./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:11:04,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:11:04,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:11:04,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:11:04,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:11:04,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:11:04,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:11:04,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:11:04,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:11:04,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:11:04,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:11:04,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:11:04,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:11:04,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:11:04,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:11:04,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:11:04,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:11:04,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:11:04,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:11:04,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:11:04,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:11:04,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:11:04,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:11:04,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:11:04,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:11:04,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:11:04,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:11:04,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:11:04,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:11:04,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:11:04,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:11:04,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:11:04,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:11:04,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:11:04,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:11:04,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:11:04,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:11:04,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:11:04,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:11:04,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:11:04,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:11:04,269 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 04:11:04,311 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:11:04,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:11:04,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:11:04,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:11:04,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:11:04,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:11:04,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:11:04,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:11:04,315 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:11:04,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:11:04,316 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:11:04,316 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:11:04,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:11:04,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:11:04,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:11:04,317 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 04:11:04,317 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 04:11:04,317 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 04:11:04,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:11:04,318 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 04:11:04,318 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:11:04,318 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:11:04,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:11:04,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:11:04,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:11:04,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:11:04,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:11:04,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:11:04,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:11:04,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:11:04,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:11:04,320 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:11:04,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:11:04,321 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:11:04,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:11:04,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:11:04,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:11:04,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:11:04,660 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:11:04,660 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:11:04,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-09-01 04:11:05,869 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:11:06,056 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:11:06,059 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-09-01 04:11:06,065 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45a3b9dd2/7b431e1023a24b71bf882bd522c266a6/FLAG5b95cf9c7 [2023-09-01 04:11:06,076 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45a3b9dd2/7b431e1023a24b71bf882bd522c266a6 [2023-09-01 04:11:06,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:11:06,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:11:06,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:11:06,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:11:06,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:11:06,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffd2028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06, skipping insertion in model container [2023-09-01 04:11:06,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:11:06,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:11:06,245 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/test-easy11.wvr.c[2005,2018] [2023-09-01 04:11:06,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:11:06,260 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:11:06,287 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/test-easy11.wvr.c[2005,2018] [2023-09-01 04:11:06,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:11:06,303 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:11:06,303 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:11:06,309 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:11:06,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06 WrapperNode [2023-09-01 04:11:06,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:11:06,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:11:06,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:11:06,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:11:06,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,354 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-09-01 04:11:06,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:11:06,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:11:06,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:11:06,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:11:06,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:11:06,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:11:06,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:11:06,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:11:06,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (1/1) ... [2023-09-01 04:11:06,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:11:06,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:06,438 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) [2023-09-01 04:11:06,464 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 [2023-09-01 04:11:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:11:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 04:11:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 04:11:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 04:11:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 04:11:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:11:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:11:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:11:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 04:11:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 04:11:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:11:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:11:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 04:11:06,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:11:06,482 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:11:06,584 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:11:06,587 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:11:06,786 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:11:06,792 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:11:06,792 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:11:06,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:11:06 BoogieIcfgContainer [2023-09-01 04:11:06,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:11:06,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:11:06,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:11:06,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:11:06,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:11:06" (1/3) ... [2023-09-01 04:11:06,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e775ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:11:06, skipping insertion in model container [2023-09-01 04:11:06,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:11:06" (2/3) ... [2023-09-01 04:11:06,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e775ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:11:06, skipping insertion in model container [2023-09-01 04:11:06,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:11:06" (3/3) ... [2023-09-01 04:11:06,801 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-09-01 04:11:06,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:11:06,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 04:11:06,815 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:11:06,901 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 04:11:06,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 93 transitions, 202 flow [2023-09-01 04:11:07,006 INFO L130 PetriNetUnfolder]: 6/91 cut-off events. [2023-09-01 04:11:07,007 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:11:07,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 6/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-09-01 04:11:07,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 93 transitions, 202 flow [2023-09-01 04:11:07,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 87 transitions, 186 flow [2023-09-01 04:11:07,021 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:11:07,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 87 transitions, 186 flow [2023-09-01 04:11:07,036 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 87 transitions, 186 flow [2023-09-01 04:11:07,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 186 flow [2023-09-01 04:11:07,083 INFO L130 PetriNetUnfolder]: 6/87 cut-off events. [2023-09-01 04:11:07,084 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:11:07,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 6/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-09-01 04:11:07,086 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2023-09-01 04:11:09,570 INFO L134 LiptonReduction]: Checked pairs total: 815 [2023-09-01 04:11:09,570 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-09-01 04:11:09,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:11:09,587 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;@3c184756, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:11:09,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-09-01 04:11:09,589 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 04:11:09,590 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:11:09,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:09,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 04:11:09,591 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)] === [2023-09-01 04:11:09,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:09,595 INFO L85 PathProgramCache]: Analyzing trace with hash 350, now seen corresponding path program 1 times [2023-09-01 04:11:09,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:09,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447111060] [2023-09-01 04:11:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:09,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:09,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447111060] [2023-09-01 04:11:09,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447111060] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:09,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:09,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 04:11:09,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185014911] [2023-09-01 04:11:09,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:09,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 04:11:09,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:09,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 04:11:09,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 04:11:09,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 177 [2023-09-01 04:11:09,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:09,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:09,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 177 [2023-09-01 04:11:09,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:09,817 INFO L130 PetriNetUnfolder]: 88/151 cut-off events. [2023-09-01 04:11:09,818 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 04:11:09,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 151 events. 88/151 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 374 event pairs, 56 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 252. Up to 152 conditions per place. [2023-09-01 04:11:09,820 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 21 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-09-01 04:11:09,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 96 flow [2023-09-01 04:11:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 04:11:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 04:11:09,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 192 transitions. [2023-09-01 04:11:09,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2023-09-01 04:11:09,831 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 192 transitions. [2023-09-01 04:11:09,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 192 transitions. [2023-09-01 04:11:09,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:09,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 192 transitions. [2023-09-01 04:11:09,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:09,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:09,840 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:09,842 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 192 transitions. [2023-09-01 04:11:09,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 96 flow [2023-09-01 04:11:09,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 04:11:09,845 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-09-01 04:11:09,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-09-01 04:11:09,849 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-09-01 04:11:09,850 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-09-01 04:11:09,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:09,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:09,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:11:09,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:11:09,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 04:11:09,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:09,851 INFO L85 PathProgramCache]: Analyzing trace with hash 345860, now seen corresponding path program 1 times [2023-09-01 04:11:09,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:09,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915961014] [2023-09-01 04:11:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:09,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:09,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915961014] [2023-09-01 04:11:09,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915961014] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:09,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:09,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:11:09,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861770251] [2023-09-01 04:11:09,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:09,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:11:09,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:09,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:11:09,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:11:10,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 177 [2023-09-01 04:11:10,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:10,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 177 [2023-09-01 04:11:10,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:10,055 INFO L130 PetriNetUnfolder]: 82/139 cut-off events. [2023-09-01 04:11:10,056 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:11:10,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 139 events. 82/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 335 event pairs, 52 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 282. Up to 139 conditions per place. [2023-09-01 04:11:10,057 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-09-01 04:11:10,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 80 flow [2023-09-01 04:11:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:11:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:11:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-09-01 04:11:10,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632768361581921 [2023-09-01 04:11:10,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-09-01 04:11:10,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-09-01 04:11:10,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:10,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-09-01 04:11:10,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,071 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 246 transitions. [2023-09-01 04:11:10,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 80 flow [2023-09-01 04:11:10,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 04:11:10,072 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-09-01 04:11:10,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-09-01 04:11:10,073 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-09-01 04:11:10,073 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-09-01 04:11:10,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:10,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:11:10,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:11:10,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 04:11:10,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:10,075 INFO L85 PathProgramCache]: Analyzing trace with hash 345861, now seen corresponding path program 1 times [2023-09-01 04:11:10,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:10,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779277144] [2023-09-01 04:11:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:10,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:10,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:10,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779277144] [2023-09-01 04:11:10,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779277144] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:10,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:10,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:11:10,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056520980] [2023-09-01 04:11:10,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:10,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:11:10,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:10,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:11:10,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:11:10,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 177 [2023-09-01 04:11:10,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:10,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 177 [2023-09-01 04:11:10,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:10,237 INFO L130 PetriNetUnfolder]: 76/127 cut-off events. [2023-09-01 04:11:10,238 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:11:10,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 127 events. 76/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 298 event pairs, 48 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 259. Up to 127 conditions per place. [2023-09-01 04:11:10,239 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-09-01 04:11:10,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-09-01 04:11:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:11:10,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:11:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-09-01 04:11:10,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4821092278719397 [2023-09-01 04:11:10,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-09-01 04:11:10,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-09-01 04:11:10,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:10,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-09-01 04:11:10,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,245 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 256 transitions. [2023-09-01 04:11:10,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-09-01 04:11:10,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:11:10,246 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2023-09-01 04:11:10,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-09-01 04:11:10,247 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-09-01 04:11:10,247 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2023-09-01 04:11:10,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:10,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:11:10,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:11:10,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 04:11:10,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:10,248 INFO L85 PathProgramCache]: Analyzing trace with hash 332378011, now seen corresponding path program 1 times [2023-09-01 04:11:10,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:10,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365587674] [2023-09-01 04:11:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:10,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:10,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:10,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365587674] [2023-09-01 04:11:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365587674] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:10,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:10,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:11:10,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304706395] [2023-09-01 04:11:10,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:11:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:11:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:11:10,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-09-01 04:11:10,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:10,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-09-01 04:11:10,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:10,400 INFO L130 PetriNetUnfolder]: 58/100 cut-off events. [2023-09-01 04:11:10,400 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:11:10,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 100 events. 58/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 212 event pairs, 36 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 206. Up to 100 conditions per place. [2023-09-01 04:11:10,401 INFO L137 encePairwiseOnDemand]: 175/177 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-09-01 04:11:10,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 71 flow [2023-09-01 04:11:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:11:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:11:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-09-01 04:11:10,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331450094161959 [2023-09-01 04:11:10,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-09-01 04:11:10,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-09-01 04:11:10,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:10,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-09-01 04:11:10,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,406 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 230 transitions. [2023-09-01 04:11:10,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 71 flow [2023-09-01 04:11:10,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:11:10,407 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-09-01 04:11:10,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-09-01 04:11:10,408 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-09-01 04:11:10,408 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-09-01 04:11:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:10,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:11:10,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 04:11:10,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 04:11:10,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 332378012, now seen corresponding path program 1 times [2023-09-01 04:11:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:10,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741144055] [2023-09-01 04:11:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:10,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:10,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:10,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741144055] [2023-09-01 04:11:10,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741144055] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:10,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:10,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:11:10,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704948205] [2023-09-01 04:11:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:10,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:11:10,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:11:10,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:11:10,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 177 [2023-09-01 04:11:10,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:10,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 177 [2023-09-01 04:11:10,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:10,508 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-09-01 04:11:10,508 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:11:10,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 73 events. 40/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 24 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 153. Up to 73 conditions per place. [2023-09-01 04:11:10,509 INFO L137 encePairwiseOnDemand]: 175/177 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-09-01 04:11:10,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 68 flow [2023-09-01 04:11:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:11:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:11:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-09-01 04:11:10,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595103578154426 [2023-09-01 04:11:10,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-09-01 04:11:10,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-09-01 04:11:10,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:10,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-09-01 04:11:10,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,516 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 244 transitions. [2023-09-01 04:11:10,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 68 flow [2023-09-01 04:11:10,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:11:10,517 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-09-01 04:11:10,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-09-01 04:11:10,520 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-09-01 04:11:10,520 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-09-01 04:11:10,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:10,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:10,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 04:11:10,524 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)] === [2023-09-01 04:11:10,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash -617721443, now seen corresponding path program 1 times [2023-09-01 04:11:10,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:10,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902921849] [2023-09-01 04:11:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:10,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:10,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:10,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902921849] [2023-09-01 04:11:10,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902921849] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:10,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:10,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624055355] [2023-09-01 04:11:10,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:10,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:11:10,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:10,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:11:10,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:11:10,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-09-01 04:11:10,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:10,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-09-01 04:11:10,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:10,952 INFO L130 PetriNetUnfolder]: 46/88 cut-off events. [2023-09-01 04:11:10,952 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 04:11:10,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 88 events. 46/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 1 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 184. Up to 22 conditions per place. [2023-09-01 04:11:10,953 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 29 selfloop transitions, 8 changer transitions 5/42 dead transitions. [2023-09-01 04:11:10,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 183 flow [2023-09-01 04:11:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:11:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:11:10,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-09-01 04:11:10,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358353510895884 [2023-09-01 04:11:10,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-09-01 04:11:10,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-09-01 04:11:10,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:10,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-09-01 04:11:10,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,962 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,963 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 7 states and 540 transitions. [2023-09-01 04:11:10,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 183 flow [2023-09-01 04:11:10,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:11:10,964 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 88 flow [2023-09-01 04:11:10,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-09-01 04:11:10,965 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-09-01 04:11:10,965 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 88 flow [2023-09-01 04:11:10,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:10,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:10,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:10,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 04:11:10,967 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)] === [2023-09-01 04:11:10,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2123295499, now seen corresponding path program 2 times [2023-09-01 04:11:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:10,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136092590] [2023-09-01 04:11:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:11,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:11,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136092590] [2023-09-01 04:11:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136092590] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:11,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:11,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:11,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938663812] [2023-09-01 04:11:11,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:11,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:11:11,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:11:11,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:11:11,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-09-01 04:11:11,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:11,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-09-01 04:11:11,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:11,381 INFO L130 PetriNetUnfolder]: 56/104 cut-off events. [2023-09-01 04:11:11,381 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-09-01 04:11:11,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 104 events. 56/104 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 232 event pairs, 5 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 312. Up to 57 conditions per place. [2023-09-01 04:11:11,384 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 27 selfloop transitions, 12 changer transitions 5/44 dead transitions. [2023-09-01 04:11:11,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 250 flow [2023-09-01 04:11:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:11:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:11:11,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-09-01 04:11:11,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358353510895884 [2023-09-01 04:11:11,386 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-09-01 04:11:11,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-09-01 04:11:11,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:11,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-09-01 04:11:11,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,392 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,393 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 88 flow. Second operand 7 states and 540 transitions. [2023-09-01 04:11:11,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 250 flow [2023-09-01 04:11:11,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 240 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 04:11:11,396 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 162 flow [2023-09-01 04:11:11,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-09-01 04:11:11,397 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-09-01 04:11:11,397 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 162 flow [2023-09-01 04:11:11,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:11,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:11,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:11:11,398 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)] === [2023-09-01 04:11:11,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1122445221, now seen corresponding path program 3 times [2023-09-01 04:11:11,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:11,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530358601] [2023-09-01 04:11:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:11,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:11,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:11,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530358601] [2023-09-01 04:11:11,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530358601] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:11,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:11,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:11,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25194725] [2023-09-01 04:11:11,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:11,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:11:11,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:11:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:11:11,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-09-01 04:11:11,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:11,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-09-01 04:11:11,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:11,747 INFO L130 PetriNetUnfolder]: 62/114 cut-off events. [2023-09-01 04:11:11,747 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2023-09-01 04:11:11,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 114 events. 62/114 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 273 event pairs, 5 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 417. Up to 66 conditions per place. [2023-09-01 04:11:11,748 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 30 selfloop transitions, 15 changer transitions 5/50 dead transitions. [2023-09-01 04:11:11,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 353 flow [2023-09-01 04:11:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:11:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:11:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-09-01 04:11:11,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358353510895884 [2023-09-01 04:11:11,755 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-09-01 04:11:11,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-09-01 04:11:11,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:11,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-09-01 04:11:11,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,760 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,760 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 162 flow. Second operand 7 states and 540 transitions. [2023-09-01 04:11:11,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 353 flow [2023-09-01 04:11:11,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 321 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-09-01 04:11:11,765 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 228 flow [2023-09-01 04:11:11,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-09-01 04:11:11,767 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-09-01 04:11:11,767 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 228 flow [2023-09-01 04:11:11,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:11,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:11,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:11,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 04:11:11,768 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)] === [2023-09-01 04:11:11,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 203657433, now seen corresponding path program 4 times [2023-09-01 04:11:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:11,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613856018] [2023-09-01 04:11:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:11,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613856018] [2023-09-01 04:11:11,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613856018] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:11,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:11,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:11,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038374010] [2023-09-01 04:11:11,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:11,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:11:11,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:11:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:11:11,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:12,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:12,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:12,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:12,118 INFO L130 PetriNetUnfolder]: 67/123 cut-off events. [2023-09-01 04:11:12,118 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2023-09-01 04:11:12,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 123 events. 67/123 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 312 event pairs, 5 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 492. Up to 71 conditions per place. [2023-09-01 04:11:12,120 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 33 selfloop transitions, 15 changer transitions 5/53 dead transitions. [2023-09-01 04:11:12,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 410 flow [2023-09-01 04:11:12,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:11:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:11:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2023-09-01 04:11:12,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4430992736077482 [2023-09-01 04:11:12,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2023-09-01 04:11:12,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2023-09-01 04:11:12,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:12,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2023-09-01 04:11:12,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,127 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 228 flow. Second operand 7 states and 549 transitions. [2023-09-01 04:11:12,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 410 flow [2023-09-01 04:11:12,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 370 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-09-01 04:11:12,130 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 236 flow [2023-09-01 04:11:12,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-09-01 04:11:12,130 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-09-01 04:11:12,131 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 236 flow [2023-09-01 04:11:12,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:12,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:12,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:11:12,132 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)] === [2023-09-01 04:11:12,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2099222449, now seen corresponding path program 5 times [2023-09-01 04:11:12,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:12,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17162012] [2023-09-01 04:11:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:12,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:12,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:12,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17162012] [2023-09-01 04:11:12,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17162012] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:12,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:12,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:12,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208087261] [2023-09-01 04:11:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:12,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:11:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:11:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:11:12,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-09-01 04:11:12,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:12,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-09-01 04:11:12,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:12,437 INFO L130 PetriNetUnfolder]: 66/124 cut-off events. [2023-09-01 04:11:12,438 INFO L131 PetriNetUnfolder]: For 330/330 co-relation queries the response was YES. [2023-09-01 04:11:12,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 124 events. 66/124 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 309 event pairs, 7 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 510. Up to 76 conditions per place. [2023-09-01 04:11:12,439 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 30 selfloop transitions, 15 changer transitions 5/50 dead transitions. [2023-09-01 04:11:12,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 401 flow [2023-09-01 04:11:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:11:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:11:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2023-09-01 04:11:12,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43422114608555284 [2023-09-01 04:11:12,442 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2023-09-01 04:11:12,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2023-09-01 04:11:12,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:12,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2023-09-01 04:11:12,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,447 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,448 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 236 flow. Second operand 7 states and 538 transitions. [2023-09-01 04:11:12,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 401 flow [2023-09-01 04:11:12,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 361 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-09-01 04:11:12,450 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 242 flow [2023-09-01 04:11:12,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-09-01 04:11:12,452 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2023-09-01 04:11:12,452 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 242 flow [2023-09-01 04:11:12,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:12,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:12,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:11:12,453 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)] === [2023-09-01 04:11:12,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1171992613, now seen corresponding path program 6 times [2023-09-01 04:11:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:12,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578356984] [2023-09-01 04:11:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:12,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:12,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:12,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578356984] [2023-09-01 04:11:12,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578356984] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:12,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:12,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:12,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475866475] [2023-09-01 04:11:12,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:12,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:11:12,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:12,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:11:12,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:11:12,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-09-01 04:11:12,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:12,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-09-01 04:11:12,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:12,794 INFO L130 PetriNetUnfolder]: 67/127 cut-off events. [2023-09-01 04:11:12,795 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2023-09-01 04:11:12,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 127 events. 67/127 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 9 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 516. Up to 59 conditions per place. [2023-09-01 04:11:12,796 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 32 selfloop transitions, 14 changer transitions 5/51 dead transitions. [2023-09-01 04:11:12,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 417 flow [2023-09-01 04:11:12,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:11:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:11:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 534 transitions. [2023-09-01 04:11:12,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43099273607748184 [2023-09-01 04:11:12,798 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 534 transitions. [2023-09-01 04:11:12,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 534 transitions. [2023-09-01 04:11:12,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:12,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 534 transitions. [2023-09-01 04:11:12,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,803 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 242 flow. Second operand 7 states and 534 transitions. [2023-09-01 04:11:12,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 417 flow [2023-09-01 04:11:12,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 379 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-09-01 04:11:12,805 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 248 flow [2023-09-01 04:11:12,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-09-01 04:11:12,806 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-09-01 04:11:12,806 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 248 flow [2023-09-01 04:11:12,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:12,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:12,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:11:12,807 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)] === [2023-09-01 04:11:12,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:12,808 INFO L85 PathProgramCache]: Analyzing trace with hash -451984460, now seen corresponding path program 1 times [2023-09-01 04:11:12,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:12,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874977841] [2023-09-01 04:11:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:12,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:12,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:12,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874977841] [2023-09-01 04:11:12,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874977841] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:12,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:12,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754030152] [2023-09-01 04:11:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:12,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:11:12,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:12,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:12,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:12,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:12,987 INFO L130 PetriNetUnfolder]: 104/195 cut-off events. [2023-09-01 04:11:12,987 INFO L131 PetriNetUnfolder]: For 610/610 co-relation queries the response was YES. [2023-09-01 04:11:12,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 195 events. 104/195 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 625 event pairs, 16 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 809. Up to 78 conditions per place. [2023-09-01 04:11:12,989 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 46 selfloop transitions, 22 changer transitions 4/72 dead transitions. [2023-09-01 04:11:12,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 590 flow [2023-09-01 04:11:12,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:11:12,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:11:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2023-09-01 04:11:12,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44390637610976597 [2023-09-01 04:11:12,991 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2023-09-01 04:11:12,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2023-09-01 04:11:12,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:12,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2023-09-01 04:11:12,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,996 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:12,996 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 248 flow. Second operand 7 states and 550 transitions. [2023-09-01 04:11:12,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 590 flow [2023-09-01 04:11:12,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 522 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-09-01 04:11:13,000 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 366 flow [2023-09-01 04:11:13,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-09-01 04:11:13,001 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2023-09-01 04:11:13,001 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 366 flow [2023-09-01 04:11:13,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:13,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:13,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 04:11:13,002 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)] === [2023-09-01 04:11:13,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2016617798, now seen corresponding path program 2 times [2023-09-01 04:11:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:13,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792708455] [2023-09-01 04:11:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:13,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:13,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:13,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792708455] [2023-09-01 04:11:13,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792708455] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:13,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:13,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:13,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616207804] [2023-09-01 04:11:13,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:13,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:13,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:11:13,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:13,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:13,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:13,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:13,188 INFO L130 PetriNetUnfolder]: 108/211 cut-off events. [2023-09-01 04:11:13,188 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2023-09-01 04:11:13,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 211 events. 108/211 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 711 event pairs, 16 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 975. Up to 80 conditions per place. [2023-09-01 04:11:13,190 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 58 selfloop transitions, 25 changer transitions 1/84 dead transitions. [2023-09-01 04:11:13,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 743 flow [2023-09-01 04:11:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 04:11:13,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 04:11:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 635 transitions. [2023-09-01 04:11:13,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484463276836158 [2023-09-01 04:11:13,193 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 635 transitions. [2023-09-01 04:11:13,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 635 transitions. [2023-09-01 04:11:13,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:13,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 635 transitions. [2023-09-01 04:11:13,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,198 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,198 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 366 flow. Second operand 8 states and 635 transitions. [2023-09-01 04:11:13,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 743 flow [2023-09-01 04:11:13,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 701 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-09-01 04:11:13,204 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 489 flow [2023-09-01 04:11:13,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=489, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-09-01 04:11:13,204 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-09-01 04:11:13,205 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 489 flow [2023-09-01 04:11:13,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:13,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:13,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 04:11:13,206 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)] === [2023-09-01 04:11:13,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:13,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1331678969, now seen corresponding path program 1 times [2023-09-01 04:11:13,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:13,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354967971] [2023-09-01 04:11:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:13,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:13,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:13,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354967971] [2023-09-01 04:11:13,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354967971] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:13,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:13,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344090119] [2023-09-01 04:11:13,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:13,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:11:13,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:13,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 489 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:13,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:13,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:13,375 INFO L130 PetriNetUnfolder]: 123/246 cut-off events. [2023-09-01 04:11:13,375 INFO L131 PetriNetUnfolder]: For 1488/1488 co-relation queries the response was YES. [2023-09-01 04:11:13,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 246 events. 123/246 cut-off events. For 1488/1488 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 910 event pairs, 8 based on Foata normal form. 6/252 useless extension candidates. Maximal degree in co-relation 1229. Up to 77 conditions per place. [2023-09-01 04:11:13,378 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 51 selfloop transitions, 20 changer transitions 2/73 dead transitions. [2023-09-01 04:11:13,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 776 flow [2023-09-01 04:11:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:11:13,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:11:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 473 transitions. [2023-09-01 04:11:13,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453860640301318 [2023-09-01 04:11:13,380 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 473 transitions. [2023-09-01 04:11:13,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 473 transitions. [2023-09-01 04:11:13,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:13,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 473 transitions. [2023-09-01 04:11:13,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,384 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,384 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 489 flow. Second operand 6 states and 473 transitions. [2023-09-01 04:11:13,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 776 flow [2023-09-01 04:11:13,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 727 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-09-01 04:11:13,391 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 547 flow [2023-09-01 04:11:13,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2023-09-01 04:11:13,392 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2023-09-01 04:11:13,392 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 547 flow [2023-09-01 04:11:13,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:13,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:13,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 04:11:13,393 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)] === [2023-09-01 04:11:13,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:13,393 INFO L85 PathProgramCache]: Analyzing trace with hash 413181075, now seen corresponding path program 2 times [2023-09-01 04:11:13,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:13,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706356374] [2023-09-01 04:11:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:13,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:13,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706356374] [2023-09-01 04:11:13,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706356374] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39871369] [2023-09-01 04:11:13,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:11:13,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:13,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:13,441 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) [2023-09-01 04:11:13,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 04:11:13,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:11:13,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:11:13,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:11:13,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:13,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:13,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39871369] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:13,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:11:13,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-09-01 04:11:13,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320270607] [2023-09-01 04:11:13,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:13,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:13,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:11:13,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:13,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:13,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:13,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:13,820 INFO L130 PetriNetUnfolder]: 124/249 cut-off events. [2023-09-01 04:11:13,820 INFO L131 PetriNetUnfolder]: For 1929/1929 co-relation queries the response was YES. [2023-09-01 04:11:13,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 249 events. 124/249 cut-off events. For 1929/1929 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 922 event pairs, 6 based on Foata normal form. 6/255 useless extension candidates. Maximal degree in co-relation 1307. Up to 134 conditions per place. [2023-09-01 04:11:13,823 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 48 selfloop transitions, 23 changer transitions 0/71 dead transitions. [2023-09-01 04:11:13,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 778 flow [2023-09-01 04:11:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:11:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:11:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-09-01 04:11:13,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519774011299435 [2023-09-01 04:11:13,825 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-09-01 04:11:13,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-09-01 04:11:13,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:13,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-09-01 04:11:13,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,829 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,829 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 547 flow. Second operand 5 states and 400 transitions. [2023-09-01 04:11:13,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 778 flow [2023-09-01 04:11:13,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 723 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-09-01 04:11:13,837 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 598 flow [2023-09-01 04:11:13,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-09-01 04:11:13,838 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2023-09-01 04:11:13,838 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 598 flow [2023-09-01 04:11:13,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:13,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:13,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:13,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:14,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 04:11:14,045 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)] === [2023-09-01 04:11:14,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash 964639928, now seen corresponding path program 3 times [2023-09-01 04:11:14,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:14,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240726613] [2023-09-01 04:11:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:14,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:14,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:14,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240726613] [2023-09-01 04:11:14,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240726613] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:14,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:14,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:14,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653863312] [2023-09-01 04:11:14,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:14,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:14,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:14,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:14,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:11:14,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:14,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 598 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:14,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:14,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:14,219 INFO L130 PetriNetUnfolder]: 118/233 cut-off events. [2023-09-01 04:11:14,220 INFO L131 PetriNetUnfolder]: For 2148/2148 co-relation queries the response was YES. [2023-09-01 04:11:14,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 233 events. 118/233 cut-off events. For 2148/2148 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 811 event pairs, 30 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 1308. Up to 154 conditions per place. [2023-09-01 04:11:14,222 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 53 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2023-09-01 04:11:14,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 787 flow [2023-09-01 04:11:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:11:14,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:11:14,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-09-01 04:11:14,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463276836158192 [2023-09-01 04:11:14,224 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-09-01 04:11:14,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-09-01 04:11:14,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:14,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-09-01 04:11:14,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,227 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,227 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 598 flow. Second operand 5 states and 395 transitions. [2023-09-01 04:11:14,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 787 flow [2023-09-01 04:11:14,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 758 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-09-01 04:11:14,235 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 590 flow [2023-09-01 04:11:14,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2023-09-01 04:11:14,236 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-09-01 04:11:14,236 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 590 flow [2023-09-01 04:11:14,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:14,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:14,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 04:11:14,237 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)] === [2023-09-01 04:11:14,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:14,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1290296755, now seen corresponding path program 3 times [2023-09-01 04:11:14,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:14,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548221159] [2023-09-01 04:11:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:14,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:14,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548221159] [2023-09-01 04:11:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548221159] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:14,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:14,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063524320] [2023-09-01 04:11:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:11:14,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:14,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:14,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:14,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:14,394 INFO L130 PetriNetUnfolder]: 146/289 cut-off events. [2023-09-01 04:11:14,395 INFO L131 PetriNetUnfolder]: For 2297/2297 co-relation queries the response was YES. [2023-09-01 04:11:14,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 289 events. 146/289 cut-off events. For 2297/2297 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1117 event pairs, 36 based on Foata normal form. 6/295 useless extension candidates. Maximal degree in co-relation 1622. Up to 212 conditions per place. [2023-09-01 04:11:14,397 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 61 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2023-09-01 04:11:14,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 1000 flow [2023-09-01 04:11:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:11:14,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:11:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-09-01 04:11:14,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45084745762711864 [2023-09-01 04:11:14,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-09-01 04:11:14,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-09-01 04:11:14,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:14,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-09-01 04:11:14,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,403 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,403 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 590 flow. Second operand 5 states and 399 transitions. [2023-09-01 04:11:14,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 1000 flow [2023-09-01 04:11:14,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 970 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:11:14,412 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 774 flow [2023-09-01 04:11:14,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2023-09-01 04:11:14,413 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2023-09-01 04:11:14,413 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 774 flow [2023-09-01 04:11:14,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:14,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:14,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 04:11:14,414 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)] === [2023-09-01 04:11:14,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:14,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1878015302, now seen corresponding path program 4 times [2023-09-01 04:11:14,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:14,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533896740] [2023-09-01 04:11:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:14,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:14,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:14,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533896740] [2023-09-01 04:11:14,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533896740] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:14,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199828551] [2023-09-01 04:11:14,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:11:14,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:14,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:14,451 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) [2023-09-01 04:11:14,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 04:11:14,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:11:14,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:11:14,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:11:14,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:14,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199828551] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:14,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:11:14,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-09-01 04:11:14,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662838974] [2023-09-01 04:11:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:14,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:11:14,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:14,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:14,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:14,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:14,711 INFO L130 PetriNetUnfolder]: 136/269 cut-off events. [2023-09-01 04:11:14,711 INFO L131 PetriNetUnfolder]: For 2224/2224 co-relation queries the response was YES. [2023-09-01 04:11:14,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 269 events. 136/269 cut-off events. For 2224/2224 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1002 event pairs, 8 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 1612. Up to 140 conditions per place. [2023-09-01 04:11:14,714 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 54 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2023-09-01 04:11:14,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 79 transitions, 980 flow [2023-09-01 04:11:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:11:14,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:11:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-09-01 04:11:14,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519774011299435 [2023-09-01 04:11:14,717 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-09-01 04:11:14,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-09-01 04:11:14,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:14,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-09-01 04:11:14,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,720 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 774 flow. Second operand 5 states and 400 transitions. [2023-09-01 04:11:14,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 79 transitions, 980 flow [2023-09-01 04:11:14,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 951 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-09-01 04:11:14,731 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 778 flow [2023-09-01 04:11:14,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=778, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2023-09-01 04:11:14,731 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-09-01 04:11:14,732 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 778 flow [2023-09-01 04:11:14,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:14,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:14,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:14,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:14,938 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,SelfDestructingSolverStorable17 [2023-09-01 04:11:14,938 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)] === [2023-09-01 04:11:14,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:14,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2024669737, now seen corresponding path program 4 times [2023-09-01 04:11:14,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:14,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130426588] [2023-09-01 04:11:14,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:14,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:14,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:14,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130426588] [2023-09-01 04:11:14,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130426588] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:14,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:14,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089692423] [2023-09-01 04:11:14,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:14,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:14,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:14,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:11:15,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:15,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 778 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:15,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:15,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:15,159 INFO L130 PetriNetUnfolder]: 134/267 cut-off events. [2023-09-01 04:11:15,159 INFO L131 PetriNetUnfolder]: For 2291/2291 co-relation queries the response was YES. [2023-09-01 04:11:15,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 267 events. 134/267 cut-off events. For 2291/2291 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1010 event pairs, 20 based on Foata normal form. 2/269 useless extension candidates. Maximal degree in co-relation 1624. Up to 92 conditions per place. [2023-09-01 04:11:15,162 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 58 selfloop transitions, 29 changer transitions 1/88 dead transitions. [2023-09-01 04:11:15,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 1113 flow [2023-09-01 04:11:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 04:11:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 04:11:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 626 transitions. [2023-09-01 04:11:15,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.442090395480226 [2023-09-01 04:11:15,167 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 626 transitions. [2023-09-01 04:11:15,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 626 transitions. [2023-09-01 04:11:15,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:15,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 626 transitions. [2023-09-01 04:11:15,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.25) internal successors, (626), 8 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,173 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,173 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 778 flow. Second operand 8 states and 626 transitions. [2023-09-01 04:11:15,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 1113 flow [2023-09-01 04:11:15,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 1078 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 04:11:15,192 INFO L231 Difference]: Finished difference. Result has 89 places, 65 transitions, 848 flow [2023-09-01 04:11:15,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=848, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2023-09-01 04:11:15,193 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-09-01 04:11:15,193 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 848 flow [2023-09-01 04:11:15,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:15,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:15,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 04:11:15,194 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)] === [2023-09-01 04:11:15,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1299496320, now seen corresponding path program 5 times [2023-09-01 04:11:15,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:15,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496475872] [2023-09-01 04:11:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:15,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:15,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496475872] [2023-09-01 04:11:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496475872] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:15,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:15,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:15,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391274429] [2023-09-01 04:11:15,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:15,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:15,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:11:15,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:15,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 848 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:15,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:15,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:15,386 INFO L130 PetriNetUnfolder]: 119/240 cut-off events. [2023-09-01 04:11:15,387 INFO L131 PetriNetUnfolder]: For 2250/2250 co-relation queries the response was YES. [2023-09-01 04:11:15,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 240 events. 119/240 cut-off events. For 2250/2250 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 863 event pairs, 8 based on Foata normal form. 8/248 useless extension candidates. Maximal degree in co-relation 1504. Up to 106 conditions per place. [2023-09-01 04:11:15,389 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 56 selfloop transitions, 20 changer transitions 2/78 dead transitions. [2023-09-01 04:11:15,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 78 transitions, 1045 flow [2023-09-01 04:11:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:11:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:11:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-09-01 04:11:15,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-09-01 04:11:15,391 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-09-01 04:11:15,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-09-01 04:11:15,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:15,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-09-01 04:11:15,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,394 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,394 INFO L175 Difference]: Start difference. First operand has 89 places, 65 transitions, 848 flow. Second operand 6 states and 472 transitions. [2023-09-01 04:11:15,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 78 transitions, 1045 flow [2023-09-01 04:11:15,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 78 transitions, 992 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-09-01 04:11:15,404 INFO L231 Difference]: Finished difference. Result has 89 places, 60 transitions, 752 flow [2023-09-01 04:11:15,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=89, PETRI_TRANSITIONS=60} [2023-09-01 04:11:15,404 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-09-01 04:11:15,405 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 60 transitions, 752 flow [2023-09-01 04:11:15,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:15,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:15,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 04:11:15,406 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)] === [2023-09-01 04:11:15,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:15,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2098405841, now seen corresponding path program 5 times [2023-09-01 04:11:15,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:15,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465000417] [2023-09-01 04:11:15,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:15,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:15,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:15,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465000417] [2023-09-01 04:11:15,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465000417] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:11:15,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:11:15,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:11:15,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929760435] [2023-09-01 04:11:15,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:11:15,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:11:15,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:11:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:11:15,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-09-01 04:11:15,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 60 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:15,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-09-01 04:11:15,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:15,611 INFO L130 PetriNetUnfolder]: 113/218 cut-off events. [2023-09-01 04:11:15,612 INFO L131 PetriNetUnfolder]: For 2129/2129 co-relation queries the response was YES. [2023-09-01 04:11:15,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 218 events. 113/218 cut-off events. For 2129/2129 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 716 event pairs, 22 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 1378. Up to 92 conditions per place. [2023-09-01 04:11:15,614 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 44 selfloop transitions, 21 changer transitions 4/69 dead transitions. [2023-09-01 04:11:15,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 69 transitions, 925 flow [2023-09-01 04:11:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:11:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:11:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2023-09-01 04:11:15,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350282485875706 [2023-09-01 04:11:15,616 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2023-09-01 04:11:15,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2023-09-01 04:11:15,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:15,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2023-09-01 04:11:15,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,620 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,620 INFO L175 Difference]: Start difference. First operand has 89 places, 60 transitions, 752 flow. Second operand 7 states and 539 transitions. [2023-09-01 04:11:15,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 69 transitions, 925 flow [2023-09-01 04:11:15,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 69 transitions, 867 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-09-01 04:11:15,629 INFO L231 Difference]: Finished difference. Result has 89 places, 57 transitions, 712 flow [2023-09-01 04:11:15,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2023-09-01 04:11:15,629 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-09-01 04:11:15,629 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 712 flow [2023-09-01 04:11:15,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:15,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:15,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:15,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 04:11:15,630 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)] === [2023-09-01 04:11:15,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1342111166, now seen corresponding path program 1 times [2023-09-01 04:11:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:15,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663517042] [2023-09-01 04:11:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:15,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:15,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663517042] [2023-09-01 04:11:15,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663517042] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:15,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764099752] [2023-09-01 04:11:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:15,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:15,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:15,774 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) [2023-09-01 04:11:15,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 04:11:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:15,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 04:11:15,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:15,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:16,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764099752] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:11:16,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:11:16,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:11:16,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243891069] [2023-09-01 04:11:16,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:11:16,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:11:16,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:16,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:11:16,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:11:16,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-09-01 04:11:16,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 712 flow. Second operand has 18 states, 18 states have (on average 70.94444444444444) internal successors, (1277), 18 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:16,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:16,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-09-01 04:11:16,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:16,818 INFO L130 PetriNetUnfolder]: 116/218 cut-off events. [2023-09-01 04:11:16,818 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2023-09-01 04:11:16,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 218 events. 116/218 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 706 event pairs, 2 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 1396. Up to 53 conditions per place. [2023-09-01 04:11:16,820 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 41 selfloop transitions, 21 changer transitions 26/88 dead transitions. [2023-09-01 04:11:16,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 1065 flow [2023-09-01 04:11:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 04:11:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 04:11:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 818 transitions. [2023-09-01 04:11:16,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42013353877760656 [2023-09-01 04:11:16,823 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 818 transitions. [2023-09-01 04:11:16,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 818 transitions. [2023-09-01 04:11:16,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:16,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 818 transitions. [2023-09-01 04:11:16,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.36363636363636) internal successors, (818), 11 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:16,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:16,827 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:16,827 INFO L175 Difference]: Start difference. First operand has 89 places, 57 transitions, 712 flow. Second operand 11 states and 818 transitions. [2023-09-01 04:11:16,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 1065 flow [2023-09-01 04:11:16,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 1013 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-09-01 04:11:16,836 INFO L231 Difference]: Finished difference. Result has 95 places, 46 transitions, 574 flow [2023-09-01 04:11:16,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=574, PETRI_PLACES=95, PETRI_TRANSITIONS=46} [2023-09-01 04:11:16,836 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2023-09-01 04:11:16,837 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 46 transitions, 574 flow [2023-09-01 04:11:16,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.94444444444444) internal successors, (1277), 18 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:16,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:16,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:16,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:17,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:17,044 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)] === [2023-09-01 04:11:17,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:17,044 INFO L85 PathProgramCache]: Analyzing trace with hash 909970288, now seen corresponding path program 2 times [2023-09-01 04:11:17,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:17,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295443255] [2023-09-01 04:11:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:17,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:17,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295443255] [2023-09-01 04:11:17,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295443255] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143921424] [2023-09-01 04:11:17,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:11:17,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:17,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:17,189 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) [2023-09-01 04:11:17,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 04:11:17,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:11:17,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:11:17,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 04:11:17,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:17,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143921424] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:11:17,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:11:17,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:11:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611889096] [2023-09-01 04:11:17,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:11:17,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:11:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:11:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:11:17,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-09-01 04:11:17,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 46 transitions, 574 flow. Second operand has 18 states, 18 states have (on average 70.66666666666667) internal successors, (1272), 18 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) [2023-09-01 04:11:17,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:17,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-09-01 04:11:17,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:18,078 INFO L130 PetriNetUnfolder]: 90/178 cut-off events. [2023-09-01 04:11:18,079 INFO L131 PetriNetUnfolder]: For 1629/1629 co-relation queries the response was YES. [2023-09-01 04:11:18,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 178 events. 90/178 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 540 event pairs, 2 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 1119. Up to 55 conditions per place. [2023-09-01 04:11:18,081 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 45 selfloop transitions, 26 changer transitions 9/80 dead transitions. [2023-09-01 04:11:18,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 80 transitions, 961 flow [2023-09-01 04:11:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 04:11:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 04:11:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 817 transitions. [2023-09-01 04:11:18,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196199280945044 [2023-09-01 04:11:18,084 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 817 transitions. [2023-09-01 04:11:18,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 817 transitions. [2023-09-01 04:11:18,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:18,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 817 transitions. [2023-09-01 04:11:18,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.27272727272727) internal successors, (817), 11 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:18,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:18,088 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:18,088 INFO L175 Difference]: Start difference. First operand has 95 places, 46 transitions, 574 flow. Second operand 11 states and 817 transitions. [2023-09-01 04:11:18,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 80 transitions, 961 flow [2023-09-01 04:11:18,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 838 flow, removed 17 selfloop flow, removed 13 redundant places. [2023-09-01 04:11:18,095 INFO L231 Difference]: Finished difference. Result has 85 places, 49 transitions, 588 flow [2023-09-01 04:11:18,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=85, PETRI_TRANSITIONS=49} [2023-09-01 04:11:18,096 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-09-01 04:11:18,096 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 49 transitions, 588 flow [2023-09-01 04:11:18,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.66666666666667) internal successors, (1272), 18 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) [2023-09-01 04:11:18,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:18,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:18,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:18,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:18,303 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)] === [2023-09-01 04:11:18,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:18,304 INFO L85 PathProgramCache]: Analyzing trace with hash 934043338, now seen corresponding path program 3 times [2023-09-01 04:11:18,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:18,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890947216] [2023-09-01 04:11:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:18,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:18,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:18,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890947216] [2023-09-01 04:11:18,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890947216] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:18,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42457077] [2023-09-01 04:11:18,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:11:18,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:18,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:18,415 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) [2023-09-01 04:11:18,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 04:11:18,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 04:11:18,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:11:18,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 04:11:18,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:18,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:18,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:18,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42457077] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:11:18,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:11:18,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:11:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887961991] [2023-09-01 04:11:18,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:11:18,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:11:18,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:18,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:11:18,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:11:18,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-09-01 04:11:18,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 49 transitions, 588 flow. Second operand has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:18,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:18,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-09-01 04:11:18,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:19,195 INFO L130 PetriNetUnfolder]: 84/173 cut-off events. [2023-09-01 04:11:19,195 INFO L131 PetriNetUnfolder]: For 1193/1193 co-relation queries the response was YES. [2023-09-01 04:11:19,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 173 events. 84/173 cut-off events. For 1193/1193 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 533 event pairs, 2 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 1034. Up to 55 conditions per place. [2023-09-01 04:11:19,197 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 33 selfloop transitions, 15 changer transitions 26/74 dead transitions. [2023-09-01 04:11:19,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 74 transitions, 865 flow [2023-09-01 04:11:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 04:11:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 04:11:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 811 transitions. [2023-09-01 04:11:19,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165382639958911 [2023-09-01 04:11:19,199 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 811 transitions. [2023-09-01 04:11:19,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 811 transitions. [2023-09-01 04:11:19,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:19,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 811 transitions. [2023-09-01 04:11:19,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.72727272727273) internal successors, (811), 11 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:19,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:19,210 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:19,215 INFO L175 Difference]: Start difference. First operand has 85 places, 49 transitions, 588 flow. Second operand 11 states and 811 transitions. [2023-09-01 04:11:19,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 74 transitions, 865 flow [2023-09-01 04:11:19,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 790 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-09-01 04:11:19,222 INFO L231 Difference]: Finished difference. Result has 84 places, 37 transitions, 391 flow [2023-09-01 04:11:19,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=391, PETRI_PLACES=84, PETRI_TRANSITIONS=37} [2023-09-01 04:11:19,222 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2023-09-01 04:11:19,223 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 37 transitions, 391 flow [2023-09-01 04:11:19,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:19,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:19,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:19,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 04:11:19,436 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,SelfDestructingSolverStorable23 [2023-09-01 04:11:19,436 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)] === [2023-09-01 04:11:19,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1793870986, now seen corresponding path program 4 times [2023-09-01 04:11:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:19,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420113562] [2023-09-01 04:11:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:19,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:19,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420113562] [2023-09-01 04:11:19,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420113562] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:19,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143851916] [2023-09-01 04:11:19,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:11:19,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:19,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:19,559 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) [2023-09-01 04:11:19,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 04:11:19,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:11:19,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:11:19,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 04:11:19,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:19,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:19,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143851916] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:11:19,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:11:19,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-09-01 04:11:19,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14330607] [2023-09-01 04:11:19,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:11:19,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:11:19,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:19,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:11:19,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:11:20,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-09-01 04:11:20,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 37 transitions, 391 flow. Second operand has 16 states, 16 states have (on average 70.5) internal successors, (1128), 16 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:20,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:20,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-09-01 04:11:20,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:20,546 INFO L130 PetriNetUnfolder]: 75/169 cut-off events. [2023-09-01 04:11:20,546 INFO L131 PetriNetUnfolder]: For 1013/1013 co-relation queries the response was YES. [2023-09-01 04:11:20,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 169 events. 75/169 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 550 event pairs, 1 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 934. Up to 39 conditions per place. [2023-09-01 04:11:20,548 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 37 selfloop transitions, 27 changer transitions 18/82 dead transitions. [2023-09-01 04:11:20,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 881 flow [2023-09-01 04:11:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 04:11:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 04:11:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1246 transitions. [2023-09-01 04:11:20,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140910601528747 [2023-09-01 04:11:20,550 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1246 transitions. [2023-09-01 04:11:20,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1246 transitions. [2023-09-01 04:11:20,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:20,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1246 transitions. [2023-09-01 04:11:20,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.29411764705883) internal successors, (1246), 17 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:20,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 177.0) internal successors, (3186), 18 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:20,556 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 177.0) internal successors, (3186), 18 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:20,556 INFO L175 Difference]: Start difference. First operand has 84 places, 37 transitions, 391 flow. Second operand 17 states and 1246 transitions. [2023-09-01 04:11:20,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 881 flow [2023-09-01 04:11:20,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 771 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-09-01 04:11:20,563 INFO L231 Difference]: Finished difference. Result has 86 places, 46 transitions, 512 flow [2023-09-01 04:11:20,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=512, PETRI_PLACES=86, PETRI_TRANSITIONS=46} [2023-09-01 04:11:20,564 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2023-09-01 04:11:20,564 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 46 transitions, 512 flow [2023-09-01 04:11:20,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 70.5) internal successors, (1128), 16 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:20,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:20,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:20,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:20,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:20,771 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)] === [2023-09-01 04:11:20,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:20,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1817944036, now seen corresponding path program 5 times [2023-09-01 04:11:20,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:20,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592285135] [2023-09-01 04:11:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:20,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:20,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592285135] [2023-09-01 04:11:20,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592285135] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371307999] [2023-09-01 04:11:20,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:11:20,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:20,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:20,909 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) [2023-09-01 04:11:20,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 04:11:20,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-09-01 04:11:20,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:11:20,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 04:11:20,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:21,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371307999] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:11:21,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:11:21,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-09-01 04:11:21,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347578290] [2023-09-01 04:11:21,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:11:21,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 04:11:21,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 04:11:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-09-01 04:11:21,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-09-01 04:11:21,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 46 transitions, 512 flow. Second operand has 15 states, 15 states have (on average 70.93333333333334) internal successors, (1064), 15 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:21,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:21,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-09-01 04:11:21,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:21,586 INFO L130 PetriNetUnfolder]: 67/145 cut-off events. [2023-09-01 04:11:21,586 INFO L131 PetriNetUnfolder]: For 797/797 co-relation queries the response was YES. [2023-09-01 04:11:21,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 145 events. 67/145 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 448 event pairs, 1 based on Foata normal form. 5/150 useless extension candidates. Maximal degree in co-relation 847. Up to 50 conditions per place. [2023-09-01 04:11:21,588 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 32 selfloop transitions, 20 changer transitions 20/72 dead transitions. [2023-09-01 04:11:21,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 72 transitions, 784 flow [2023-09-01 04:11:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:11:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:11:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1024 transitions. [2023-09-01 04:11:21,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132364810330912 [2023-09-01 04:11:21,591 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1024 transitions. [2023-09-01 04:11:21,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1024 transitions. [2023-09-01 04:11:21,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:21,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1024 transitions. [2023-09-01 04:11:21,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 73.14285714285714) internal successors, (1024), 14 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:21,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:21,596 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:21,597 INFO L175 Difference]: Start difference. First operand has 86 places, 46 transitions, 512 flow. Second operand 14 states and 1024 transitions. [2023-09-01 04:11:21,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 72 transitions, 784 flow [2023-09-01 04:11:21,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 72 transitions, 658 flow, removed 31 selfloop flow, removed 11 redundant places. [2023-09-01 04:11:21,602 INFO L231 Difference]: Finished difference. Result has 86 places, 40 transitions, 371 flow [2023-09-01 04:11:21,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=371, PETRI_PLACES=86, PETRI_TRANSITIONS=40} [2023-09-01 04:11:21,603 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2023-09-01 04:11:21,603 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 40 transitions, 371 flow [2023-09-01 04:11:21,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.93333333333334) internal successors, (1064), 15 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:21,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:21,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:21,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:21,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:21,809 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)] === [2023-09-01 04:11:21,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:21,810 INFO L85 PathProgramCache]: Analyzing trace with hash 783941896, now seen corresponding path program 6 times [2023-09-01 04:11:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:21,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774724958] [2023-09-01 04:11:21,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:21,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:21,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:21,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774724958] [2023-09-01 04:11:21,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774724958] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:21,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985520425] [2023-09-01 04:11:21,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 04:11:21,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:21,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:21,934 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) [2023-09-01 04:11:21,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 04:11:21,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 04:11:21,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:11:21,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 04:11:22,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:22,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:22,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985520425] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:11:22,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:11:22,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-09-01 04:11:22,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150316051] [2023-09-01 04:11:22,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:11:22,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 04:11:22,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:22,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 04:11:22,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-09-01 04:11:22,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-09-01 04:11:22,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 40 transitions, 371 flow. Second operand has 15 states, 15 states have (on average 70.53333333333333) internal successors, (1058), 15 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:22,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:22,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-09-01 04:11:22,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:22,782 INFO L130 PetriNetUnfolder]: 57/125 cut-off events. [2023-09-01 04:11:22,782 INFO L131 PetriNetUnfolder]: For 585/585 co-relation queries the response was YES. [2023-09-01 04:11:22,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 125 events. 57/125 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 344 event pairs, 1 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 681. Up to 29 conditions per place. [2023-09-01 04:11:22,784 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 30 selfloop transitions, 23 changer transitions 11/64 dead transitions. [2023-09-01 04:11:22,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 64 transitions, 631 flow [2023-09-01 04:11:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:11:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:11:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1018 transitions. [2023-09-01 04:11:22,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081517352703795 [2023-09-01 04:11:22,791 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1018 transitions. [2023-09-01 04:11:22,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1018 transitions. [2023-09-01 04:11:22,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:22,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1018 transitions. [2023-09-01 04:11:22,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.71428571428571) internal successors, (1018), 14 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:22,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:22,797 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:22,797 INFO L175 Difference]: Start difference. First operand has 86 places, 40 transitions, 371 flow. Second operand 14 states and 1018 transitions. [2023-09-01 04:11:22,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 64 transitions, 631 flow [2023-09-01 04:11:22,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 562 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-09-01 04:11:22,801 INFO L231 Difference]: Finished difference. Result has 81 places, 40 transitions, 373 flow [2023-09-01 04:11:22,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=373, PETRI_PLACES=81, PETRI_TRANSITIONS=40} [2023-09-01 04:11:22,802 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2023-09-01 04:11:22,802 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 40 transitions, 373 flow [2023-09-01 04:11:22,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.53333333333333) internal successors, (1058), 15 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:22,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:22,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:22,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:23,008 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,SelfDestructingSolverStorable26 [2023-09-01 04:11:23,009 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)] === [2023-09-01 04:11:23,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash -711625490, now seen corresponding path program 7 times [2023-09-01 04:11:23,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:23,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464612799] [2023-09-01 04:11:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:23,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:23,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:23,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464612799] [2023-09-01 04:11:23,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464612799] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:23,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277583883] [2023-09-01 04:11:23,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 04:11:23,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:23,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:23,138 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) [2023-09-01 04:11:23,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 04:11:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:23,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 04:11:23,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:23,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:23,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277583883] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:11:23,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:11:23,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:11:23,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342258767] [2023-09-01 04:11:23,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:11:23,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:11:23,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:11:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:11:23,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-09-01 04:11:23,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 40 transitions, 373 flow. Second operand has 18 states, 18 states have (on average 70.5) internal successors, (1269), 18 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:23,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:23,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-09-01 04:11:23,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:23,925 INFO L130 PetriNetUnfolder]: 59/131 cut-off events. [2023-09-01 04:11:23,925 INFO L131 PetriNetUnfolder]: For 565/565 co-relation queries the response was YES. [2023-09-01 04:11:23,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 131 events. 59/131 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 373 event pairs, 3 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 705. Up to 34 conditions per place. [2023-09-01 04:11:23,926 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 31 selfloop transitions, 15 changer transitions 13/59 dead transitions. [2023-09-01 04:11:23,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 59 transitions, 624 flow [2023-09-01 04:11:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 04:11:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 04:11:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2023-09-01 04:11:23,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41129943502824856 [2023-09-01 04:11:23,928 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 728 transitions. [2023-09-01 04:11:23,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 728 transitions. [2023-09-01 04:11:23,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:23,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 728 transitions. [2023-09-01 04:11:23,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.8) internal successors, (728), 10 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:23,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:23,932 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:23,932 INFO L175 Difference]: Start difference. First operand has 81 places, 40 transitions, 373 flow. Second operand 10 states and 728 transitions. [2023-09-01 04:11:23,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 59 transitions, 624 flow [2023-09-01 04:11:23,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 59 transitions, 562 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-09-01 04:11:23,936 INFO L231 Difference]: Finished difference. Result has 83 places, 39 transitions, 361 flow [2023-09-01 04:11:23,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=83, PETRI_TRANSITIONS=39} [2023-09-01 04:11:23,939 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-09-01 04:11:23,940 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 39 transitions, 361 flow [2023-09-01 04:11:23,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.5) internal successors, (1269), 18 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:23,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:23,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:23,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:24,146 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,SelfDestructingSolverStorable27 [2023-09-01 04:11:24,146 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)] === [2023-09-01 04:11:24,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1222071540, now seen corresponding path program 8 times [2023-09-01 04:11:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:24,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984847183] [2023-09-01 04:11:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:24,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:24,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:24,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984847183] [2023-09-01 04:11:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984847183] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:24,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90652390] [2023-09-01 04:11:24,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:11:24,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:24,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:24,298 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) [2023-09-01 04:11:24,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 04:11:24,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:11:24,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:11:24,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 04:11:24,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:24,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90652390] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:11:24,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:11:24,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:11:24,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341658999] [2023-09-01 04:11:24,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:11:24,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:11:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:11:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:11:24,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-09-01 04:11:24,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 39 transitions, 361 flow. Second operand has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:24,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:24,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-09-01 04:11:24,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:25,088 INFO L130 PetriNetUnfolder]: 50/108 cut-off events. [2023-09-01 04:11:25,088 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-09-01 04:11:25,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 108 events. 50/108 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 270 event pairs, 3 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 578. Up to 32 conditions per place. [2023-09-01 04:11:25,089 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 23 selfloop transitions, 11 changer transitions 19/53 dead transitions. [2023-09-01 04:11:25,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 53 transitions, 533 flow [2023-09-01 04:11:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 04:11:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 04:11:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 796 transitions. [2023-09-01 04:11:25,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40883410374935797 [2023-09-01 04:11:25,091 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 796 transitions. [2023-09-01 04:11:25,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 796 transitions. [2023-09-01 04:11:25,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:25,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 796 transitions. [2023-09-01 04:11:25,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.36363636363636) internal successors, (796), 11 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:25,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:25,095 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:25,095 INFO L175 Difference]: Start difference. First operand has 83 places, 39 transitions, 361 flow. Second operand 11 states and 796 transitions. [2023-09-01 04:11:25,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 53 transitions, 533 flow [2023-09-01 04:11:25,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 53 transitions, 502 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-09-01 04:11:25,098 INFO L231 Difference]: Finished difference. Result has 83 places, 28 transitions, 256 flow [2023-09-01 04:11:25,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=256, PETRI_PLACES=83, PETRI_TRANSITIONS=28} [2023-09-01 04:11:25,100 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-09-01 04:11:25,101 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 28 transitions, 256 flow [2023-09-01 04:11:25,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:25,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:11:25,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:11:25,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:25,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-09-01 04:11:25,307 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)] === [2023-09-01 04:11:25,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:11:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1282005238, now seen corresponding path program 9 times [2023-09-01 04:11:25,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:11:25,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874311419] [2023-09-01 04:11:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:11:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:11:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:11:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:25,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:11:25,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874311419] [2023-09-01 04:11:25,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874311419] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:11:25,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144782188] [2023-09-01 04:11:25,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:11:25,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:25,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:11:25,421 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) [2023-09-01 04:11:25,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 04:11:25,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 04:11:25,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:11:25,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 04:11:25,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:11:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:25,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:11:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:11:25,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144782188] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:11:25,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:11:25,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:11:25,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304806423] [2023-09-01 04:11:25,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:11:25,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:11:25,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:11:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:11:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:11:25,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-09-01 04:11:25,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 28 transitions, 256 flow. Second operand has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:25,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:11:25,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-09-01 04:11:25,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:11:26,125 INFO L130 PetriNetUnfolder]: 32/70 cut-off events. [2023-09-01 04:11:26,125 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2023-09-01 04:11:26,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 70 events. 32/70 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 3 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 375. Up to 23 conditions per place. [2023-09-01 04:11:26,126 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-09-01 04:11:26,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 34 transitions, 344 flow [2023-09-01 04:11:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 04:11:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 04:11:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 648 transitions. [2023-09-01 04:11:26,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067796610169492 [2023-09-01 04:11:26,128 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 648 transitions. [2023-09-01 04:11:26,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 648 transitions. [2023-09-01 04:11:26,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:11:26,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 648 transitions. [2023-09-01 04:11:26,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:26,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:26,131 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:26,131 INFO L175 Difference]: Start difference. First operand has 83 places, 28 transitions, 256 flow. Second operand 9 states and 648 transitions. [2023-09-01 04:11:26,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 34 transitions, 344 flow [2023-09-01 04:11:26,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 34 transitions, 291 flow, removed 3 selfloop flow, removed 14 redundant places. [2023-09-01 04:11:26,134 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2023-09-01 04:11:26,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2023-09-01 04:11:26,134 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2023-09-01 04:11:26,134 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2023-09-01 04:11:26,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:11:26,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-09-01 04:11:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-09-01 04:11:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-09-01 04:11:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-09-01 04:11:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-09-01 04:11:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-09-01 04:11:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-09-01 04:11:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-09-01 04:11:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-09-01 04:11:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-09-01 04:11:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-09-01 04:11:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-09-01 04:11:26,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 04:11:26,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:11:26,345 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 5, 5, 1, 1, 1, 1, 1] [2023-09-01 04:11:26,348 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 04:11:26,348 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 04:11:26,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 04:11:26 BasicIcfg [2023-09-01 04:11:26,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 04:11:26,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 04:11:26,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 04:11:26,351 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 04:11:26,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:11:06" (3/4) ... [2023-09-01 04:11:26,353 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 04:11:26,357 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 04:11:26,357 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 04:11:26,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-09-01 04:11:26,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 04:11:26,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 04:11:26,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 04:11:26,387 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 04:11:26,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 04:11:26,387 INFO L158 Benchmark]: Toolchain (without parser) took 20308.22ms. Allocated memory was 75.5MB in the beginning and 195.0MB in the end (delta: 119.5MB). Free memory was 50.3MB in the beginning and 102.5MB in the end (delta: -52.2MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2023-09-01 04:11:26,388 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 35.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:11:26,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.45ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 39.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 04:11:26,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.68ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 37.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:11:26,388 INFO L158 Benchmark]: Boogie Preprocessor took 41.01ms. Allocated memory is still 75.5MB. Free memory was 37.9MB in the beginning and 36.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:11:26,389 INFO L158 Benchmark]: RCFGBuilder took 397.18ms. Allocated memory is still 75.5MB. Free memory was 36.6MB in the beginning and 43.1MB in the end (delta: -6.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-09-01 04:11:26,389 INFO L158 Benchmark]: TraceAbstraction took 19554.54ms. Allocated memory was 75.5MB in the beginning and 195.0MB in the end (delta: 119.5MB). Free memory was 42.3MB in the beginning and 105.5MB in the end (delta: -63.1MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2023-09-01 04:11:26,389 INFO L158 Benchmark]: Witness Printer took 36.39ms. Allocated memory is still 195.0MB. Free memory was 105.5MB in the beginning and 102.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:11:26,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 35.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.45ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 39.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.68ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 37.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.01ms. Allocated memory is still 75.5MB. Free memory was 37.9MB in the beginning and 36.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 397.18ms. Allocated memory is still 75.5MB. Free memory was 36.6MB in the beginning and 43.1MB in the end (delta: -6.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * TraceAbstraction took 19554.54ms. Allocated memory was 75.5MB in the beginning and 195.0MB in the end (delta: 119.5MB). Free memory was 42.3MB in the beginning and 105.5MB in the end (delta: -63.1MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. * Witness Printer took 36.39ms. Allocated memory is still 195.0MB. Free memory was 105.5MB in the beginning and 102.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 88 PlacesBefore, 29 PlacesAfterwards, 87 TransitionsBefore, 24 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 84 TotalNumberOfCompositions, 815 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 744, independent: 730, independent conditional: 0, independent unconditional: 730, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 385, independent: 383, independent conditional: 0, independent unconditional: 383, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 744, independent: 347, independent conditional: 0, independent unconditional: 347, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 385, unknown conditional: 0, unknown unconditional: 385] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 79]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 110 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.4s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2506 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2061 mSDsluCounter, 1584 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1545 mSDsCounter, 335 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8741 IncrementalHoareTripleChecker+Invalid, 9076 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 335 mSolverCounterUnsat, 39 mSDtfsCounter, 8741 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 569 GetRequests, 239 SyntacticMatches, 29 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=848occurred in iteration=19, InterpolantAutomatonStates: 226, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 533 NumberOfCodeBlocks, 533 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 644 ConstructedInterpolants, 0 QuantifiedInterpolants, 4102 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1457 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 52 InterpolantComputations, 21 PerfectInterpolantSequences, 11/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 04:11:26,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE