./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/test-easy10.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-easy10.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 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --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 04:07:45,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:07:45,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:07:45,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:07:45,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:07:45,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:07:45,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:07:45,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:07:45,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:07:45,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:07:45,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:07:45,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:07:45,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:07:45,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:07:45,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:07:45,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:07:45,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:07:45,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:07:45,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:07:45,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:07:45,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:07:45,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:07:45,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:07:45,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:07:45,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:07:45,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:07:45,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:07:45,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:07:45,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:07:45,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:07:45,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:07:45,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:07:45,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:07:45,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:07:45,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:07:45,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:07:45,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:07:45,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:07:45,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:07:45,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:07:45,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:07:45,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 04:07:45,133 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:07:45,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:07:45,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:07:45,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:07:45,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:07:45,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:07:45,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:07:45,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:07:45,137 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:07:45,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:07:45,138 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:07:45,138 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:07:45,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:07:45,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:07:45,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:07:45,139 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 04:07:45,139 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 04:07:45,139 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 04:07:45,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:07:45,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 04:07:45,140 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:07:45,140 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:07:45,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:07:45,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:07:45,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:07:45,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:07:45,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:07:45,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:07:45,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:07:45,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:07:45,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:07:45,142 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:07:45,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:07:45,143 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:07:45,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:07:45,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:07:45,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:07:45,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:07:45,483 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:07:45,483 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:07:45,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-09-01 04:07:46,744 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:07:46,926 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:07:46,927 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-09-01 04:07:46,932 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8411b1aa7/10c53944559444188b4bbce25d19547a/FLAG66962a43d [2023-09-01 04:07:46,942 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8411b1aa7/10c53944559444188b4bbce25d19547a [2023-09-01 04:07:46,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:07:46,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:07:46,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:07:46,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:07:46,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:07:46,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:07:46" (1/1) ... [2023-09-01 04:07:46,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6216e67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:46, skipping insertion in model container [2023-09-01 04:07:46,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:07:46" (1/1) ... [2023-09-01 04:07:46,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:07:46,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:07:47,111 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-easy10.wvr.c[3907,3920] [2023-09-01 04:07:47,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:07:47,131 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:07:47,173 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-easy10.wvr.c[3907,3920] [2023-09-01 04:07:47,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:07:47,188 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:07:47,188 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:07:47,194 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:07:47,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47 WrapperNode [2023-09-01 04:07:47,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:07:47,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:07:47,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:07:47,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:07:47,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,254 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-09-01 04:07:47,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:07:47,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:07:47,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:07:47,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:07:47,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,295 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:07:47,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:07:47,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:07:47,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:07:47,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (1/1) ... [2023-09-01 04:07:47,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:07:47,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:07:47,342 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 04:07:47,361 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 04:07:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:07:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 04:07:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 04:07:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 04:07:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 04:07:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 04:07:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 04:07:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 04:07:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 04:07:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:07:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:07:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:07:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 04:07:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 04:07:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:07:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:07:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 04:07:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:07:47,378 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 04:07:47,510 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:07:47,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:07:47,820 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:07:47,869 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:07:47,870 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 04:07:47,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:07:47 BoogieIcfgContainer [2023-09-01 04:07:47,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:07:47,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:07:47,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:07:47,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:07:47,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:07:46" (1/3) ... [2023-09-01 04:07:47,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ebb36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:07:47, skipping insertion in model container [2023-09-01 04:07:47,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:07:47" (2/3) ... [2023-09-01 04:07:47,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ebb36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:07:47, skipping insertion in model container [2023-09-01 04:07:47,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:07:47" (3/3) ... [2023-09-01 04:07:47,879 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-09-01 04:07:47,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:07:47,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-09-01 04:07:47,894 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:07:47,971 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 04:07:48,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 155 transitions, 342 flow [2023-09-01 04:07:48,118 INFO L130 PetriNetUnfolder]: 2/151 cut-off events. [2023-09-01 04:07:48,119 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 04:07:48,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 151 events. 2/151 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-09-01 04:07:48,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 155 transitions, 342 flow [2023-09-01 04:07:48,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 147 transitions, 318 flow [2023-09-01 04:07:48,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:07:48,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 147 transitions, 318 flow [2023-09-01 04:07:48,159 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 147 transitions, 318 flow [2023-09-01 04:07:48,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 147 transitions, 318 flow [2023-09-01 04:07:48,218 INFO L130 PetriNetUnfolder]: 2/147 cut-off events. [2023-09-01 04:07:48,219 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 04:07:48,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 147 events. 2/147 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-09-01 04:07:48,223 INFO L119 LiptonReduction]: Number of co-enabled transitions 2336 [2023-09-01 04:07:53,094 INFO L134 LiptonReduction]: Checked pairs total: 14657 [2023-09-01 04:07:53,095 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-09-01 04:07:53,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:07:53,114 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;@23a70997, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:07:53,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-09-01 04:07:53,117 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 04:07:53,117 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:07:53,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:53,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 04:07:53,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:53,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:53,122 INFO L85 PathProgramCache]: Analyzing trace with hash 571, now seen corresponding path program 1 times [2023-09-01 04:07:53,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:53,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986577589] [2023-09-01 04:07:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:53,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:53,195 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 04:07:53,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:53,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986577589] [2023-09-01 04:07:53,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986577589] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:53,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:53,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 04:07:53,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885980222] [2023-09-01 04:07:53,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:53,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 04:07:53,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 04:07:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 04:07:53,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 277 [2023-09-01 04:07:53,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 140 flow. Second operand has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 04:07:53,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:53,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 277 [2023-09-01 04:07:53,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:53,517 INFO L130 PetriNetUnfolder]: 1328/2127 cut-off events. [2023-09-01 04:07:53,518 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-09-01 04:07:53,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 2127 events. 1328/2127 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13522 event pairs, 1328 based on Foata normal form. 0/1544 useless extension candidates. Maximal degree in co-relation 3308. Up to 1968 conditions per place. [2023-09-01 04:07:53,540 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 39 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-09-01 04:07:53,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 212 flow [2023-09-01 04:07:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 04:07:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 04:07:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 322 transitions. [2023-09-01 04:07:53,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5812274368231047 [2023-09-01 04:07:53,560 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 322 transitions. [2023-09-01 04:07:53,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 322 transitions. [2023-09-01 04:07:53,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:53,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 322 transitions. [2023-09-01 04:07:53,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 161.0) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:53,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 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 04:07:53,601 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 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 04:07:53,603 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 140 flow. Second operand 2 states and 322 transitions. [2023-09-01 04:07:53,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 212 flow [2023-09-01 04:07:53,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 196 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 04:07:53,628 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 118 flow [2023-09-01 04:07:53,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-09-01 04:07:53,633 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-09-01 04:07:53,649 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 118 flow [2023-09-01 04:07:53,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 04:07:53,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:53,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:07:53,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:07:53,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:53,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash 561080, now seen corresponding path program 1 times [2023-09-01 04:07:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087912344] [2023-09-01 04:07:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:53,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:54,141 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 04:07:54,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:54,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087912344] [2023-09-01 04:07:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087912344] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:07:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043330541] [2023-09-01 04:07:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:54,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:54,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 277 [2023-09-01 04:07:54,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 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 04:07:54,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:54,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 277 [2023-09-01 04:07:54,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:54,428 INFO L130 PetriNetUnfolder]: 1272/2041 cut-off events. [2023-09-01 04:07:54,428 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:07:54,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 2041 events. 1272/2041 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12895 event pairs, 1272 based on Foata normal form. 0/1490 useless extension candidates. Maximal degree in co-relation 3962. Up to 1881 conditions per place. [2023-09-01 04:07:54,441 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 36 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-09-01 04:07:54,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 188 flow [2023-09-01 04:07:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-09-01 04:07:54,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342960288808665 [2023-09-01 04:07:54,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-09-01 04:07:54,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-09-01 04:07:54,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:54,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-09-01 04:07:54,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:54,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:54,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:54,450 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 118 flow. Second operand 3 states and 444 transitions. [2023-09-01 04:07:54,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 188 flow [2023-09-01 04:07:54,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 04:07:54,451 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 116 flow [2023-09-01 04:07:54,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-09-01 04:07:54,452 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-09-01 04:07:54,452 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 116 flow [2023-09-01 04:07:54,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 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 04:07:54,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:54,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:07:54,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:07:54,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:54,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:54,456 INFO L85 PathProgramCache]: Analyzing trace with hash 561079, now seen corresponding path program 1 times [2023-09-01 04:07:54,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:54,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910477511] [2023-09-01 04:07:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:54,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:54,664 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 04:07:54,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:54,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910477511] [2023-09-01 04:07:54,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910477511] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:54,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:54,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:07:54,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087348840] [2023-09-01 04:07:54,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:54,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:54,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:54,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:54,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 277 [2023-09-01 04:07:54,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:54,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:54,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 277 [2023-09-01 04:07:54,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:54,931 INFO L130 PetriNetUnfolder]: 1216/1955 cut-off events. [2023-09-01 04:07:54,931 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:07:54,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 1955 events. 1216/1955 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12338 event pairs, 1216 based on Foata normal form. 0/1436 useless extension candidates. Maximal degree in co-relation 3791. Up to 1795 conditions per place. [2023-09-01 04:07:54,944 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 34 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-09-01 04:07:54,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 182 flow [2023-09-01 04:07:54,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-09-01 04:07:54,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102286401925391 [2023-09-01 04:07:54,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-09-01 04:07:54,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-09-01 04:07:54,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:54,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-09-01 04:07:54,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 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 04:07:54,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:54,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:54,950 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 116 flow. Second operand 3 states and 424 transitions. [2023-09-01 04:07:54,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 182 flow [2023-09-01 04:07:54,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:07:54,953 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 113 flow [2023-09-01 04:07:54,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-09-01 04:07:54,955 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2023-09-01 04:07:54,957 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 113 flow [2023-09-01 04:07:54,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:54,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:54,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:07:54,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:07:54,959 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:54,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash 539212037, now seen corresponding path program 1 times [2023-09-01 04:07:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455182931] [2023-09-01 04:07:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:55,053 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 04:07:55,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:55,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455182931] [2023-09-01 04:07:55,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455182931] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:55,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:55,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:07:55,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305126602] [2023-09-01 04:07:55,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:55,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:55,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:55,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:55,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:55,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 277 [2023-09-01 04:07:55,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 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 04:07:55,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:55,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 277 [2023-09-01 04:07:55,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:55,384 INFO L130 PetriNetUnfolder]: 1192/1913 cut-off events. [2023-09-01 04:07:55,384 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:07:55,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1913 events. 1192/1913 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12008 event pairs, 1192 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 3708. Up to 1753 conditions per place. [2023-09-01 04:07:55,396 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 32 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-09-01 04:07:55,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 175 flow [2023-09-01 04:07:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-09-01 04:07:55,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529482551143201 [2023-09-01 04:07:55,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-09-01 04:07:55,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-09-01 04:07:55,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:55,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-09-01 04:07:55,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 04:07:55,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:55,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:55,403 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 113 flow. Second operand 3 states and 440 transitions. [2023-09-01 04:07:55,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 175 flow [2023-09-01 04:07:55,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:07:55,405 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 110 flow [2023-09-01 04:07:55,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-09-01 04:07:55,406 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2023-09-01 04:07:55,406 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 110 flow [2023-09-01 04:07:55,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 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 04:07:55,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:55,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:07:55,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 04:07:55,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:55,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash 539212036, now seen corresponding path program 1 times [2023-09-01 04:07:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:55,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459416600] [2023-09-01 04:07:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:55,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:55,487 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 04:07:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:55,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459416600] [2023-09-01 04:07:55,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459416600] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:55,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:55,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:07:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657929824] [2023-09-01 04:07:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:55,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:55,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:55,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 277 [2023-09-01 04:07:55,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 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 04:07:55,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:55,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 277 [2023-09-01 04:07:55,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:55,738 INFO L130 PetriNetUnfolder]: 1168/1871 cut-off events. [2023-09-01 04:07:55,739 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:07:55,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 1871 events. 1168/1871 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11768 event pairs, 1168 based on Foata normal form. 0/1402 useless extension candidates. Maximal degree in co-relation 3625. Up to 1711 conditions per place. [2023-09-01 04:07:55,752 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 30 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-09-01 04:07:55,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 168 flow [2023-09-01 04:07:55,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-09-01 04:07:55,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054151624548736 [2023-09-01 04:07:55,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-09-01 04:07:55,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-09-01 04:07:55,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:55,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-09-01 04:07:55,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 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 04:07:55,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:55,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:55,758 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 110 flow. Second operand 3 states and 420 transitions. [2023-09-01 04:07:55,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 168 flow [2023-09-01 04:07:55,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:07:55,760 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 107 flow [2023-09-01 04:07:55,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-09-01 04:07:55,761 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -13 predicate places. [2023-09-01 04:07:55,761 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 107 flow [2023-09-01 04:07:55,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 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 04:07:55,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:55,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:07:55,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 04:07:55,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:55,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1508263802, now seen corresponding path program 1 times [2023-09-01 04:07:55,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:55,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179314843] [2023-09-01 04:07:55,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:55,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:55,801 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 04:07:55,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179314843] [2023-09-01 04:07:55,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179314843] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:55,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:55,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:07:55,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427068273] [2023-09-01 04:07:55,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:55,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:55,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:55,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 277 [2023-09-01 04:07:55,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 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 04:07:55,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:55,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 277 [2023-09-01 04:07:55,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:56,036 INFO L130 PetriNetUnfolder]: 1112/1785 cut-off events. [2023-09-01 04:07:56,036 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:07:56,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3458 conditions, 1785 events. 1112/1785 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11061 event pairs, 1112 based on Foata normal form. 0/1364 useless extension candidates. Maximal degree in co-relation 3454. Up to 1625 conditions per place. [2023-09-01 04:07:56,050 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 28 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-09-01 04:07:56,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 161 flow [2023-09-01 04:07:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:56,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-09-01 04:07:56,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030084235860409 [2023-09-01 04:07:56,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-09-01 04:07:56,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-09-01 04:07:56,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:56,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-09-01 04:07:56,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 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 04:07:56,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:56,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:56,057 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 107 flow. Second operand 3 states and 418 transitions. [2023-09-01 04:07:56,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 161 flow [2023-09-01 04:07:56,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:07:56,059 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 104 flow [2023-09-01 04:07:56,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-09-01 04:07:56,062 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -14 predicate places. [2023-09-01 04:07:56,062 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 104 flow [2023-09-01 04:07:56,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 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 04:07:56,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:56,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:07:56,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 04:07:56,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:56,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:56,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1508263804, now seen corresponding path program 1 times [2023-09-01 04:07:56,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:56,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075298106] [2023-09-01 04:07:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:56,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:56,143 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 04:07:56,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075298106] [2023-09-01 04:07:56,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075298106] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:56,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:56,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:07:56,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17927389] [2023-09-01 04:07:56,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:56,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:56,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 277 [2023-09-01 04:07:56,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 04:07:56,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:56,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 277 [2023-09-01 04:07:56,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:56,353 INFO L130 PetriNetUnfolder]: 1056/1699 cut-off events. [2023-09-01 04:07:56,353 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:07:56,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 1699 events. 1056/1699 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10453 event pairs, 1056 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 3283. Up to 1539 conditions per place. [2023-09-01 04:07:56,363 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 26 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-09-01 04:07:56,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 43 transitions, 154 flow [2023-09-01 04:07:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-09-01 04:07:56,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222623345367028 [2023-09-01 04:07:56,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-09-01 04:07:56,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-09-01 04:07:56,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:56,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-09-01 04:07:56,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 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 04:07:56,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:56,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:56,370 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 104 flow. Second operand 3 states and 434 transitions. [2023-09-01 04:07:56,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 43 transitions, 154 flow [2023-09-01 04:07:56,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 43 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:07:56,372 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 101 flow [2023-09-01 04:07:56,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2023-09-01 04:07:56,372 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-09-01 04:07:56,373 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 101 flow [2023-09-01 04:07:56,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 04:07:56,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:56,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:07:56,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:07:56,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:56,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2037522704, now seen corresponding path program 1 times [2023-09-01 04:07:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:56,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004756620] [2023-09-01 04:07:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:56,419 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 04:07:56,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:56,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004756620] [2023-09-01 04:07:56,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004756620] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:56,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:56,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:07:56,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103956892] [2023-09-01 04:07:56,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:56,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:56,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:56,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-09-01 04:07:56,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 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 04:07:56,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:56,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-09-01 04:07:56,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:56,620 INFO L130 PetriNetUnfolder]: 840/1402 cut-off events. [2023-09-01 04:07:56,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:07:56,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1402 events. 840/1402 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8549 event pairs, 840 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 2690. Up to 1242 conditions per place. [2023-09-01 04:07:56,630 INFO L137 encePairwiseOnDemand]: 275/277 looper letters, 25 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-09-01 04:07:56,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 42 transitions, 151 flow [2023-09-01 04:07:56,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-09-01 04:07:56,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018050541516246 [2023-09-01 04:07:56,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-09-01 04:07:56,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-09-01 04:07:56,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:56,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-09-01 04:07:56,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 04:07:56,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:56,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:56,636 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 101 flow. Second operand 3 states and 417 transitions. [2023-09-01 04:07:56,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 42 transitions, 151 flow [2023-09-01 04:07:56,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:07:56,638 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 100 flow [2023-09-01 04:07:56,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-09-01 04:07:56,639 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-09-01 04:07:56,639 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 100 flow [2023-09-01 04:07:56,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 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 04:07:56,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:56,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:07:56,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 04:07:56,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:56,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2037522705, now seen corresponding path program 1 times [2023-09-01 04:07:56,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:56,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867091441] [2023-09-01 04:07:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:56,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:56,765 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 04:07:56,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:56,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867091441] [2023-09-01 04:07:56,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867091441] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:56,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:56,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 04:07:56,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844204185] [2023-09-01 04:07:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:56,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:07:56,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:07:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 04:07:56,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 277 [2023-09-01 04:07:56,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 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 04:07:56,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:56,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 277 [2023-09-01 04:07:56,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:57,022 INFO L130 PetriNetUnfolder]: 624/1105 cut-off events. [2023-09-01 04:07:57,023 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:07:57,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1105 events. 624/1105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6650 event pairs, 624 based on Foata normal form. 0/1002 useless extension candidates. Maximal degree in co-relation 2097. Up to 945 conditions per place. [2023-09-01 04:07:57,029 INFO L137 encePairwiseOnDemand]: 275/277 looper letters, 24 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-09-01 04:07:57,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 41 transitions, 148 flow [2023-09-01 04:07:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:57,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-09-01 04:07:57,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4536702767749699 [2023-09-01 04:07:57,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-09-01 04:07:57,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-09-01 04:07:57,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:57,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-09-01 04:07:57,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 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 04:07:57,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:57,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:57,035 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 100 flow. Second operand 3 states and 377 transitions. [2023-09-01 04:07:57,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 41 transitions, 148 flow [2023-09-01 04:07:57,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:07:57,036 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 99 flow [2023-09-01 04:07:57,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2023-09-01 04:07:57,037 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-09-01 04:07:57,037 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 99 flow [2023-09-01 04:07:57,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 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 04:07:57,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:57,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:07:57,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:07:57,039 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:57,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:57,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1771008404, now seen corresponding path program 1 times [2023-09-01 04:07:57,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:57,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81671609] [2023-09-01 04:07:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:57,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:57,360 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 04:07:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81671609] [2023-09-01 04:07:57,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81671609] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:57,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:57,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:07:57,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039376838] [2023-09-01 04:07:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:57,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:57,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-09-01 04:07:57,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 04:07:57,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:57,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-09-01 04:07:57,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:57,487 INFO L130 PetriNetUnfolder]: 665/1143 cut-off events. [2023-09-01 04:07:57,487 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 04:07:57,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 1143 events. 665/1143 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6172 event pairs, 492 based on Foata normal form. 25/1154 useless extension candidates. Maximal degree in co-relation 2201. Up to 960 conditions per place. [2023-09-01 04:07:57,496 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-09-01 04:07:57,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 189 flow [2023-09-01 04:07:57,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:57,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-09-01 04:07:57,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415162454873647 [2023-09-01 04:07:57,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-09-01 04:07:57,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-09-01 04:07:57,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:57,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-09-01 04:07:57,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:57,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:57,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:57,504 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 99 flow. Second operand 3 states and 450 transitions. [2023-09-01 04:07:57,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 189 flow [2023-09-01 04:07:57,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:07:57,506 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 106 flow [2023-09-01 04:07:57,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-09-01 04:07:57,507 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -13 predicate places. [2023-09-01 04:07:57,507 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 106 flow [2023-09-01 04:07:57,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 04:07:57,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:57,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:07:57,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:07:57,508 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:57,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:57,509 INFO L85 PathProgramCache]: Analyzing trace with hash -603300392, now seen corresponding path program 2 times [2023-09-01 04:07:57,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:57,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719066765] [2023-09-01 04:07:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:57,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:07:57,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:57,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719066765] [2023-09-01 04:07:57,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719066765] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:57,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:57,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:07:57,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760598634] [2023-09-01 04:07:57,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:57,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:57,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:57,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-09-01 04:07:57,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 04:07:57,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:57,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-09-01 04:07:57,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:57,901 INFO L130 PetriNetUnfolder]: 707/1243 cut-off events. [2023-09-01 04:07:57,902 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 04:07:57,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 1243 events. 707/1243 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6895 event pairs, 176 based on Foata normal form. 14/1226 useless extension candidates. Maximal degree in co-relation 2459. Up to 936 conditions per place. [2023-09-01 04:07:57,909 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-09-01 04:07:57,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 207 flow [2023-09-01 04:07:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-09-01 04:07:57,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439229843561973 [2023-09-01 04:07:57,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-09-01 04:07:57,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-09-01 04:07:57,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:57,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-09-01 04:07:57,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 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 04:07:57,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:57,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:57,915 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 106 flow. Second operand 3 states and 452 transitions. [2023-09-01 04:07:57,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 207 flow [2023-09-01 04:07:57,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 203 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:07:57,916 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 110 flow [2023-09-01 04:07:57,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-09-01 04:07:57,917 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2023-09-01 04:07:57,917 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 110 flow [2023-09-01 04:07:57,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 04:07:57,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:57,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:07:57,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:07:57,918 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:57,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash -669590944, now seen corresponding path program 3 times [2023-09-01 04:07:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521000251] [2023-09-01 04:07:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:58,157 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 04:07:58,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:58,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521000251] [2023-09-01 04:07:58,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521000251] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:58,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:58,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:07:58,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109754738] [2023-09-01 04:07:58,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:58,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:58,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:58,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:58,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:58,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-09-01 04:07:58,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 04:07:58,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:58,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-09-01 04:07:58,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:58,276 INFO L130 PetriNetUnfolder]: 667/1137 cut-off events. [2023-09-01 04:07:58,276 INFO L131 PetriNetUnfolder]: For 139/142 co-relation queries the response was YES. [2023-09-01 04:07:58,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1137 events. 667/1137 cut-off events. For 139/142 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6312 event pairs, 160 based on Foata normal form. 25/1125 useless extension candidates. Maximal degree in co-relation 2368. Up to 964 conditions per place. [2023-09-01 04:07:58,283 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-09-01 04:07:58,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 211 flow [2023-09-01 04:07:58,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-09-01 04:07:58,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439229843561973 [2023-09-01 04:07:58,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-09-01 04:07:58,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-09-01 04:07:58,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:58,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-09-01 04:07:58,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 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 04:07:58,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:58,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:58,288 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 110 flow. Second operand 3 states and 452 transitions. [2023-09-01 04:07:58,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 211 flow [2023-09-01 04:07:58,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:07:58,290 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 114 flow [2023-09-01 04:07:58,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2023-09-01 04:07:58,290 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2023-09-01 04:07:58,291 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 114 flow [2023-09-01 04:07:58,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 04:07:58,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:58,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:07:58,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 04:07:58,292 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:58,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1233912070, now seen corresponding path program 4 times [2023-09-01 04:07:58,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:58,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636160056] [2023-09-01 04:07:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:58,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:07:58,510 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 04:07:58,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:07:58,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636160056] [2023-09-01 04:07:58,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636160056] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:07:58,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:07:58,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:07:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699087512] [2023-09-01 04:07:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:07:58,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:07:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:07:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:07:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:07:58,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-09-01 04:07:58,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 04:07:58,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:07:58,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-09-01 04:07:58,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:07:58,626 INFO L130 PetriNetUnfolder]: 581/1041 cut-off events. [2023-09-01 04:07:58,627 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-09-01 04:07:58,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2217 conditions, 1041 events. 581/1041 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5499 event pairs, 176 based on Foata normal form. 30/1027 useless extension candidates. Maximal degree in co-relation 2210. Up to 756 conditions per place. [2023-09-01 04:07:58,633 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-09-01 04:07:58,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 208 flow [2023-09-01 04:07:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:07:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:07:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-09-01 04:07:58,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415162454873647 [2023-09-01 04:07:58,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-09-01 04:07:58,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-09-01 04:07:58,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:07:58,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-09-01 04:07:58,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:58,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:58,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:07:58,639 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 114 flow. Second operand 3 states and 450 transitions. [2023-09-01 04:07:58,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 208 flow [2023-09-01 04:07:58,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 50 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:07:58,640 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 118 flow [2023-09-01 04:07:58,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2023-09-01 04:07:58,641 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-09-01 04:07:58,641 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 118 flow [2023-09-01 04:07:58,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 04:07:58,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:07:58,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:07:58,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 04:07:58,642 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:07:58,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:07:58,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1838582346, now seen corresponding path program 5 times [2023-09-01 04:07:58,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:07:58,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244797832] [2023-09-01 04:07:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:07:58,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:07:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:08:00,746 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 04:08:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:08:00,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244797832] [2023-09-01 04:08:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244797832] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:08:00,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:08:00,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:08:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575479954] [2023-09-01 04:08:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:08:00,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 04:08:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:08:00,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 04:08:00,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-09-01 04:08:01,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-09-01 04:08:01,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 118 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:01,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:08:01,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-09-01 04:08:01,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:08:03,468 INFO L130 PetriNetUnfolder]: 6729/10127 cut-off events. [2023-09-01 04:08:03,468 INFO L131 PetriNetUnfolder]: For 2007/2007 co-relation queries the response was YES. [2023-09-01 04:08:03,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22355 conditions, 10127 events. 6729/10127 cut-off events. For 2007/2007 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 55117 event pairs, 1243 based on Foata normal form. 1/10128 useless extension candidates. Maximal degree in co-relation 22347. Up to 2692 conditions per place. [2023-09-01 04:08:03,523 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 200 selfloop transitions, 13 changer transitions 16/233 dead transitions. [2023-09-01 04:08:03,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 233 transitions, 1048 flow [2023-09-01 04:08:03,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:08:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:08:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1798 transitions. [2023-09-01 04:08:03,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46364105208870554 [2023-09-01 04:08:03,529 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1798 transitions. [2023-09-01 04:08:03,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1798 transitions. [2023-09-01 04:08:03,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:08:03,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1798 transitions. [2023-09-01 04:08:03,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.42857142857142) internal successors, (1798), 14 states have internal predecessors, (1798), 0 states have call successors, (0), 0 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 04:08:03,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:03,541 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:03,542 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 118 flow. Second operand 14 states and 1798 transitions. [2023-09-01 04:08:03,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 233 transitions, 1048 flow [2023-09-01 04:08:03,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 233 transitions, 1044 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:08:03,547 INFO L231 Difference]: Finished difference. Result has 84 places, 53 transitions, 219 flow [2023-09-01 04:08:03,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=219, PETRI_PLACES=84, PETRI_TRANSITIONS=53} [2023-09-01 04:08:03,548 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2023-09-01 04:08:03,548 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 53 transitions, 219 flow [2023-09-01 04:08:03,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:03,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:08:03,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:08:03,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 04:08:03,550 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:08:03,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:08:03,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1433664338, now seen corresponding path program 6 times [2023-09-01 04:08:03,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:08:03,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736774172] [2023-09-01 04:08:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:08:03,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:08:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:08:05,197 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 04:08:05,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:08:05,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736774172] [2023-09-01 04:08:05,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736774172] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:08:05,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:08:05,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:08:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010693502] [2023-09-01 04:08:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:08:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 04:08:05,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:08:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 04:08:05,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-09-01 04:08:05,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-09-01 04:08:05,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 53 transitions, 219 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:05,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:08:05,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-09-01 04:08:05,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:08:09,045 INFO L130 PetriNetUnfolder]: 14627/22410 cut-off events. [2023-09-01 04:08:09,045 INFO L131 PetriNetUnfolder]: For 22881/22881 co-relation queries the response was YES. [2023-09-01 04:08:09,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66886 conditions, 22410 events. 14627/22410 cut-off events. For 22881/22881 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 144815 event pairs, 2615 based on Foata normal form. 1/22411 useless extension candidates. Maximal degree in co-relation 66866. Up to 6868 conditions per place. [2023-09-01 04:08:09,205 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 253 selfloop transitions, 25 changer transitions 9/291 dead transitions. [2023-09-01 04:08:09,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 291 transitions, 1711 flow [2023-09-01 04:08:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:08:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:08:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1804 transitions. [2023-09-01 04:08:09,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46518824136152653 [2023-09-01 04:08:09,212 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1804 transitions. [2023-09-01 04:08:09,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1804 transitions. [2023-09-01 04:08:09,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:08:09,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1804 transitions. [2023-09-01 04:08:09,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.85714285714286) internal successors, (1804), 14 states have internal predecessors, (1804), 0 states have call successors, (0), 0 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 04:08:09,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:09,222 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:09,222 INFO L175 Difference]: Start difference. First operand has 84 places, 53 transitions, 219 flow. Second operand 14 states and 1804 transitions. [2023-09-01 04:08:09,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 291 transitions, 1711 flow [2023-09-01 04:08:09,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 291 transitions, 1667 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-09-01 04:08:09,545 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 454 flow [2023-09-01 04:08:09,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=454, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2023-09-01 04:08:09,545 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2023-09-01 04:08:09,545 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 454 flow [2023-09-01 04:08:09,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:09,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:08:09,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:08:09,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 04:08:09,547 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:08:09,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:08:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash 325330296, now seen corresponding path program 7 times [2023-09-01 04:08:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:08:09,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38763] [2023-09-01 04:08:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:08:09,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:08:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:08:10,977 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 04:08:10,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:08:10,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38763] [2023-09-01 04:08:10,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38763] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:08:10,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:08:10,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:08:10,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550262111] [2023-09-01 04:08:10,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:08:10,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 04:08:10,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:08:10,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 04:08:10,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-09-01 04:08:11,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-09-01 04:08:11,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 454 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:11,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:08:11,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-09-01 04:08:11,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:08:16,625 INFO L130 PetriNetUnfolder]: 24683/38513 cut-off events. [2023-09-01 04:08:16,625 INFO L131 PetriNetUnfolder]: For 94709/94709 co-relation queries the response was YES. [2023-09-01 04:08:16,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139596 conditions, 38513 events. 24683/38513 cut-off events. For 94709/94709 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 280890 event pairs, 4855 based on Foata normal form. 1/38514 useless extension candidates. Maximal degree in co-relation 139566. Up to 13193 conditions per place. [2023-09-01 04:08:17,162 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 289 selfloop transitions, 41 changer transitions 9/343 dead transitions. [2023-09-01 04:08:17,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 343 transitions, 2546 flow [2023-09-01 04:08:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:08:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:08:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1807 transitions. [2023-09-01 04:08:17,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46596183599793706 [2023-09-01 04:08:17,168 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1807 transitions. [2023-09-01 04:08:17,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1807 transitions. [2023-09-01 04:08:17,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:08:17,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1807 transitions. [2023-09-01 04:08:17,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.07142857142858) internal successors, (1807), 14 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 04:08:17,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:17,191 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:17,191 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 454 flow. Second operand 14 states and 1807 transitions. [2023-09-01 04:08:17,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 343 transitions, 2546 flow [2023-09-01 04:08:17,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 343 transitions, 2500 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-09-01 04:08:17,780 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 942 flow [2023-09-01 04:08:17,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=942, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2023-09-01 04:08:17,780 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 55 predicate places. [2023-09-01 04:08:17,781 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 942 flow [2023-09-01 04:08:17,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:17,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:08:17,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:08:17,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 04:08:17,782 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:08:17,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:08:17,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1956000212, now seen corresponding path program 8 times [2023-09-01 04:08:17,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:08:17,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481629371] [2023-09-01 04:08:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:08:17,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:08:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:08:19,164 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 04:08:19,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:08:19,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481629371] [2023-09-01 04:08:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481629371] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:08:19,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:08:19,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:08:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784602809] [2023-09-01 04:08:19,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:08:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 04:08:19,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:08:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 04:08:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-09-01 04:08:19,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-09-01 04:08:19,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 942 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:19,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:08:19,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-09-01 04:08:19,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:08:26,204 INFO L130 PetriNetUnfolder]: 31847/50874 cut-off events. [2023-09-01 04:08:26,204 INFO L131 PetriNetUnfolder]: For 232988/232988 co-relation queries the response was YES. [2023-09-01 04:08:26,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215648 conditions, 50874 events. 31847/50874 cut-off events. For 232988/232988 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 399798 event pairs, 7945 based on Foata normal form. 1/50875 useless extension candidates. Maximal degree in co-relation 215607. Up to 13538 conditions per place. [2023-09-01 04:08:26,790 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 306 selfloop transitions, 68 changer transitions 10/388 dead transitions. [2023-09-01 04:08:26,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 388 transitions, 3560 flow [2023-09-01 04:08:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:08:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:08:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1801 transitions. [2023-09-01 04:08:26,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46441464672511606 [2023-09-01 04:08:26,797 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1801 transitions. [2023-09-01 04:08:26,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1801 transitions. [2023-09-01 04:08:26,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:08:26,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1801 transitions. [2023-09-01 04:08:26,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.64285714285714) internal successors, (1801), 14 states have internal predecessors, (1801), 0 states have call successors, (0), 0 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 04:08:26,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:26,807 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:26,807 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 942 flow. Second operand 14 states and 1801 transitions. [2023-09-01 04:08:26,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 388 transitions, 3560 flow [2023-09-01 04:08:28,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 388 transitions, 3522 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-09-01 04:08:28,258 INFO L231 Difference]: Finished difference. Result has 149 places, 145 transitions, 1694 flow [2023-09-01 04:08:28,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1694, PETRI_PLACES=149, PETRI_TRANSITIONS=145} [2023-09-01 04:08:28,259 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 78 predicate places. [2023-09-01 04:08:28,259 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 145 transitions, 1694 flow [2023-09-01 04:08:28,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:28,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:08:28,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:08:28,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 04:08:28,260 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:08:28,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:08:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash -13354356, now seen corresponding path program 9 times [2023-09-01 04:08:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:08:28,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617536392] [2023-09-01 04:08:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:08:28,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:08:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:08:29,646 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 04:08:29,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:08:29,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617536392] [2023-09-01 04:08:29,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617536392] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:08:29,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:08:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:08:29,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501138779] [2023-09-01 04:08:29,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:08:29,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 04:08:29,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:08:29,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 04:08:29,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-09-01 04:08:29,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-09-01 04:08:29,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 145 transitions, 1694 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:29,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:08:29,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-09-01 04:08:29,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:08:42,286 INFO L130 PetriNetUnfolder]: 52893/87422 cut-off events. [2023-09-01 04:08:42,287 INFO L131 PetriNetUnfolder]: For 728583/728583 co-relation queries the response was YES. [2023-09-01 04:08:43,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434294 conditions, 87422 events. 52893/87422 cut-off events. For 728583/728583 co-relation queries the response was YES. Maximal size of possible extension queue 3338. Compared 785999 event pairs, 13387 based on Foata normal form. 1/87415 useless extension candidates. Maximal degree in co-relation 434241. Up to 25410 conditions per place. [2023-09-01 04:08:43,705 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 460 selfloop transitions, 69 changer transitions 9/542 dead transitions. [2023-09-01 04:08:43,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 542 transitions, 6910 flow [2023-09-01 04:08:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:08:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:08:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1800 transitions. [2023-09-01 04:08:43,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46415678184631254 [2023-09-01 04:08:43,710 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1800 transitions. [2023-09-01 04:08:43,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1800 transitions. [2023-09-01 04:08:43,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:08:43,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1800 transitions. [2023-09-01 04:08:43,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.57142857142858) internal successors, (1800), 14 states have internal predecessors, (1800), 0 states have call successors, (0), 0 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 04:08:43,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:43,720 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:08:43,720 INFO L175 Difference]: Start difference. First operand has 149 places, 145 transitions, 1694 flow. Second operand 14 states and 1800 transitions. [2023-09-01 04:08:43,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 542 transitions, 6910 flow [2023-09-01 04:08:51,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 542 transitions, 6785 flow, removed 56 selfloop flow, removed 2 redundant places. [2023-09-01 04:08:51,883 INFO L231 Difference]: Finished difference. Result has 171 places, 203 transitions, 2861 flow [2023-09-01 04:08:51,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2861, PETRI_PLACES=171, PETRI_TRANSITIONS=203} [2023-09-01 04:08:51,884 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 100 predicate places. [2023-09-01 04:08:51,884 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 203 transitions, 2861 flow [2023-09-01 04:08:51,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:51,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:08:51,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:08:51,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 04:08:51,885 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:08:51,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:08:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1553534764, now seen corresponding path program 10 times [2023-09-01 04:08:51,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:08:51,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284895795] [2023-09-01 04:08:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:08:51,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:08:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:08:53,095 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 04:08:53,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:08:53,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284895795] [2023-09-01 04:08:53,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284895795] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:08:53,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:08:53,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:08:53,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261182276] [2023-09-01 04:08:53,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:08:53,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 04:08:53,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:08:53,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 04:08:53,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-09-01 04:08:53,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-09-01 04:08:53,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 203 transitions, 2861 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:08:53,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:08:53,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-09-01 04:08:53,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:09:11,070 INFO L130 PetriNetUnfolder]: 62075/105030 cut-off events. [2023-09-01 04:09:11,070 INFO L131 PetriNetUnfolder]: For 1167094/1167094 co-relation queries the response was YES. [2023-09-01 04:09:12,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570402 conditions, 105030 events. 62075/105030 cut-off events. For 1167094/1167094 co-relation queries the response was YES. Maximal size of possible extension queue 4199. Compared 998272 event pairs, 19575 based on Foata normal form. 1/105031 useless extension candidates. Maximal degree in co-relation 570338. Up to 42455 conditions per place. [2023-09-01 04:09:12,939 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 431 selfloop transitions, 88 changer transitions 9/532 dead transitions. [2023-09-01 04:09:12,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 532 transitions, 7224 flow [2023-09-01 04:09:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:09:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:09:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1793 transitions. [2023-09-01 04:09:12,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46235172769468796 [2023-09-01 04:09:12,944 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1793 transitions. [2023-09-01 04:09:12,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1793 transitions. [2023-09-01 04:09:12,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:09:12,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1793 transitions. [2023-09-01 04:09:12,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.07142857142858) internal successors, (1793), 14 states have internal predecessors, (1793), 0 states have call successors, (0), 0 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 04:09:12,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:09:12,954 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:09:12,954 INFO L175 Difference]: Start difference. First operand has 171 places, 203 transitions, 2861 flow. Second operand 14 states and 1793 transitions. [2023-09-01 04:09:12,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 532 transitions, 7224 flow [2023-09-01 04:09:26,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 532 transitions, 7029 flow, removed 89 selfloop flow, removed 2 redundant places. [2023-09-01 04:09:26,847 INFO L231 Difference]: Finished difference. Result has 192 places, 257 transitions, 4007 flow [2023-09-01 04:09:26,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4007, PETRI_PLACES=192, PETRI_TRANSITIONS=257} [2023-09-01 04:09:26,848 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 121 predicate places. [2023-09-01 04:09:26,848 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 257 transitions, 4007 flow [2023-09-01 04:09:26,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:09:26,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:09:26,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:09:26,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 04:09:26,849 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:09:26,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:09:26,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1863950844, now seen corresponding path program 11 times [2023-09-01 04:09:26,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:09:26,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799261099] [2023-09-01 04:09:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:09:26,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:09:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:09:28,320 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 04:09:28,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:09:28,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799261099] [2023-09-01 04:09:28,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799261099] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:09:28,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:09:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:09:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459563284] [2023-09-01 04:09:28,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:09:28,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 04:09:28,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:09:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 04:09:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-09-01 04:09:28,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-09-01 04:09:28,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 257 transitions, 4007 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:09:28,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:09:28,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-09-01 04:09:28,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:09:51,111 INFO L130 PetriNetUnfolder]: 71148/124513 cut-off events. [2023-09-01 04:09:51,111 INFO L131 PetriNetUnfolder]: For 1797447/1797447 co-relation queries the response was YES. [2023-09-01 04:09:53,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728579 conditions, 124513 events. 71148/124513 cut-off events. For 1797447/1797447 co-relation queries the response was YES. Maximal size of possible extension queue 5123. Compared 1267981 event pairs, 18333 based on Foata normal form. 1/124514 useless extension candidates. Maximal degree in co-relation 728505. Up to 34150 conditions per place. [2023-09-01 04:09:53,504 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 623 selfloop transitions, 106 changer transitions 11/744 dead transitions. [2023-09-01 04:09:53,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 744 transitions, 11985 flow [2023-09-01 04:09:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:09:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:09:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1803 transitions. [2023-09-01 04:09:53,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46493037648272306 [2023-09-01 04:09:53,507 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1803 transitions. [2023-09-01 04:09:53,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1803 transitions. [2023-09-01 04:09:53,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:09:53,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1803 transitions. [2023-09-01 04:09:53,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.78571428571428) internal successors, (1803), 14 states have internal predecessors, (1803), 0 states have call successors, (0), 0 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 04:09:53,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:09:53,515 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 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 04:09:53,515 INFO L175 Difference]: Start difference. First operand has 192 places, 257 transitions, 4007 flow. Second operand 14 states and 1803 transitions. [2023-09-01 04:09:53,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 744 transitions, 11985 flow [2023-09-01 04:10:29,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 744 transitions, 11550 flow, removed 205 selfloop flow, removed 2 redundant places. [2023-09-01 04:10:29,362 INFO L231 Difference]: Finished difference. Result has 214 places, 330 transitions, 5537 flow [2023-09-01 04:10:29,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5537, PETRI_PLACES=214, PETRI_TRANSITIONS=330} [2023-09-01 04:10:29,363 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 143 predicate places. [2023-09-01 04:10:29,364 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 330 transitions, 5537 flow [2023-09-01 04:10:29,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:10:29,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:10:29,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:10:29,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 04:10:29,365 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 04:10:29,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:10:29,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1273965686, now seen corresponding path program 12 times [2023-09-01 04:10:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:10:29,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316156404] [2023-09-01 04:10:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:10:29,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:10:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:10:30,628 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 04:10:30,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:10:30,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316156404] [2023-09-01 04:10:30,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316156404] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:10:30,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:10:30,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 04:10:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535465921] [2023-09-01 04:10:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:10:30,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 04:10:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:10:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 04:10:30,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-09-01 04:10:30,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-09-01 04:10:30,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 330 transitions, 5537 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 04:10:30,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:10:30,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-09-01 04:10:30,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand