIONS=2393} [2023-08-30 05:30:54,319 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 437 predicate places. [2023-08-30 05:30:54,319 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 2393 transitions, 81700 flow [2023-08-30 05:30:54,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 103.21739130434783) internal successors, (2374), 23 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:54,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:30:54,319 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:30:54,325 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 05:30:54,520 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 05:30:54,520 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 05:30:54,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:30:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash -982478424, now seen corresponding path program 19 times [2023-08-30 05:30:54,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:30:54,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964839503] [2023-08-30 05:30:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:30:54,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:30:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:30:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:54,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:30:54,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964839503] [2023-08-30 05:30:54,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964839503] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:30:54,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291511857] [2023-08-30 05:30:54,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:30:54,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:30:54,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:30:54,959 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 05:30:54,960 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 05:30:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:30:55,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 05:30:55,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:30:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:55,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:30:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:56,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291511857] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:30:56,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:30:56,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-30 05:30:56,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293631580] [2023-08-30 05:30:56,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:30:56,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 05:30:56,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:30:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 05:30:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2023-08-30 05:30:57,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 258 [2023-08-30 05:30:57,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 2393 transitions, 81700 flow. Second operand has 22 states, 22 states have (on average 105.27272727272727) internal successors, (2316), 22 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:30:57,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:30:57,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 258 [2023-08-30 05:30:57,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:31:03,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:31:06,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:31:10,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:31:20,079 INFO L130 PetriNetUnfolder]: 9579/17819 cut-off events. [2023-08-30 05:31:20,080 INFO L131 PetriNetUnfolder]: For 927608/927608 co-relation queries the response was YES. [2023-08-30 05:31:20,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224625 conditions, 17819 events. 9579/17819 cut-off events. For 927608/927608 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 152117 event pairs, 598 based on Foata normal form. 9/17828 useless extension candidates. Maximal degree in co-relation 224466. Up to 11539 conditions per place. [2023-08-30 05:31:20,497 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 1224 selfloop transitions, 1445 changer transitions 14/2683 dead transitions. [2023-08-30 05:31:20,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 2683 transitions, 96119 flow [2023-08-30 05:31:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 05:31:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 05:31:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2741 transitions. [2023-08-30 05:31:20,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42496124031007754 [2023-08-30 05:31:20,499 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2741 transitions. [2023-08-30 05:31:20,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2741 transitions. [2023-08-30 05:31:20,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:31:20,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2741 transitions. [2023-08-30 05:31:20,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 109.64) internal successors, (2741), 25 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 05:31:20,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 258.0) internal successors, (6708), 26 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:20,506 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 258.0) internal successors, (6708), 26 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:20,506 INFO L175 Difference]: Start difference. First operand has 465 places, 2393 transitions, 81700 flow. Second operand 25 states and 2741 transitions. [2023-08-30 05:31:20,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 2683 transitions, 96119 flow [2023-08-30 05:31:29,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 2683 transitions, 95744 flow, removed 147 selfloop flow, removed 10 redundant places. [2023-08-30 05:31:29,643 INFO L231 Difference]: Finished difference. Result has 487 places, 2530 transitions, 91667 flow [2023-08-30 05:31:29,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=81355, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1037, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=91667, PETRI_PLACES=487, PETRI_TRANSITIONS=2530} [2023-08-30 05:31:29,644 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 459 predicate places. [2023-08-30 05:31:29,644 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 2530 transitions, 91667 flow [2023-08-30 05:31:29,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 105.27272727272727) internal successors, (2316), 22 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:29,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:31:29,645 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:31:29,649 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 05:31:29,845 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 05:31:29,845 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 05:31:29,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:31:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1743013771, now seen corresponding path program 20 times [2023-08-30 05:31:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:31:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423921960] [2023-08-30 05:31:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:31:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:31:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:31:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:31:30,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:31:30,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423921960] [2023-08-30 05:31:30,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423921960] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:31:30,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613957684] [2023-08-30 05:31:30,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:31:30,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:31:30,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:31:30,314 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 05:31:30,316 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 05:31:30,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:31:30,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:31:30,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 05:31:30,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:31:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:31:31,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:31:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:31:32,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613957684] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:31:32,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:31:32,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 23 [2023-08-30 05:31:32,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029634739] [2023-08-30 05:31:32,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:31:32,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 05:31:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:31:32,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 05:31:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2023-08-30 05:31:33,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 258 [2023-08-30 05:31:33,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 2530 transitions, 91667 flow. Second operand has 25 states, 25 states have (on average 105.04) internal successors, (2626), 25 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:31:33,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:31:33,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 258 [2023-08-30 05:31:33,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:31:37,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:32:01,546 INFO L130 PetriNetUnfolder]: 10369/19159 cut-off events. [2023-08-30 05:32:01,546 INFO L131 PetriNetUnfolder]: For 1071268/1071268 co-relation queries the response was YES. [2023-08-30 05:32:01,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249931 conditions, 19159 events. 10369/19159 cut-off events. For 1071268/1071268 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 164124 event pairs, 616 based on Foata normal form. 7/19166 useless extension candidates. Maximal degree in co-relation 249764. Up to 11986 conditions per place. [2023-08-30 05:32:01,837 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 1227 selfloop transitions, 1663 changer transitions 52/2942 dead transitions. [2023-08-30 05:32:01,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 2942 transitions, 109165 flow [2023-08-30 05:32:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 05:32:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 05:32:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3822 transitions. [2023-08-30 05:32:01,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232558139534884 [2023-08-30 05:32:01,841 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3822 transitions. [2023-08-30 05:32:01,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3822 transitions. [2023-08-30 05:32:01,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:32:01,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3822 transitions. [2023-08-30 05:32:01,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 109.2) internal successors, (3822), 35 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:01,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 258.0) internal successors, (9288), 36 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:01,850 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 258.0) internal successors, (9288), 36 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:01,850 INFO L175 Difference]: Start difference. First operand has 487 places, 2530 transitions, 91667 flow. Second operand 35 states and 3822 transitions. [2023-08-30 05:32:01,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 2942 transitions, 109165 flow [2023-08-30 05:32:12,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 2942 transitions, 107750 flow, removed 688 selfloop flow, removed 8 redundant places. [2023-08-30 05:32:12,671 INFO L231 Difference]: Finished difference. Result has 524 places, 2763 transitions, 106009 flow [2023-08-30 05:32:12,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=90252, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1456, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1010, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=106009, PETRI_PLACES=524, PETRI_TRANSITIONS=2763} [2023-08-30 05:32:12,673 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 496 predicate places. [2023-08-30 05:32:12,673 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 2763 transitions, 106009 flow [2023-08-30 05:32:12,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 105.04) internal successors, (2626), 25 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:12,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:32:12,674 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:32:12,680 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 05:32:12,874 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 05:32:12,874 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 05:32:12,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:32:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2106389955, now seen corresponding path program 21 times [2023-08-30 05:32:12,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:32:12,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779966566] [2023-08-30 05:32:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:32:12,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:32:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:32:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:32:13,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:32:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779966566] [2023-08-30 05:32:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779966566] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:32:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177578663] [2023-08-30 05:32:13,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:32:13,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:32:13,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:32:13,263 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 05:32:13,264 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 05:32:13,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 05:32:13,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:32:13,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 05:32:13,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:32:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:32:13,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:32:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:32:14,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177578663] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:32:14,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:32:14,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 24 [2023-08-30 05:32:14,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323917949] [2023-08-30 05:32:14,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:32:14,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 05:32:14,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:32:14,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 05:32:14,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-08-30 05:32:16,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 258 [2023-08-30 05:32:16,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 2763 transitions, 106009 flow. Second operand has 26 states, 26 states have (on average 105.0) internal successors, (2730), 26 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:16,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:32:16,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 258 [2023-08-30 05:32:16,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:32:20,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:32:26,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:32:29,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:32:53,411 INFO L130 PetriNetUnfolder]: 11362/20821 cut-off events. [2023-08-30 05:32:53,411 INFO L131 PetriNetUnfolder]: For 1250275/1250275 co-relation queries the response was YES. [2023-08-30 05:32:53,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283314 conditions, 20821 events. 11362/20821 cut-off events. For 1250275/1250275 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 178702 event pairs, 646 based on Foata normal form. 7/20828 useless extension candidates. Maximal degree in co-relation 283136. Up to 12510 conditions per place. [2023-08-30 05:32:53,788 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 1291 selfloop transitions, 1897 changer transitions 63/3251 dead transitions. [2023-08-30 05:32:53,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 3251 transitions, 128440 flow [2023-08-30 05:32:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-30 05:32:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-30 05:32:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4461 transitions. [2023-08-30 05:32:53,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421724333522405 [2023-08-30 05:32:53,794 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4461 transitions. [2023-08-30 05:32:53,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4461 transitions. [2023-08-30 05:32:53,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:32:53,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4461 transitions. [2023-08-30 05:32:53,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 108.8048780487805) internal successors, (4461), 41 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:53,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 258.0) internal successors, (10836), 42 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:53,803 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 258.0) internal successors, (10836), 42 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:32:53,803 INFO L175 Difference]: Start difference. First operand has 524 places, 2763 transitions, 106009 flow. Second operand 41 states and 4461 transitions. [2023-08-30 05:32:53,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 3251 transitions, 128440 flow [2023-08-30 05:33:07,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 3251 transitions, 126577 flow, removed 911 selfloop flow, removed 11 redundant places. [2023-08-30 05:33:07,999 INFO L231 Difference]: Finished difference. Result has 563 places, 3057 transitions, 124593 flow [2023-08-30 05:33:08,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=104638, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1620, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=124593, PETRI_PLACES=563, PETRI_TRANSITIONS=3057} [2023-08-30 05:33:08,001 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 535 predicate places. [2023-08-30 05:33:08,001 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 3057 transitions, 124593 flow [2023-08-30 05:33:08,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 105.0) internal successors, (2730), 26 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:33:08,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:33:08,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:33:08,006 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 05:33:08,202 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 05:33:08,202 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 05:33:08,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:33:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1247984198, now seen corresponding path program 22 times [2023-08-30 05:33:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:33:08,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798445574] [2023-08-30 05:33:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:33:08,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:33:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:33:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:33:08,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:33:08,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798445574] [2023-08-30 05:33:08,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798445574] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:33:08,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020533064] [2023-08-30 05:33:08,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:33:08,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:33:08,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:33:08,498 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 05:33:08,500 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 05:33:08,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:33:08,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:33:08,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 05:33:08,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:33:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:33:09,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:33:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:33:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020533064] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:33:46,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:33:46,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2023-08-30 05:33:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604062220] [2023-08-30 05:33:46,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:33:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 05:33:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:33:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 05:33:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=339, Unknown=16, NotChecked=0, Total=420 [2023-08-30 05:33:48,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:33:50,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:33:52,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:33:54,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:33:56,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:33:59,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:34:01,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:34:03,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:34:03,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 258 [2023-08-30 05:34:03,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 3057 transitions, 124593 flow. Second operand has 21 states, 21 states have (on average 97.42857142857143) internal successors, (2046), 21 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:34:03,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:34:03,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 258 [2023-08-30 05:34:03,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:34:12,535 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (* 4294967296 (div c_~k2~0 4294967296)))) (let ((.cse3 (* (div (+ c_~k1~0 1) 4294967296) 4294967296)) (.cse4 (< c_~j1~0 c_~m~0)) (.cse7 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse5 (+ c_~j1~0 1)) (.cse10 (+ .cse9 c_~k1~0)) (.cse12 (* 4294967296 (div c_~k1~0 4294967296)))) (and (<= (+ c_~k2~0 (* c_~j1~0 2)) (+ c_~m~0 (* 4294967296 (div (+ (- 2) c_~k2~0 c_~m~0) 4294967296)) (* (div (+ (- c_~k1~0) 1) 4294967296) 4294967296) c_~k1~0 1)) (or (let ((.cse2 (* c_~m~0 2))) (let ((.cse1 (+ c_~k2~0 .cse2 .cse3)) (.cse0 (* (div (+ c_~k2~0 .cse2) 4294967296) 4294967296))) (and (< (+ .cse0 c_~k1~0) .cse1) (<= .cse1 (+ .cse0 c_~k1~0 1))))) .cse4) (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse5 ~m~0) (let ((.cse6 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse6) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse6 .cse7))))) (or (let ((.cse8 (+ c_~k2~0 .cse3))) (and (<= .cse8 (+ .cse9 c_~k1~0 1)) (< .cse10 .cse8))) .cse4) (forall ((~m~0 Int)) (or (let ((.cse11 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse11 .cse7) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse11) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse5 ~m~0))) (<= (+ c_~k2~0 .cse12) .cse10) (< .cse10 (+ c_~k2~0 .cse12 1))))) is different from false [2023-08-30 05:34:26,190 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse0 (+ c_~j1~0 1))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse0 ~m~0) (let ((.cse1 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse1) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse1 .cse2))))) (exists ((~m~0 Int)) (and (<= ~m~0 1) (< 0 ~m~0) (= (mod (+ c_~k2~0 (* 4294967294 ~m~0)) 4294967296) 0))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse3 .cse2) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse0 ~m~0))) (= (mod (+ 4294967294 c_~k1~0) 4294967296) 0))) is different from false [2023-08-30 05:34:35,131 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse0 (+ c_~j1~0 1)) (.cse5 (+ (* 4294967296 (div c_~k2~0 4294967296)) c_~k1~0)) (.cse4 (* 4294967296 (div c_~k1~0 4294967296)))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse0 ~m~0) (let ((.cse1 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse1) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse1 .cse2))))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse3 .cse2) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse0 ~m~0))) (<= (+ c_~k2~0 .cse4) .cse5) (< .cse5 (+ c_~k2~0 .cse4 1)))) is different from false [2023-08-30 05:34:48,486 INFO L130 PetriNetUnfolder]: 11863/21800 cut-off events. [2023-08-30 05:34:48,486 INFO L131 PetriNetUnfolder]: For 1440023/1440023 co-relation queries the response was YES. [2023-08-30 05:34:48,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305603 conditions, 21800 events. 11863/21800 cut-off events. For 1440023/1440023 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 189194 event pairs, 1014 based on Foata normal form. 9/21809 useless extension candidates. Maximal degree in co-relation 305416. Up to 20858 conditions per place. [2023-08-30 05:34:48,908 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 3165 selfloop transitions, 162 changer transitions 25/3352 dead transitions. [2023-08-30 05:34:48,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 3352 transitions, 141165 flow [2023-08-30 05:34:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 05:34:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 05:34:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2338 transitions. [2023-08-30 05:34:48,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39400067408156386 [2023-08-30 05:34:48,911 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2338 transitions. [2023-08-30 05:34:48,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2338 transitions. [2023-08-30 05:34:48,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:34:48,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2338 transitions. [2023-08-30 05:34:48,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 101.65217391304348) internal successors, (2338), 23 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:34:48,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 258.0) internal successors, (6192), 24 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:34:48,916 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 258.0) internal successors, (6192), 24 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:34:48,916 INFO L175 Difference]: Start difference. First operand has 563 places, 3057 transitions, 124593 flow. Second operand 23 states and 2338 transitions. [2023-08-30 05:34:48,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 3352 transitions, 141165 flow [2023-08-30 05:35:04,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 3352 transitions, 139625 flow, removed 751 selfloop flow, removed 10 redundant places. [2023-08-30 05:35:04,546 INFO L231 Difference]: Finished difference. Result has 589 places, 3185 transitions, 129266 flow [2023-08-30 05:35:04,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=123061, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=129266, PETRI_PLACES=589, PETRI_TRANSITIONS=3185} [2023-08-30 05:35:04,548 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 561 predicate places. [2023-08-30 05:35:04,549 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 3185 transitions, 129266 flow [2023-08-30 05:35:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 97.42857142857143) internal successors, (2046), 21 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:04,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:35:04,549 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:35:04,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-30 05:35:04,749 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 05:35:04,750 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 05:35:04,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:35:04,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1983299304, now seen corresponding path program 23 times [2023-08-30 05:35:04,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:35:04,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395859198] [2023-08-30 05:35:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:35:04,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:35:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:35:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:35:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:35:05,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395859198] [2023-08-30 05:35:05,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395859198] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:35:05,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389292814] [2023-08-30 05:35:05,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:35:05,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:35:05,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:35:05,041 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 05:35:05,043 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 05:35:05,451 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 05:35:05,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:35:05,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 05:35:05,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:35:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:35:05,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:35:08,048 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (< (+ c_~k2~0 .cse3 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))))) is different from false [2023-08-30 05:35:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-08-30 05:35:08,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389292814] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:35:08,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:35:08,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2023-08-30 05:35:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507112310] [2023-08-30 05:35:08,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:35:08,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 05:35:08,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:35:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 05:35:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=318, Unknown=1, NotChecked=36, Total=420 [2023-08-30 05:35:08,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 258 [2023-08-30 05:35:08,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 3185 transitions, 129266 flow. Second operand has 21 states, 21 states have (on average 97.42857142857143) internal successors, (2046), 21 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:08,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:35:08,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 258 [2023-08-30 05:35:08,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:35:11,765 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ (* 4294967296 (div (+ (- 1) c_~k2~0 c_~m~0 (- c_~k1~0)) 4294967296)) c_~k1~0)) (.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse6 (* 4294967296 (div c_~k2~0 4294967296))) (.cse5 (+ c_~k2~0 (* 4294967296 (div c_~k1~0 4294967296))))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (<= (+ (* (div (+ c_~k2~0 (* c_~j1~0 2) (- c_~m~0) 4294967293) 4294967296) 4294967296) 1) .cse3) (<= (+ (* (div (+ c_~k2~0 c_~m~0 4294967293) 4294967296) 4294967296) 1) .cse3) (forall ((~m~0 Int)) (or (let ((.cse4 (* 2 ~m~0))) (< (+ c_~k2~0 .cse4 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse4) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (< .cse5 (+ .cse6 c_~k1~0 1)) (<= (+ .cse6 c_~k1~0) .cse5) (or (let ((.cse9 (* c_~m~0 2))) (let ((.cse8 (+ c_~k2~0 .cse9 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse7 (* (div (+ c_~k2~0 .cse9) 4294967296) 4294967296))) (and (<= (+ .cse7 c_~k1~0 1) .cse8) (< .cse8 (+ .cse7 2 c_~k1~0))))) (< c_~j1~0 c_~m~0)))) is different from false [2023-08-30 05:35:13,891 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (<= (+ (* (div (+ c_~k2~0 (* c_~j1~0 2) (- c_~m~0) 4294967293) 4294967296) 4294967296) 1) (+ (* 4294967296 (div (+ (- 1) c_~k2~0 c_~m~0 (- c_~k1~0)) 4294967296)) c_~k1~0)) (< 0 c_~m~0) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (< (+ c_~k2~0 .cse3 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (<= c_~m~0 1) (= (mod (+ (* c_~m~0 4294967295) c_~k2~0) 4294967296) 0) (= (mod (+ 4294967295 c_~k1~0) 4294967296) 0) (or (let ((.cse6 (* c_~m~0 2))) (let ((.cse5 (+ c_~k2~0 .cse6 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse4 (* (div (+ c_~k2~0 .cse6) 4294967296) 4294967296))) (and (<= (+ .cse4 c_~k1~0 1) .cse5) (< .cse5 (+ .cse4 2 c_~k1~0))))) (< c_~j1~0 c_~m~0)))) is different from false [2023-08-30 05:35:19,694 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse5 (* 4294967296 (div c_~k2~0 4294967296))) (.cse4 (+ c_~k2~0 (* 4294967296 (div c_~k1~0 4294967296))))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (< (+ c_~k2~0 .cse3 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (< .cse4 (+ .cse5 c_~k1~0 1)) (<= (+ .cse5 c_~k1~0) .cse4))) is different from false [2023-08-30 05:35:21,726 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse4 (+ c_~k2~0 c_~m~0 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse3 (* (div (+ c_~k2~0 c_~m~0) 4294967296) 4294967296)) (.cse7 (* 4294967296 (div c_~k2~0 4294967296))) (.cse6 (+ c_~k2~0 (* 4294967296 (div c_~k1~0 4294967296))))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (<= (+ .cse3 c_~k1~0 1) .cse4) (forall ((~m~0 Int)) (or (let ((.cse5 (* 2 ~m~0))) (< (+ c_~k2~0 .cse5 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse5) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (< .cse4 (+ .cse3 2 c_~k1~0)) (< .cse6 (+ .cse7 c_~k1~0 1)) (<= (+ .cse7 c_~k1~0) .cse6))) is different from false [2023-08-30 05:35:24,255 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse4 (+ c_~k2~0 c_~m~0 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse3 (* (div (+ c_~k2~0 c_~m~0) 4294967296) 4294967296))) (and (exists ((~m~0 Int)) (and (<= ~m~0 1) (< 0 ~m~0) (= (mod (+ c_~k2~0 (* 4294967294 ~m~0)) 4294967296) 0))) (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (<= (+ .cse3 c_~k1~0 1) .cse4) (forall ((~m~0 Int)) (or (let ((.cse5 (* 2 ~m~0))) (< (+ c_~k2~0 .cse5 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse5) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (< .cse4 (+ .cse3 2 c_~k1~0)) (= (mod (+ 4294967294 c_~k1~0) 4294967296) 0))) is different from false [2023-08-30 05:35:51,415 INFO L130 PetriNetUnfolder]: 13447/24938 cut-off events. [2023-08-30 05:35:51,416 INFO L131 PetriNetUnfolder]: For 1795494/1795494 co-relation queries the response was YES. [2023-08-30 05:35:51,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368455 conditions, 24938 events. 13447/24938 cut-off events. For 1795494/1795494 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 220866 event pairs, 1143 based on Foata normal form. 26/24964 useless extension candidates. Maximal degree in co-relation 368254. Up to 22278 conditions per place. [2023-08-30 05:35:51,954 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 3418 selfloop transitions, 422 changer transitions 41/3881 dead transitions. [2023-08-30 05:35:51,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 3881 transitions, 163890 flow [2023-08-30 05:35:51,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 05:35:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 05:35:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3344 transitions. [2023-08-30 05:35:51,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39276485788113696 [2023-08-30 05:35:51,958 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3344 transitions. [2023-08-30 05:35:51,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3344 transitions. [2023-08-30 05:35:51,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:35:51,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3344 transitions. [2023-08-30 05:35:51,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 101.33333333333333) internal successors, (3344), 33 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:51,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 258.0) internal successors, (8772), 34 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:51,964 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 258.0) internal successors, (8772), 34 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:35:51,964 INFO L175 Difference]: Start difference. First operand has 589 places, 3185 transitions, 129266 flow. Second operand 33 states and 3344 transitions. [2023-08-30 05:35:51,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 3881 transitions, 163890 flow [2023-08-30 05:36:11,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 3881 transitions, 162963 flow, removed 444 selfloop flow, removed 8 redundant places. [2023-08-30 05:36:11,922 INFO L231 Difference]: Finished difference. Result has 630 places, 3563 transitions, 146868 flow [2023-08-30 05:36:11,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=128343, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=146868, PETRI_PLACES=630, PETRI_TRANSITIONS=3563} [2023-08-30 05:36:11,924 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 602 predicate places. [2023-08-30 05:36:11,925 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 3563 transitions, 146868 flow [2023-08-30 05:36:11,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 97.42857142857143) internal successors, (2046), 21 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:36:11,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:36:11,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:36:11,929 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 05:36:12,129 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 05:36:12,129 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 05:36:12,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:36:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1902221742, now seen corresponding path program 24 times [2023-08-30 05:36:12,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:36:12,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220747500] [2023-08-30 05:36:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:36:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:36:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:36:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:36:12,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:36:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220747500] [2023-08-30 05:36:12,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220747500] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:36:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975743358] [2023-08-30 05:36:12,426 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:36:12,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:36:12,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:36:12,427 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 05:36:12,428 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 05:36:12,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 05:36:12,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:36:12,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 05:36:12,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:36:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:36:13,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:36:15,654 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse0 (+ c_~j1~0 1))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse0 ~m~0) (let ((.cse1 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse1) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse1 .cse2))))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse3 .cse2) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse0 ~m~0))))) is different from false [2023-08-30 05:36:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-08-30 05:36:15,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975743358] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:36:15,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:36:15,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2023-08-30 05:36:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449669333] [2023-08-30 05:36:15,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:36:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 05:36:15,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:36:15,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 05:36:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=319, Unknown=1, NotChecked=36, Total=420 [2023-08-30 05:36:15,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 258 [2023-08-30 05:36:15,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 3563 transitions, 146868 flow. Second operand has 21 states, 21 states have (on average 97.38095238095238) internal successors, (2045), 21 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 05:36:15,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:36:15,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 258 [2023-08-30 05:36:15,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:36:18,897 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse3 (+ c_~j1~0 1))) (and (<= c_~j1~0 1) (or (let ((.cse2 (* c_~m~0 2))) (let ((.cse1 (+ c_~k2~0 .cse2 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse0 (* (div (+ c_~k2~0 .cse2) 4294967296) 4294967296))) (and (< (+ .cse0 c_~k1~0) .cse1) (<= .cse1 (+ .cse0 c_~k1~0 1))))) (< c_~j1~0 c_~m~0)) (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse3 ~m~0) (let ((.cse4 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse4) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse4 .cse5))))) (forall ((~m~0 Int)) (or (let ((.cse6 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse6 .cse5) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse6) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse3 ~m~0))) (< 0 c_~m~0) (<= c_~m~0 1) (= (mod (+ (* c_~m~0 4294967295) c_~k2~0) 4294967296) 0) (= (mod (+ 4294967295 c_~k1~0) 4294967296) 0))) is different from false [2023-08-30 05:36:24,227 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse0 (+ c_~j1~0 1))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse0 ~m~0) (let ((.cse1 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse1) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse1 .cse2))))) (exists ((~m~0 Int)) (and (<= ~m~0 1) (< 0 ~m~0) (= (mod (+ c_~k2~0 (* 4294967294 ~m~0)) 4294967296) 0))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse3 .cse2) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse0 ~m~0))) (= (mod (+ 4294967294 c_~k1~0) 4294967296) 0))) is different from false [2023-08-30 05:37:35,573 WARN L222 SmtUtils]: Spent 16.17s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:37:41,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:37:43,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:37:45,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:37:47,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:37:49,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:37:51,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] Killed by 15