./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.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 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:43:33,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:43:33,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:43:33,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:43:33,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:43:33,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:43:33,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:43:33,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:43:33,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:43:33,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:43:33,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:43:33,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:43:33,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:43:33,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:43:33,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:43:33,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:43:33,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:43:33,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:43:33,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:43:33,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:43:33,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:43:33,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:43:33,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:43:33,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:43:33,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:43:33,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:43:33,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:43:33,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:43:33,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:43:33,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:43:33,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:43:33,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:43:33,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:43:33,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:43:33,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:43:33,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:43:33,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:43:33,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:43:33,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:43:33,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:43:33,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:43:33,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:43:33,210 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:43:33,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:43:33,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:43:33,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:43:33,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:43:33,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:43:33,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:43:33,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:43:33,213 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:43:33,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:43:33,214 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:43:33,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:43:33,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:43:33,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:43:33,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:43:33,215 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:43:33,216 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:43:33,216 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:43:33,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:43:33,216 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:43:33,216 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:43:33,217 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:43:33,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:43:33,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:43:33,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:43:33,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:43:33,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:43:33,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:43:33,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:43:33,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:43:33,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:43:33,219 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:43:33,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:43:33,219 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:43:33,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:43:33,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:43:33,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:43:33,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:43:33,549 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:43:33,550 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:43:33,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2023-08-30 04:43:34,592 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:43:34,799 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:43:34,799 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2023-08-30 04:43:34,806 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1191237da/a3ac6d5f59dd487ebdf26ba32dd96a7d/FLAGadb4687c6 [2023-08-30 04:43:34,830 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1191237da/a3ac6d5f59dd487ebdf26ba32dd96a7d [2023-08-30 04:43:34,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:43:34,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:43:34,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:43:34,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:43:34,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:43:34,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:43:34" (1/1) ... [2023-08-30 04:43:34,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fd4e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:34, skipping insertion in model container [2023-08-30 04:43:34,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:43:34" (1/1) ... [2023-08-30 04:43:34,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:43:34,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:43:35,051 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/bench-exp3x3-opt.wvr.c[2826,2839] [2023-08-30 04:43:35,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:43:35,069 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:43:35,098 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/bench-exp3x3-opt.wvr.c[2826,2839] [2023-08-30 04:43:35,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:43:35,117 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:43:35,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35 WrapperNode [2023-08-30 04:43:35,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:43:35,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:43:35,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:43:35,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:43:35,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,167 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-08-30 04:43:35,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:43:35,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:43:35,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:43:35,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:43:35,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:43:35,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:43:35,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:43:35,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:43:35,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (1/1) ... [2023-08-30 04:43:35,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:43:35,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:43:35,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 04:43:35,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 04:43:35,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:43:35,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:43:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 04:43:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 04:43:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 04:43:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 04:43:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 04:43:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 04:43:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 04:43:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 04:43:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 04:43:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 04:43:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 04:43:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-30 04:43:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-30 04:43:35,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-30 04:43:35,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-30 04:43:35,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:43:35,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:43:35,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:43:35,298 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 04:43:35,392 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:43:35,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:43:35,792 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:43:35,800 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:43:35,800 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 04:43:35,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:43:35 BoogieIcfgContainer [2023-08-30 04:43:35,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:43:35,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:43:35,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:43:35,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:43:35,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:43:34" (1/3) ... [2023-08-30 04:43:35,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aea54ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:43:35, skipping insertion in model container [2023-08-30 04:43:35,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:43:35" (2/3) ... [2023-08-30 04:43:35,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aea54ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:43:35, skipping insertion in model container [2023-08-30 04:43:35,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:43:35" (3/3) ... [2023-08-30 04:43:35,810 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2023-08-30 04:43:35,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:43:35,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 04:43:35,826 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:43:35,967 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-30 04:43:36,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 197 transitions, 442 flow [2023-08-30 04:43:36,107 INFO L130 PetriNetUnfolder]: 14/191 cut-off events. [2023-08-30 04:43:36,108 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 04:43:36,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 191 events. 14/191 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2023-08-30 04:43:36,115 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 197 transitions, 442 flow [2023-08-30 04:43:36,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 187 transitions, 410 flow [2023-08-30 04:43:36,144 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:43:36,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 187 transitions, 410 flow [2023-08-30 04:43:36,160 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 187 transitions, 410 flow [2023-08-30 04:43:36,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 187 transitions, 410 flow [2023-08-30 04:43:36,212 INFO L130 PetriNetUnfolder]: 14/187 cut-off events. [2023-08-30 04:43:36,213 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 04:43:36,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 187 events. 14/187 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2023-08-30 04:43:36,221 INFO L119 LiptonReduction]: Number of co-enabled transitions 3780 [2023-08-30 04:43:43,363 INFO L134 LiptonReduction]: Checked pairs total: 4893 [2023-08-30 04:43:43,363 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-08-30 04:43:43,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:43:43,380 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;@25f68f65, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:43:43,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-30 04:43:43,382 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 04:43:43,382 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:43:43,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:43,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:43:43,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:43,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash 701, now seen corresponding path program 1 times [2023-08-30 04:43:43,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:43,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076748277] [2023-08-30 04:43:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:43,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:43,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:43,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076748277] [2023-08-30 04:43:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076748277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:43,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:43:43,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824541416] [2023-08-30 04:43:43,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:43,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:43:43,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:43,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:43:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:43:43,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 375 [2023-08-30 04:43:43,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:43,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:43,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 375 [2023-08-30 04:43:43,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:44,005 INFO L130 PetriNetUnfolder]: 3537/4292 cut-off events. [2023-08-30 04:43:44,006 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-08-30 04:43:44,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 4292 events. 3537/4292 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11035 event pairs, 1737 based on Foata normal form. 0/2116 useless extension candidates. Maximal degree in co-relation 6140. Up to 4293 conditions per place. [2023-08-30 04:43:44,033 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 59 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-08-30 04:43:44,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 272 flow [2023-08-30 04:43:44,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 04:43:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 04:43:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 414 transitions. [2023-08-30 04:43:44,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552 [2023-08-30 04:43:44,055 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 414 transitions. [2023-08-30 04:43:44,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 414 transitions. [2023-08-30 04:43:44,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:44,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 414 transitions. [2023-08-30 04:43:44,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 207.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:44,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:44,069 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:44,071 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 160 flow. Second operand 2 states and 414 transitions. [2023-08-30 04:43:44,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 272 flow [2023-08-30 04:43:44,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 248 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-30 04:43:44,082 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 130 flow [2023-08-30 04:43:44,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-30 04:43:44,087 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 04:43:44,088 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 130 flow [2023-08-30 04:43:44,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:44,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:44,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:43:44,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 04:43:44,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:44,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:44,101 INFO L85 PathProgramCache]: Analyzing trace with hash 690055, now seen corresponding path program 1 times [2023-08-30 04:43:44,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:44,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961274612] [2023-08-30 04:43:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:44,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:44,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:44,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961274612] [2023-08-30 04:43:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961274612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:44,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:44,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711825626] [2023-08-30 04:43:44,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:44,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:44,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:44,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:43:44,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:44,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:44,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:43:44,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:45,174 INFO L130 PetriNetUnfolder]: 3375/4096 cut-off events. [2023-08-30 04:43:45,174 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:45,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8258 conditions, 4096 events. 3375/4096 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10420 event pairs, 1656 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 8255. Up to 4096 conditions per place. [2023-08-30 04:43:45,197 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-30 04:43:45,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 240 flow [2023-08-30 04:43:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-30 04:43:45,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4871111111111111 [2023-08-30 04:43:45,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-30 04:43:45,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-30 04:43:45,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:45,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-30 04:43:45,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:45,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:45,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:45,206 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 130 flow. Second operand 3 states and 548 transitions. [2023-08-30 04:43:45,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 240 flow [2023-08-30 04:43:45,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:43:45,209 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 128 flow [2023-08-30 04:43:45,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 04:43:45,210 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 04:43:45,210 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 128 flow [2023-08-30 04:43:45,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:45,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:45,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:43:45,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 04:43:45,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:45,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:45,212 INFO L85 PathProgramCache]: Analyzing trace with hash 690056, now seen corresponding path program 1 times [2023-08-30 04:43:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:45,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870472034] [2023-08-30 04:43:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:45,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:45,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:45,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870472034] [2023-08-30 04:43:45,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870472034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:45,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:45,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:45,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596649560] [2023-08-30 04:43:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:45,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:45,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:45,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:45,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:45,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:43:45,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:45,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:45,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:43:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:45,755 INFO L130 PetriNetUnfolder]: 3213/3900 cut-off events. [2023-08-30 04:43:45,755 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:45,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7868 conditions, 3900 events. 3213/3900 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9834 event pairs, 1575 based on Foata normal form. 0/1954 useless extension candidates. Maximal degree in co-relation 7864. Up to 3900 conditions per place. [2023-08-30 04:43:45,776 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 54 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-30 04:43:45,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 234 flow [2023-08-30 04:43:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-08-30 04:43:45,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2023-08-30 04:43:45,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-08-30 04:43:45,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-08-30 04:43:45,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:45,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-08-30 04:43:45,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:45,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:45,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:45,784 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 128 flow. Second operand 3 states and 570 transitions. [2023-08-30 04:43:45,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 234 flow [2023-08-30 04:43:45,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:45,787 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 125 flow [2023-08-30 04:43:45,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-30 04:43:45,788 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -15 predicate places. [2023-08-30 04:43:45,788 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 125 flow [2023-08-30 04:43:45,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:45,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:45,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:43:45,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 04:43:45,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:45,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash 663157501, now seen corresponding path program 1 times [2023-08-30 04:43:45,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:45,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125029320] [2023-08-30 04:43:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:45,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:45,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:45,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125029320] [2023-08-30 04:43:45,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125029320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:45,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:45,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035616433] [2023-08-30 04:43:45,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:45,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:45,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:45,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:46,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:43:46,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:46,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:43:46,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:46,306 INFO L130 PetriNetUnfolder]: 3141/3808 cut-off events. [2023-08-30 04:43:46,307 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:46,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 3808 events. 3141/3808 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9555 event pairs, 1539 based on Foata normal form. 0/1918 useless extension candidates. Maximal degree in co-relation 7681. Up to 3808 conditions per place. [2023-08-30 04:43:46,331 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 04:43:46,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 227 flow [2023-08-30 04:43:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-30 04:43:46,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355555555555557 [2023-08-30 04:43:46,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-30 04:43:46,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-30 04:43:46,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:46,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-30 04:43:46,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,339 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 125 flow. Second operand 3 states and 544 transitions. [2023-08-30 04:43:46,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 227 flow [2023-08-30 04:43:46,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:46,341 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 122 flow [2023-08-30 04:43:46,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=122, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-08-30 04:43:46,342 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2023-08-30 04:43:46,342 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 122 flow [2023-08-30 04:43:46,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:46,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:43:46,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 04:43:46,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:46,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash 663157502, now seen corresponding path program 1 times [2023-08-30 04:43:46,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:46,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117814559] [2023-08-30 04:43:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:46,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:46,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117814559] [2023-08-30 04:43:46,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117814559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:46,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:46,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:46,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479958529] [2023-08-30 04:43:46,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:46,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:46,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:46,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:46,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:46,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:43:46,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:46,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:43:46,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:46,872 INFO L130 PetriNetUnfolder]: 3069/3716 cut-off events. [2023-08-30 04:43:46,872 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:46,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7502 conditions, 3716 events. 3069/3716 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9301 event pairs, 1503 based on Foata normal form. 0/1882 useless extension candidates. Maximal degree in co-relation 7498. Up to 3716 conditions per place. [2023-08-30 04:43:46,891 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 04:43:46,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 220 flow [2023-08-30 04:43:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:46,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-30 04:43:46,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031111111111111 [2023-08-30 04:43:46,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-30 04:43:46,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-30 04:43:46,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:46,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-30 04:43:46,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,899 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 122 flow. Second operand 3 states and 566 transitions. [2023-08-30 04:43:46,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 220 flow [2023-08-30 04:43:46,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:46,901 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 119 flow [2023-08-30 04:43:46,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=119, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-30 04:43:46,902 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2023-08-30 04:43:46,902 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 119 flow [2023-08-30 04:43:46,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:46,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:46,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:46,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 04:43:46,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:46,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:46,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1639213166, now seen corresponding path program 1 times [2023-08-30 04:43:46,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:46,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891309597] [2023-08-30 04:43:46,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:46,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:47,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:47,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891309597] [2023-08-30 04:43:47,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891309597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:47,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:47,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227055590] [2023-08-30 04:43:47,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:47,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:47,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:47,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:47,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:43:47,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:47,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:43:47,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:47,356 INFO L130 PetriNetUnfolder]: 3021/3652 cut-off events. [2023-08-30 04:43:47,356 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:47,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 3652 events. 3021/3652 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9101 event pairs, 1479 based on Foata normal form. 0/1858 useless extension candidates. Maximal degree in co-relation 7371. Up to 3652 conditions per place. [2023-08-30 04:43:47,373 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-30 04:43:47,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 213 flow [2023-08-30 04:43:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-08-30 04:43:47,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013333333333333 [2023-08-30 04:43:47,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-08-30 04:43:47,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-08-30 04:43:47,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:47,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-08-30 04:43:47,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,380 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 119 flow. Second operand 3 states and 564 transitions. [2023-08-30 04:43:47,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 213 flow [2023-08-30 04:43:47,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:47,382 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 116 flow [2023-08-30 04:43:47,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=116, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-30 04:43:47,383 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -18 predicate places. [2023-08-30 04:43:47,383 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 116 flow [2023-08-30 04:43:47,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:47,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:47,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 04:43:47,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:47,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:47,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1639213167, now seen corresponding path program 1 times [2023-08-30 04:43:47,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:47,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676752973] [2023-08-30 04:43:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:47,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:47,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676752973] [2023-08-30 04:43:47,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676752973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:47,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:47,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:47,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235358523] [2023-08-30 04:43:47,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:47,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:47,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:47,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:47,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:43:47,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:47,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:43:47,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:47,840 INFO L130 PetriNetUnfolder]: 2973/3588 cut-off events. [2023-08-30 04:43:47,840 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:47,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 3588 events. 2973/3588 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8925 event pairs, 1455 based on Foata normal form. 0/1834 useless extension candidates. Maximal degree in co-relation 7244. Up to 3588 conditions per place. [2023-08-30 04:43:47,857 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-30 04:43:47,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 206 flow [2023-08-30 04:43:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-30 04:43:47,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782222222222222 [2023-08-30 04:43:47,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-30 04:43:47,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-30 04:43:47,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:47,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-30 04:43:47,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,864 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 116 flow. Second operand 3 states and 538 transitions. [2023-08-30 04:43:47,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 206 flow [2023-08-30 04:43:47,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 47 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:47,865 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 113 flow [2023-08-30 04:43:47,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=113, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-08-30 04:43:47,866 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -19 predicate places. [2023-08-30 04:43:47,866 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 113 flow [2023-08-30 04:43:47,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:47,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:47,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:47,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 04:43:47,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:47,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash -969127518, now seen corresponding path program 1 times [2023-08-30 04:43:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672889531] [2023-08-30 04:43:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:47,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:47,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:47,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672889531] [2023-08-30 04:43:47,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672889531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:47,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:47,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786798872] [2023-08-30 04:43:47,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:47,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:48,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:43:48,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:48,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:43:48,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:48,210 INFO L130 PetriNetUnfolder]: 2901/3496 cut-off events. [2023-08-30 04:43:48,210 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:48,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 3496 events. 2901/3496 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8645 event pairs, 1419 based on Foata normal form. 0/1798 useless extension candidates. Maximal degree in co-relation 7061. Up to 3496 conditions per place. [2023-08-30 04:43:48,226 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 44 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-30 04:43:48,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 199 flow [2023-08-30 04:43:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-30 04:43:48,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47644444444444445 [2023-08-30 04:43:48,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-30 04:43:48,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-30 04:43:48,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:48,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-30 04:43:48,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,232 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 113 flow. Second operand 3 states and 536 transitions. [2023-08-30 04:43:48,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 199 flow [2023-08-30 04:43:48,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:48,234 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 110 flow [2023-08-30 04:43:48,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=110, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-08-30 04:43:48,235 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-08-30 04:43:48,235 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 110 flow [2023-08-30 04:43:48,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:48,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:48,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 04:43:48,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:48,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:48,236 INFO L85 PathProgramCache]: Analyzing trace with hash -969127520, now seen corresponding path program 1 times [2023-08-30 04:43:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887585728] [2023-08-30 04:43:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:48,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887585728] [2023-08-30 04:43:48,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887585728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:48,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:48,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:48,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456415079] [2023-08-30 04:43:48,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:48,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:48,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:48,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:48,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:43:48,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:48,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:43:48,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:48,586 INFO L130 PetriNetUnfolder]: 2829/3404 cut-off events. [2023-08-30 04:43:48,586 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:48,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 3404 events. 2829/3404 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8376 event pairs, 1383 based on Foata normal form. 0/1762 useless extension candidates. Maximal degree in co-relation 6878. Up to 3404 conditions per place. [2023-08-30 04:43:48,597 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 04:43:48,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 192 flow [2023-08-30 04:43:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-08-30 04:43:48,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496 [2023-08-30 04:43:48,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-08-30 04:43:48,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-08-30 04:43:48,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:48,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-08-30 04:43:48,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,603 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 110 flow. Second operand 3 states and 558 transitions. [2023-08-30 04:43:48,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 192 flow [2023-08-30 04:43:48,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:48,606 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 107 flow [2023-08-30 04:43:48,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, 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=107, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-30 04:43:48,607 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-08-30 04:43:48,607 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 107 flow [2023-08-30 04:43:48,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:48,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:48,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 04:43:48,608 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:48,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash 676373026, now seen corresponding path program 1 times [2023-08-30 04:43:48,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:48,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352497761] [2023-08-30 04:43:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:48,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:48,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:48,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352497761] [2023-08-30 04:43:48,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352497761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:48,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:48,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:48,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336432318] [2023-08-30 04:43:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:48,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:48,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:48,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:43:48,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:48,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:43:48,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:48,946 INFO L130 PetriNetUnfolder]: 2667/3208 cut-off events. [2023-08-30 04:43:48,947 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 3208 events. 2667/3208 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7784 event pairs, 1302 based on Foata normal form. 0/1681 useless extension candidates. Maximal degree in co-relation 6487. Up to 3208 conditions per place. [2023-08-30 04:43:48,961 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 04:43:48,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 41 transitions, 185 flow [2023-08-30 04:43:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-08-30 04:43:48,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49422222222222223 [2023-08-30 04:43:48,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-08-30 04:43:48,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-08-30 04:43:48,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:48,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-08-30 04:43:48,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,968 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 107 flow. Second operand 3 states and 556 transitions. [2023-08-30 04:43:48,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 41 transitions, 185 flow [2023-08-30 04:43:48,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:48,969 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 104 flow [2023-08-30 04:43:48,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=104, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-30 04:43:48,970 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -22 predicate places. [2023-08-30 04:43:48,970 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 104 flow [2023-08-30 04:43:48,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:48,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:48,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:48,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 04:43:48,971 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:48,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 676373025, now seen corresponding path program 1 times [2023-08-30 04:43:48,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:48,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869481166] [2023-08-30 04:43:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:48,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:49,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869481166] [2023-08-30 04:43:49,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869481166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:49,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:49,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:49,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203604369] [2023-08-30 04:43:49,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:49,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:49,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:49,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:49,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:49,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:43:49,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:49,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:49,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:43:49,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:49,300 INFO L130 PetriNetUnfolder]: 2505/3012 cut-off events. [2023-08-30 04:43:49,301 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:49,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6100 conditions, 3012 events. 2505/3012 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7198 event pairs, 1221 based on Foata normal form. 0/1600 useless extension candidates. Maximal degree in co-relation 6096. Up to 3012 conditions per place. [2023-08-30 04:43:49,313 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 04:43:49,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 39 transitions, 178 flow [2023-08-30 04:43:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-30 04:43:49,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711111111111111 [2023-08-30 04:43:49,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-30 04:43:49,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-30 04:43:49,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:49,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-30 04:43:49,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:49,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:49,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:49,321 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 104 flow. Second operand 3 states and 530 transitions. [2023-08-30 04:43:49,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 39 transitions, 178 flow [2023-08-30 04:43:49,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:49,322 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 101 flow [2023-08-30 04:43:49,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-30 04:43:49,323 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-08-30 04:43:49,323 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 101 flow [2023-08-30 04:43:49,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:49,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:49,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:49,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 04:43:49,324 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:49,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:49,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1454430057, now seen corresponding path program 1 times [2023-08-30 04:43:49,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:49,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011964503] [2023-08-30 04:43:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:49,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:49,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:49,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011964503] [2023-08-30 04:43:49,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011964503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:49,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:49,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 04:43:49,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686339148] [2023-08-30 04:43:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:49,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 04:43:49,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 04:43:49,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 04:43:49,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 375 [2023-08-30 04:43:49,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 101 flow. Second operand has 8 states, 8 states have (on average 144.625) internal successors, (1157), 8 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:49,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:49,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 375 [2023-08-30 04:43:49,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:50,043 INFO L130 PetriNetUnfolder]: 2121/2564 cut-off events. [2023-08-30 04:43:50,043 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:50,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5205 conditions, 2564 events. 2121/2564 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5943 event pairs, 1029 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 5201. Up to 2564 conditions per place. [2023-08-30 04:43:50,055 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-30 04:43:50,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 38 transitions, 175 flow [2023-08-30 04:43:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-08-30 04:43:50,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416 [2023-08-30 04:43:50,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-08-30 04:43:50,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-08-30 04:43:50,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:50,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-08-30 04:43:50,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,062 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 101 flow. Second operand 3 states and 468 transitions. [2023-08-30 04:43:50,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 38 transitions, 175 flow [2023-08-30 04:43:50,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 38 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:50,064 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 100 flow [2023-08-30 04:43:50,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-08-30 04:43:50,066 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-08-30 04:43:50,066 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 100 flow [2023-08-30 04:43:50,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.625) internal successors, (1157), 8 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:50,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 04:43:50,067 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:50,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1454430058, now seen corresponding path program 1 times [2023-08-30 04:43:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:50,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073585970] [2023-08-30 04:43:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:50,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:50,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073585970] [2023-08-30 04:43:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073585970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:50,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270406136] [2023-08-30 04:43:50,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:50,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:50,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:50,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:50,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:50,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:43:50,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:50,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:43:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:50,369 INFO L130 PetriNetUnfolder]: 1737/2116 cut-off events. [2023-08-30 04:43:50,370 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:43:50,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4310 conditions, 2116 events. 1737/2116 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4762 event pairs, 837 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 4306. Up to 2116 conditions per place. [2023-08-30 04:43:50,379 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 04:43:50,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 37 transitions, 172 flow [2023-08-30 04:43:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-30 04:43:50,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711111111111111 [2023-08-30 04:43:50,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-30 04:43:50,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-30 04:43:50,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:50,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-30 04:43:50,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,387 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 100 flow. Second operand 3 states and 530 transitions. [2023-08-30 04:43:50,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 37 transitions, 172 flow [2023-08-30 04:43:50,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:50,388 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 99 flow [2023-08-30 04:43:50,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-30 04:43:50,389 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-08-30 04:43:50,389 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 99 flow [2023-08-30 04:43:50,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:50,390 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] [2023-08-30 04:43:50,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 04:43:50,390 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:50,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:50,391 INFO L85 PathProgramCache]: Analyzing trace with hash -238555056, now seen corresponding path program 1 times [2023-08-30 04:43:50,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:50,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711221132] [2023-08-30 04:43:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:50,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:50,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711221132] [2023-08-30 04:43:50,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711221132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:50,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:50,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:50,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771654840] [2023-08-30 04:43:50,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:50,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:50,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:50,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:50,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 375 [2023-08-30 04:43:50,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:50,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:50,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 375 [2023-08-30 04:43:50,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:51,062 INFO L130 PetriNetUnfolder]: 3277/3973 cut-off events. [2023-08-30 04:43:51,062 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2023-08-30 04:43:51,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8057 conditions, 3973 events. 3277/3973 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10693 event pairs, 837 based on Foata normal form. 1/2272 useless extension candidates. Maximal degree in co-relation 8053. Up to 2141 conditions per place. [2023-08-30 04:43:51,084 INFO L137 encePairwiseOnDemand]: 371/375 looper letters, 59 selfloop transitions, 3 changer transitions 1/63 dead transitions. [2023-08-30 04:43:51,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 284 flow [2023-08-30 04:43:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-30 04:43:51,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102222222222222 [2023-08-30 04:43:51,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-30 04:43:51,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-30 04:43:51,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:51,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-30 04:43:51,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:51,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:51,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:51,092 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 99 flow. Second operand 3 states and 574 transitions. [2023-08-30 04:43:51,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 284 flow [2023-08-30 04:43:51,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:51,094 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 117 flow [2023-08-30 04:43:51,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2023-08-30 04:43:51,095 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-08-30 04:43:51,095 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 117 flow [2023-08-30 04:43:51,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:51,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:51,096 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] [2023-08-30 04:43:51,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 04:43:51,096 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:51,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:51,097 INFO L85 PathProgramCache]: Analyzing trace with hash 164282286, now seen corresponding path program 1 times [2023-08-30 04:43:51,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:51,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849508158] [2023-08-30 04:43:51,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:51,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849508158] [2023-08-30 04:43:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849508158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:51,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:51,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:43:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065192619] [2023-08-30 04:43:51,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:51,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:43:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:43:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:43:51,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:43:51,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:51,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:51,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:43:51,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:51,783 INFO L130 PetriNetUnfolder]: 3215/3911 cut-off events. [2023-08-30 04:43:51,784 INFO L131 PetriNetUnfolder]: For 420/420 co-relation queries the response was YES. [2023-08-30 04:43:51,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8658 conditions, 3911 events. 3215/3911 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10698 event pairs, 247 based on Foata normal form. 62/2835 useless extension candidates. Maximal degree in co-relation 8653. Up to 1173 conditions per place. [2023-08-30 04:43:51,801 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 96 selfloop transitions, 6 changer transitions 4/106 dead transitions. [2023-08-30 04:43:51,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 485 flow [2023-08-30 04:43:51,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:43:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:43:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 927 transitions. [2023-08-30 04:43:51,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4944 [2023-08-30 04:43:51,805 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 927 transitions. [2023-08-30 04:43:51,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 927 transitions. [2023-08-30 04:43:51,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:51,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 927 transitions. [2023-08-30 04:43:51,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:51,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:51,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:51,811 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 117 flow. Second operand 5 states and 927 transitions. [2023-08-30 04:43:51,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 485 flow [2023-08-30 04:43:51,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 106 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:51,813 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 138 flow [2023-08-30 04:43:51,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-30 04:43:51,814 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2023-08-30 04:43:51,814 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 138 flow [2023-08-30 04:43:51,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:51,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:51,815 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] [2023-08-30 04:43:51,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 04:43:51,815 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:51,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash 612555092, now seen corresponding path program 1 times [2023-08-30 04:43:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:51,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774994591] [2023-08-30 04:43:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:52,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:52,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774994591] [2023-08-30 04:43:52,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774994591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:52,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:52,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:43:52,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675311986] [2023-08-30 04:43:52,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:52,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:43:52,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:52,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:43:52,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:43:52,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 375 [2023-08-30 04:43:52,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:52,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:52,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 375 [2023-08-30 04:43:52,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:52,600 INFO L130 PetriNetUnfolder]: 4217/5166 cut-off events. [2023-08-30 04:43:52,600 INFO L131 PetriNetUnfolder]: For 1586/1586 co-relation queries the response was YES. [2023-08-30 04:43:52,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12642 conditions, 5166 events. 4217/5166 cut-off events. For 1586/1586 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15392 event pairs, 353 based on Foata normal form. 64/3670 useless extension candidates. Maximal degree in co-relation 12636. Up to 4220 conditions per place. [2023-08-30 04:43:52,627 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 76 selfloop transitions, 12 changer transitions 6/94 dead transitions. [2023-08-30 04:43:52,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 463 flow [2023-08-30 04:43:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:43:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:43:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 699 transitions. [2023-08-30 04:43:52,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466 [2023-08-30 04:43:52,629 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 699 transitions. [2023-08-30 04:43:52,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 699 transitions. [2023-08-30 04:43:52,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:52,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 699 transitions. [2023-08-30 04:43:52,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:52,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:52,635 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:52,635 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 138 flow. Second operand 4 states and 699 transitions. [2023-08-30 04:43:52,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 463 flow [2023-08-30 04:43:52,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:52,659 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 220 flow [2023-08-30 04:43:52,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-08-30 04:43:52,660 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -13 predicate places. [2023-08-30 04:43:52,660 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 220 flow [2023-08-30 04:43:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:52,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:52,661 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] [2023-08-30 04:43:52,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 04:43:52,661 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:52,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2132810008, now seen corresponding path program 2 times [2023-08-30 04:43:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:52,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112275209] [2023-08-30 04:43:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:54,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112275209] [2023-08-30 04:43:54,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112275209] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:43:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014593501] [2023-08-30 04:43:54,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:43:54,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:43:54,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:43:54,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:43:54,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 04:43:54,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 04:43:54,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:43:54,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 04:43:54,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:43:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 04:43:54,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:43:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014593501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:54,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 04:43:54,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 04:43:54,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259741449] [2023-08-30 04:43:54,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:54,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:54,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 04:43:55,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:43:55,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:55,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:55,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:43:55,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:55,637 INFO L130 PetriNetUnfolder]: 5757/7023 cut-off events. [2023-08-30 04:43:55,638 INFO L131 PetriNetUnfolder]: For 3765/3765 co-relation queries the response was YES. [2023-08-30 04:43:55,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20369 conditions, 7023 events. 5757/7023 cut-off events. For 3765/3765 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 20979 event pairs, 1589 based on Foata normal form. 1/6930 useless extension candidates. Maximal degree in co-relation 20360. Up to 4584 conditions per place. [2023-08-30 04:43:55,686 INFO L137 encePairwiseOnDemand]: 369/375 looper letters, 68 selfloop transitions, 13 changer transitions 5/86 dead transitions. [2023-08-30 04:43:55,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 487 flow [2023-08-30 04:43:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-08-30 04:43:55,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013333333333333 [2023-08-30 04:43:55,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-08-30 04:43:55,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-08-30 04:43:55,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:55,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-08-30 04:43:55,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:55,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:55,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:55,706 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 220 flow. Second operand 3 states and 564 transitions. [2023-08-30 04:43:55,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 487 flow [2023-08-30 04:43:55,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 487 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:43:55,717 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 285 flow [2023-08-30 04:43:55,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-08-30 04:43:55,718 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-08-30 04:43:55,718 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 285 flow [2023-08-30 04:43:55,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:55,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:55,720 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] [2023-08-30 04:43:55,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 04:43:55,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 04:43:55,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:55,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:55,926 INFO L85 PathProgramCache]: Analyzing trace with hash -582451661, now seen corresponding path program 1 times [2023-08-30 04:43:55,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:55,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562022545] [2023-08-30 04:43:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 04:43:56,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:56,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562022545] [2023-08-30 04:43:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562022545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:56,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:56,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:43:56,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916200263] [2023-08-30 04:43:56,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:56,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:43:56,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:43:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:43:56,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 375 [2023-08-30 04:43:56,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:56,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:56,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 375 [2023-08-30 04:43:56,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:56,934 INFO L130 PetriNetUnfolder]: 5619/6885 cut-off events. [2023-08-30 04:43:56,934 INFO L131 PetriNetUnfolder]: For 8188/8188 co-relation queries the response was YES. [2023-08-30 04:43:56,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22665 conditions, 6885 events. 5619/6885 cut-off events. For 8188/8188 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21171 event pairs, 1093 based on Foata normal form. 138/6929 useless extension candidates. Maximal degree in co-relation 22654. Up to 5939 conditions per place. [2023-08-30 04:43:56,982 INFO L137 encePairwiseOnDemand]: 366/375 looper letters, 80 selfloop transitions, 19 changer transitions 7/106 dead transitions. [2023-08-30 04:43:56,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 106 transitions, 662 flow [2023-08-30 04:43:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:43:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:43:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 702 transitions. [2023-08-30 04:43:56,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468 [2023-08-30 04:43:56,985 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 702 transitions. [2023-08-30 04:43:56,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 702 transitions. [2023-08-30 04:43:56,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:56,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 702 transitions. [2023-08-30 04:43:56,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:56,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:56,989 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:56,989 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 285 flow. Second operand 4 states and 702 transitions. [2023-08-30 04:43:56,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 106 transitions, 662 flow [2023-08-30 04:43:57,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 637 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:57,006 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 369 flow [2023-08-30 04:43:57,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=369, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2023-08-30 04:43:57,006 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2023-08-30 04:43:57,006 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 369 flow [2023-08-30 04:43:57,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:57,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:57,007 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] [2023-08-30 04:43:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 04:43:57,007 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:57,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1454552258, now seen corresponding path program 1 times [2023-08-30 04:43:57,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475197200] [2023-08-30 04:43:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 04:43:57,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475197200] [2023-08-30 04:43:57,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475197200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:57,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:57,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:43:57,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656101] [2023-08-30 04:43:57,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:57,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:43:57,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:43:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:43:57,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 375 [2023-08-30 04:43:57,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:57,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:57,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 375 [2023-08-30 04:43:57,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:57,932 INFO L130 PetriNetUnfolder]: 5487/6753 cut-off events. [2023-08-30 04:43:57,932 INFO L131 PetriNetUnfolder]: For 8238/8238 co-relation queries the response was YES. [2023-08-30 04:43:57,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21969 conditions, 6753 events. 5487/6753 cut-off events. For 8238/8238 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 21595 event pairs, 747 based on Foata normal form. 132/6791 useless extension candidates. Maximal degree in co-relation 21957. Up to 5807 conditions per place. [2023-08-30 04:43:57,981 INFO L137 encePairwiseOnDemand]: 366/375 looper letters, 84 selfloop transitions, 27 changer transitions 7/118 dead transitions. [2023-08-30 04:43:57,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 118 transitions, 824 flow [2023-08-30 04:43:57,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:43:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:43:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 702 transitions. [2023-08-30 04:43:57,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468 [2023-08-30 04:43:57,984 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 702 transitions. [2023-08-30 04:43:57,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 702 transitions. [2023-08-30 04:43:57,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:57,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 702 transitions. [2023-08-30 04:43:57,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:57,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:57,988 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:57,988 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 369 flow. Second operand 4 states and 702 transitions. [2023-08-30 04:43:57,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 118 transitions, 824 flow [2023-08-30 04:43:58,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 118 transitions, 799 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:58,006 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 511 flow [2023-08-30 04:43:58,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=511, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2023-08-30 04:43:58,007 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2023-08-30 04:43:58,007 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 511 flow [2023-08-30 04:43:58,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:58,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:58,008 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] [2023-08-30 04:43:58,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 04:43:58,008 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:58,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash -716186441, now seen corresponding path program 1 times [2023-08-30 04:43:58,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:58,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174431016] [2023-08-30 04:43:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 04:43:58,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:58,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174431016] [2023-08-30 04:43:58,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174431016] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:43:58,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780321866] [2023-08-30 04:43:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:58,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:43:58,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:43:58,211 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:43:58,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 04:43:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:58,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 04:43:58,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:43:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:43:58,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:43:58,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780321866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:58,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 04:43:58,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 04:43:58,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137966664] [2023-08-30 04:43:58,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:58,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:58,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:58,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:58,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:43:58,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 375 [2023-08-30 04:43:58,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 511 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:58,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:58,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 375 [2023-08-30 04:43:58,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:59,235 INFO L130 PetriNetUnfolder]: 8377/10263 cut-off events. [2023-08-30 04:43:59,235 INFO L131 PetriNetUnfolder]: For 13247/13247 co-relation queries the response was YES. [2023-08-30 04:43:59,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34067 conditions, 10263 events. 8377/10263 cut-off events. For 13247/13247 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32684 event pairs, 3137 based on Foata normal form. 1/10076 useless extension candidates. Maximal degree in co-relation 34054. Up to 5930 conditions per place. [2023-08-30 04:43:59,294 INFO L137 encePairwiseOnDemand]: 371/375 looper letters, 90 selfloop transitions, 13 changer transitions 9/112 dead transitions. [2023-08-30 04:43:59,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 868 flow [2023-08-30 04:43:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:59,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2023-08-30 04:43:59,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173333333333333 [2023-08-30 04:43:59,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2023-08-30 04:43:59,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2023-08-30 04:43:59,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:59,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2023-08-30 04:43:59,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:59,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:59,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:59,300 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 511 flow. Second operand 3 states and 582 transitions. [2023-08-30 04:43:59,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 868 flow [2023-08-30 04:43:59,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 112 transitions, 843 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:59,318 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 539 flow [2023-08-30 04:43:59,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=539, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2023-08-30 04:43:59,319 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2023-08-30 04:43:59,319 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 539 flow [2023-08-30 04:43:59,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:59,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:59,320 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] [2023-08-30 04:43:59,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 04:43:59,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-08-30 04:43:59,526 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:43:59,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1139523922, now seen corresponding path program 2 times [2023-08-30 04:43:59,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:59,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029997645] [2023-08-30 04:43:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 04:43:59,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:59,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029997645] [2023-08-30 04:43:59,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029997645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:43:59,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712017687] [2023-08-30 04:43:59,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:43:59,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:43:59,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:43:59,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:43:59,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 04:43:59,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 04:43:59,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:43:59,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 04:43:59,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:43:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:43:59,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:43:59,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712017687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:59,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 04:43:59,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 04:43:59,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306937125] [2023-08-30 04:43:59,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:59,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:59,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:59,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:59,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:43:59,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 375 [2023-08-30 04:43:59,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:59,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:59,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 375 [2023-08-30 04:43:59,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:00,966 INFO L130 PetriNetUnfolder]: 11267/13773 cut-off events. [2023-08-30 04:44:00,967 INFO L131 PetriNetUnfolder]: For 18812/18812 co-relation queries the response was YES. [2023-08-30 04:44:01,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47060 conditions, 13773 events. 11267/13773 cut-off events. For 18812/18812 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 46825 event pairs, 2845 based on Foata normal form. 1/13492 useless extension candidates. Maximal degree in co-relation 47046. Up to 8032 conditions per place. [2023-08-30 04:44:01,067 INFO L137 encePairwiseOnDemand]: 371/375 looper letters, 92 selfloop transitions, 13 changer transitions 5/110 dead transitions. [2023-08-30 04:44:01,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 886 flow [2023-08-30 04:44:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:44:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:44:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-30 04:44:01,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137777777777778 [2023-08-30 04:44:01,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-30 04:44:01,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-30 04:44:01,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:01,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-30 04:44:01,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:01,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:01,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:01,073 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 539 flow. Second operand 3 states and 578 transitions. [2023-08-30 04:44:01,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 886 flow [2023-08-30 04:44:01,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 873 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:44:01,102 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 579 flow [2023-08-30 04:44:01,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=579, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2023-08-30 04:44:01,104 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-08-30 04:44:01,104 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 579 flow [2023-08-30 04:44:01,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:01,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:01,105 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] [2023-08-30 04:44:01,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 04:44:01,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:01,311 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:01,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash 647502466, now seen corresponding path program 1 times [2023-08-30 04:44:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474300877] [2023-08-30 04:44:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:01,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474300877] [2023-08-30 04:44:01,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474300877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:44:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578332159] [2023-08-30 04:44:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:01,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:01,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:44:01,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:44:01,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 04:44:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:01,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:44:01,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:44:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:01,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:44:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:01,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578332159] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:44:01,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:44:01,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-30 04:44:01,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137133623] [2023-08-30 04:44:01,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:44:01,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:44:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:01,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:44:01,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:44:01,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:44:01,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 579 flow. Second operand has 5 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:01,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:01,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:44:01,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:03,173 INFO L130 PetriNetUnfolder]: 13707/16717 cut-off events. [2023-08-30 04:44:03,173 INFO L131 PetriNetUnfolder]: For 27851/27851 co-relation queries the response was YES. [2023-08-30 04:44:03,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59109 conditions, 16717 events. 13707/16717 cut-off events. For 27851/27851 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 58112 event pairs, 2725 based on Foata normal form. 504/16939 useless extension candidates. Maximal degree in co-relation 59094. Up to 6838 conditions per place. [2023-08-30 04:44:03,348 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 146 selfloop transitions, 15 changer transitions 2/163 dead transitions. [2023-08-30 04:44:03,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 163 transitions, 1280 flow [2023-08-30 04:44:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:44:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:44:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 927 transitions. [2023-08-30 04:44:03,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4944 [2023-08-30 04:44:03,352 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 927 transitions. [2023-08-30 04:44:03,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 927 transitions. [2023-08-30 04:44:03,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:03,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 927 transitions. [2023-08-30 04:44:03,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:03,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:03,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:03,357 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 579 flow. Second operand 5 states and 927 transitions. [2023-08-30 04:44:03,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 163 transitions, 1280 flow [2023-08-30 04:44:03,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 163 transitions, 1257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:44:03,409 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 625 flow [2023-08-30 04:44:03,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=625, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-08-30 04:44:03,410 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-08-30 04:44:03,410 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 625 flow [2023-08-30 04:44:03,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:03,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:03,411 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] [2023-08-30 04:44:03,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 04:44:03,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:03,617 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:03,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1122926844, now seen corresponding path program 1 times [2023-08-30 04:44:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:03,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250984801] [2023-08-30 04:44:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:03,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:03,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250984801] [2023-08-30 04:44:03,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250984801] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:44:03,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013683560] [2023-08-30 04:44:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:03,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:03,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:44:03,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:44:03,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 04:44:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:03,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:44:03,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:44:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:04,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:44:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:04,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013683560] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:44:04,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:44:04,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 04:44:04,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742433133] [2023-08-30 04:44:04,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:44:04,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:44:04,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:04,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:44:04,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:44:04,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 375 [2023-08-30 04:44:04,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 625 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:04,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:04,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 375 [2023-08-30 04:44:04,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:06,279 INFO L130 PetriNetUnfolder]: 19391/23712 cut-off events. [2023-08-30 04:44:06,280 INFO L131 PetriNetUnfolder]: For 51275/51275 co-relation queries the response was YES. [2023-08-30 04:44:06,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88832 conditions, 23712 events. 19391/23712 cut-off events. For 51275/51275 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 90170 event pairs, 2395 based on Foata normal form. 701/24413 useless extension candidates. Maximal degree in co-relation 88815. Up to 9694 conditions per place. [2023-08-30 04:44:06,607 INFO L137 encePairwiseOnDemand]: 365/375 looper letters, 150 selfloop transitions, 32 changer transitions 26/208 dead transitions. [2023-08-30 04:44:06,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 208 transitions, 1595 flow [2023-08-30 04:44:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 04:44:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 04:44:06,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2023-08-30 04:44:06,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47244444444444444 [2023-08-30 04:44:06,612 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2023-08-30 04:44:06,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2023-08-30 04:44:06,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:06,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2023-08-30 04:44:06,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:06,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 375.0) internal successors, (2625), 7 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:06,620 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 375.0) internal successors, (2625), 7 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:06,620 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 625 flow. Second operand 6 states and 1063 transitions. [2023-08-30 04:44:06,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 208 transitions, 1595 flow [2023-08-30 04:44:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 208 transitions, 1566 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 04:44:07,118 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 706 flow [2023-08-30 04:44:07,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=706, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-08-30 04:44:07,119 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2023-08-30 04:44:07,119 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 706 flow [2023-08-30 04:44:07,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:07,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:07,120 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] [2023-08-30 04:44:07,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 04:44:07,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 04:44:07,329 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:07,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1701805144, now seen corresponding path program 1 times [2023-08-30 04:44:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:07,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55957192] [2023-08-30 04:44:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:07,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:07,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:07,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:07,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55957192] [2023-08-30 04:44:07,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55957192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:44:07,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:44:07,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:44:07,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965562144] [2023-08-30 04:44:07,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:44:07,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:44:07,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:07,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:44:07,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:44:07,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 375 [2023-08-30 04:44:07,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 706 flow. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:07,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:07,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 375 [2023-08-30 04:44:07,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:09,878 INFO L130 PetriNetUnfolder]: 22649/27648 cut-off events. [2023-08-30 04:44:09,879 INFO L131 PetriNetUnfolder]: For 80948/80948 co-relation queries the response was YES. [2023-08-30 04:44:10,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111940 conditions, 27648 events. 22649/27648 cut-off events. For 80948/80948 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 104217 event pairs, 6933 based on Foata normal form. 744/28392 useless extension candidates. Maximal degree in co-relation 111920. Up to 23402 conditions per place. [2023-08-30 04:44:10,059 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 101 selfloop transitions, 26 changer transitions 13/140 dead transitions. [2023-08-30 04:44:10,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 140 transitions, 1245 flow [2023-08-30 04:44:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:44:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:44:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 704 transitions. [2023-08-30 04:44:10,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693333333333333 [2023-08-30 04:44:10,062 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 704 transitions. [2023-08-30 04:44:10,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 704 transitions. [2023-08-30 04:44:10,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:10,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 704 transitions. [2023-08-30 04:44:10,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:10,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:10,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:10,067 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 706 flow. Second operand 4 states and 704 transitions. [2023-08-30 04:44:10,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 140 transitions, 1245 flow [2023-08-30 04:44:10,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 1195 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 04:44:10,275 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 729 flow [2023-08-30 04:44:10,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=729, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2023-08-30 04:44:10,276 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2023-08-30 04:44:10,276 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 729 flow [2023-08-30 04:44:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:10,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:10,277 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] [2023-08-30 04:44:10,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 04:44:10,277 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:10,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1671897129, now seen corresponding path program 1 times [2023-08-30 04:44:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:10,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962931230] [2023-08-30 04:44:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:10,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:10,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962931230] [2023-08-30 04:44:10,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962931230] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:44:10,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982282954] [2023-08-30 04:44:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:10,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:10,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:44:10,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:44:10,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 04:44:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:10,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:44:10,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:44:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:10,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:44:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:10,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982282954] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:44:10,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:44:10,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-30 04:44:10,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585258962] [2023-08-30 04:44:10,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:44:10,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:44:10,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:44:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:44:10,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:44:10,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 729 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:10,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:10,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:44:10,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:13,986 INFO L130 PetriNetUnfolder]: 32633/39966 cut-off events. [2023-08-30 04:44:13,986 INFO L131 PetriNetUnfolder]: For 114939/114939 co-relation queries the response was YES. [2023-08-30 04:44:14,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165523 conditions, 39966 events. 32633/39966 cut-off events. For 114939/114939 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 160348 event pairs, 7203 based on Foata normal form. 1053/41019 useless extension candidates. Maximal degree in co-relation 165501. Up to 16440 conditions per place. [2023-08-30 04:44:14,268 INFO L137 encePairwiseOnDemand]: 369/375 looper letters, 168 selfloop transitions, 16 changer transitions 20/204 dead transitions. [2023-08-30 04:44:14,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 204 transitions, 1746 flow [2023-08-30 04:44:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:44:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:44:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 945 transitions. [2023-08-30 04:44:14,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504 [2023-08-30 04:44:14,276 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 945 transitions. [2023-08-30 04:44:14,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 945 transitions. [2023-08-30 04:44:14,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:14,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 945 transitions. [2023-08-30 04:44:14,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:14,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:14,282 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:14,283 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 729 flow. Second operand 5 states and 945 transitions. [2023-08-30 04:44:14,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 204 transitions, 1746 flow [2023-08-30 04:44:14,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 204 transitions, 1688 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 04:44:14,688 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 743 flow [2023-08-30 04:44:14,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=743, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-08-30 04:44:14,688 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2023-08-30 04:44:14,688 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 743 flow [2023-08-30 04:44:14,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:14,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:14,689 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] [2023-08-30 04:44:14,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 04:44:14,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:14,890 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:14,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:14,890 INFO L85 PathProgramCache]: Analyzing trace with hash -34909708, now seen corresponding path program 2 times [2023-08-30 04:44:14,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:14,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168777725] [2023-08-30 04:44:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:14,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:15,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168777725] [2023-08-30 04:44:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168777725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:44:15,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:44:15,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:44:15,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427061818] [2023-08-30 04:44:15,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:44:15,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:44:15,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:44:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:44:15,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:44:15,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 743 flow. Second operand has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:15,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:15,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:44:15,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:19,102 INFO L130 PetriNetUnfolder]: 42350/51953 cut-off events. [2023-08-30 04:44:19,102 INFO L131 PetriNetUnfolder]: For 164894/164894 co-relation queries the response was YES. [2023-08-30 04:44:19,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226120 conditions, 51953 events. 42350/51953 cut-off events. For 164894/164894 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 221763 event pairs, 6892 based on Foata normal form. 1165/53118 useless extension candidates. Maximal degree in co-relation 226096. Up to 28962 conditions per place. [2023-08-30 04:44:19,469 INFO L137 encePairwiseOnDemand]: 369/375 looper letters, 155 selfloop transitions, 16 changer transitions 27/198 dead transitions. [2023-08-30 04:44:19,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 198 transitions, 1747 flow [2023-08-30 04:44:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:44:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:44:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 937 transitions. [2023-08-30 04:44:19,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4997333333333333 [2023-08-30 04:44:19,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 937 transitions. [2023-08-30 04:44:19,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 937 transitions. [2023-08-30 04:44:19,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:19,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 937 transitions. [2023-08-30 04:44:19,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:19,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:19,477 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:19,478 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 743 flow. Second operand 5 states and 937 transitions. [2023-08-30 04:44:19,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 198 transitions, 1747 flow [2023-08-30 04:44:19,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 198 transitions, 1714 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 04:44:19,931 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 675 flow [2023-08-30 04:44:19,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=675, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2023-08-30 04:44:19,932 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 22 predicate places. [2023-08-30 04:44:19,932 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 675 flow [2023-08-30 04:44:19,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:19,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:19,933 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] [2023-08-30 04:44:19,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 04:44:19,933 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:19,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:19,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1811548761, now seen corresponding path program 1 times [2023-08-30 04:44:19,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:19,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305136550] [2023-08-30 04:44:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:19,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 04:44:20,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:20,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305136550] [2023-08-30 04:44:20,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305136550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:44:20,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:44:20,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:44:20,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714059552] [2023-08-30 04:44:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:44:20,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:44:20,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:44:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:44:21,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 375 [2023-08-30 04:44:21,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 675 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:21,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:21,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 375 [2023-08-30 04:44:21,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:25,338 INFO L130 PetriNetUnfolder]: 45138/55328 cut-off events. [2023-08-30 04:44:25,338 INFO L131 PetriNetUnfolder]: For 233681/233681 co-relation queries the response was YES. [2023-08-30 04:44:25,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255145 conditions, 55328 events. 45138/55328 cut-off events. For 233681/233681 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 235665 event pairs, 7186 based on Foata normal form. 724/56052 useless extension candidates. Maximal degree in co-relation 255118. Up to 31913 conditions per place. [2023-08-30 04:44:25,733 INFO L137 encePairwiseOnDemand]: 366/375 looper letters, 109 selfloop transitions, 12 changer transitions 32/153 dead transitions. [2023-08-30 04:44:25,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 153 transitions, 1367 flow [2023-08-30 04:44:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:44:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:44:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 842 transitions. [2023-08-30 04:44:25,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44906666666666667 [2023-08-30 04:44:25,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 842 transitions. [2023-08-30 04:44:25,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 842 transitions. [2023-08-30 04:44:25,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:25,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 842 transitions. [2023-08-30 04:44:25,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.4) internal successors, (842), 5 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:25,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:25,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:25,741 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 675 flow. Second operand 5 states and 842 transitions. [2023-08-30 04:44:25,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 153 transitions, 1367 flow [2023-08-30 04:44:26,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 153 transitions, 1309 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 04:44:26,789 INFO L231 Difference]: Finished difference. Result has 99 places, 73 transitions, 576 flow [2023-08-30 04:44:26,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=576, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2023-08-30 04:44:26,790 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2023-08-30 04:44:26,790 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 576 flow [2023-08-30 04:44:26,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:26,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:26,791 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] [2023-08-30 04:44:26,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 04:44:26,791 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:26,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:26,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1248591419, now seen corresponding path program 2 times [2023-08-30 04:44:26,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:26,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573421740] [2023-08-30 04:44:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:26,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 04:44:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573421740] [2023-08-30 04:44:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573421740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:44:27,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:44:27,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:44:27,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787967295] [2023-08-30 04:44:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:44:27,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:44:27,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:27,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:44:27,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:44:27,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 375 [2023-08-30 04:44:27,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 73 transitions, 576 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:27,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:27,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 375 [2023-08-30 04:44:27,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:31,698 INFO L130 PetriNetUnfolder]: 46288/56618 cut-off events. [2023-08-30 04:44:31,698 INFO L131 PetriNetUnfolder]: For 244086/244086 co-relation queries the response was YES. [2023-08-30 04:44:32,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260749 conditions, 56618 events. 46288/56618 cut-off events. For 244086/244086 co-relation queries the response was YES. Maximal size of possible extension queue 1404. Compared 235285 event pairs, 17446 based on Foata normal form. 916/57534 useless extension candidates. Maximal degree in co-relation 260720. Up to 52108 conditions per place. [2023-08-30 04:44:32,180 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 107 selfloop transitions, 12 changer transitions 1/120 dead transitions. [2023-08-30 04:44:32,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 120 transitions, 1078 flow [2023-08-30 04:44:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:44:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:44:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 689 transitions. [2023-08-30 04:44:32,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4593333333333333 [2023-08-30 04:44:32,183 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 689 transitions. [2023-08-30 04:44:32,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 689 transitions. [2023-08-30 04:44:32,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:32,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 689 transitions. [2023-08-30 04:44:32,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:32,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:32,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:32,186 INFO L175 Difference]: Start difference. First operand has 99 places, 73 transitions, 576 flow. Second operand 4 states and 689 transitions. [2023-08-30 04:44:32,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 120 transitions, 1078 flow [2023-08-30 04:44:33,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 120 transitions, 1046 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 04:44:33,498 INFO L231 Difference]: Finished difference. Result has 98 places, 74 transitions, 582 flow [2023-08-30 04:44:33,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=582, PETRI_PLACES=98, PETRI_TRANSITIONS=74} [2023-08-30 04:44:33,498 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 23 predicate places. [2023-08-30 04:44:33,499 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 74 transitions, 582 flow [2023-08-30 04:44:33,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:33,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:33,499 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] [2023-08-30 04:44:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 04:44:33,499 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:33,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1655072177, now seen corresponding path program 3 times [2023-08-30 04:44:33,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463024816] [2023-08-30 04:44:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:33,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:33,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:33,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463024816] [2023-08-30 04:44:33,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463024816] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:44:33,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077232363] [2023-08-30 04:44:33,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 04:44:33,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:33,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:44:33,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:44:33,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 04:44:33,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 04:44:33,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:44:33,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:44:33,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:44:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 04:44:34,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:44:34,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077232363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:44:34,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 04:44:34,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-30 04:44:34,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567992904] [2023-08-30 04:44:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:44:34,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:44:34,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:34,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:44:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:44:34,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 375 [2023-08-30 04:44:34,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 74 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:34,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:34,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 375 [2023-08-30 04:44:34,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:38,457 INFO L130 PetriNetUnfolder]: 45676/56006 cut-off events. [2023-08-30 04:44:38,457 INFO L131 PetriNetUnfolder]: For 235547/235547 co-relation queries the response was YES. [2023-08-30 04:44:38,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261691 conditions, 56006 events. 45676/56006 cut-off events. For 235547/235547 co-relation queries the response was YES. Maximal size of possible extension queue 1369. Compared 238051 event pairs, 5398 based on Foata normal form. 612/56618 useless extension candidates. Maximal degree in co-relation 261661. Up to 28889 conditions per place. [2023-08-30 04:44:38,890 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 134 selfloop transitions, 6 changer transitions 43/183 dead transitions. [2023-08-30 04:44:38,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 183 transitions, 1630 flow [2023-08-30 04:44:38,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:44:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:44:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 929 transitions. [2023-08-30 04:44:38,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49546666666666667 [2023-08-30 04:44:38,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 929 transitions. [2023-08-30 04:44:38,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 929 transitions. [2023-08-30 04:44:38,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:38,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 929 transitions. [2023-08-30 04:44:38,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.8) internal successors, (929), 5 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:38,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:38,897 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:38,897 INFO L175 Difference]: Start difference. First operand has 98 places, 74 transitions, 582 flow. Second operand 5 states and 929 transitions. [2023-08-30 04:44:38,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 183 transitions, 1630 flow [2023-08-30 04:44:39,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 183 transitions, 1593 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 04:44:39,663 INFO L231 Difference]: Finished difference. Result has 99 places, 67 transitions, 496 flow [2023-08-30 04:44:39,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=99, PETRI_TRANSITIONS=67} [2023-08-30 04:44:39,664 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2023-08-30 04:44:39,664 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 67 transitions, 496 flow [2023-08-30 04:44:39,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:39,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:39,665 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] [2023-08-30 04:44:39,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 04:44:39,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:39,869 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:39,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1512772625, now seen corresponding path program 4 times [2023-08-30 04:44:39,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:39,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804668385] [2023-08-30 04:44:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:39,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:40,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804668385] [2023-08-30 04:44:40,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804668385] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:44:40,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870190275] [2023-08-30 04:44:40,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 04:44:40,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:40,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:44:40,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:44:40,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 04:44:40,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 04:44:40,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:44:40,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:44:40,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:44:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:44:40,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:44:40,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870190275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:44:40,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 04:44:40,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-08-30 04:44:40,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295767873] [2023-08-30 04:44:40,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:44:40,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:44:40,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:44:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 04:44:40,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 375 [2023-08-30 04:44:40,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 67 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:40,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:40,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 375 [2023-08-30 04:44:40,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:43,381 INFO L130 PetriNetUnfolder]: 32778/40004 cut-off events. [2023-08-30 04:44:43,381 INFO L131 PetriNetUnfolder]: For 185717/185717 co-relation queries the response was YES. [2023-08-30 04:44:43,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189741 conditions, 40004 events. 32778/40004 cut-off events. For 185717/185717 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 161768 event pairs, 3990 based on Foata normal form. 1016/41020 useless extension candidates. Maximal degree in co-relation 189712. Up to 16397 conditions per place. [2023-08-30 04:44:43,989 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 126 selfloop transitions, 8 changer transitions 44/178 dead transitions. [2023-08-30 04:44:43,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 178 transitions, 1520 flow [2023-08-30 04:44:43,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:44:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:44:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 936 transitions. [2023-08-30 04:44:44,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992 [2023-08-30 04:44:44,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 936 transitions. [2023-08-30 04:44:44,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 936 transitions. [2023-08-30 04:44:44,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:44,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 936 transitions. [2023-08-30 04:44:44,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:44,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:44,017 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:44,017 INFO L175 Difference]: Start difference. First operand has 99 places, 67 transitions, 496 flow. Second operand 5 states and 936 transitions. [2023-08-30 04:44:44,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 178 transitions, 1520 flow [2023-08-30 04:44:44,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 178 transitions, 1486 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 04:44:44,369 INFO L231 Difference]: Finished difference. Result has 99 places, 67 transitions, 505 flow [2023-08-30 04:44:44,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=505, PETRI_PLACES=99, PETRI_TRANSITIONS=67} [2023-08-30 04:44:44,370 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2023-08-30 04:44:44,370 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 67 transitions, 505 flow [2023-08-30 04:44:44,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:44,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:44,371 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] [2023-08-30 04:44:44,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 04:44:44,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:44,576 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:44,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash 293402891, now seen corresponding path program 5 times [2023-08-30 04:44:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:44,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261614719] [2023-08-30 04:44:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 04:44:44,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:44,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261614719] [2023-08-30 04:44:44,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261614719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:44:44,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:44:44,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:44:44,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146544092] [2023-08-30 04:44:44,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:44:44,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:44:44,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:44,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:44:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:44:44,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 375 [2023-08-30 04:44:44,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 67 transitions, 505 flow. Second operand has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:44,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:44,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 375 [2023-08-30 04:44:44,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:47,483 INFO L130 PetriNetUnfolder]: 27744/33554 cut-off events. [2023-08-30 04:44:47,483 INFO L131 PetriNetUnfolder]: For 156737/156737 co-relation queries the response was YES. [2023-08-30 04:44:47,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161784 conditions, 33554 events. 27744/33554 cut-off events. For 156737/156737 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 127420 event pairs, 7548 based on Foata normal form. 744/34298 useless extension candidates. Maximal degree in co-relation 161754. Up to 24276 conditions per place. [2023-08-30 04:44:47,760 INFO L137 encePairwiseOnDemand]: 366/375 looper letters, 156 selfloop transitions, 16 changer transitions 0/172 dead transitions. [2023-08-30 04:44:47,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 172 transitions, 1468 flow [2023-08-30 04:44:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 04:44:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 04:44:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1023 transitions. [2023-08-30 04:44:47,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45466666666666666 [2023-08-30 04:44:47,762 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1023 transitions. [2023-08-30 04:44:47,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1023 transitions. [2023-08-30 04:44:47,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:47,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1023 transitions. [2023-08-30 04:44:47,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:47,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 375.0) internal successors, (2625), 7 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:47,766 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 375.0) internal successors, (2625), 7 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:47,767 INFO L175 Difference]: Start difference. First operand has 99 places, 67 transitions, 505 flow. Second operand 6 states and 1023 transitions. [2023-08-30 04:44:47,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 172 transitions, 1468 flow [2023-08-30 04:44:48,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 1448 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 04:44:48,289 INFO L231 Difference]: Finished difference. Result has 103 places, 71 transitions, 568 flow [2023-08-30 04:44:48,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=103, PETRI_TRANSITIONS=71} [2023-08-30 04:44:48,289 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 28 predicate places. [2023-08-30 04:44:48,289 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 71 transitions, 568 flow [2023-08-30 04:44:48,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:48,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:48,290 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] [2023-08-30 04:44:48,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 04:44:48,290 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:48,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash 726558489, now seen corresponding path program 1 times [2023-08-30 04:44:48,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107988179] [2023-08-30 04:44:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 04:44:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107988179] [2023-08-30 04:44:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107988179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:44:48,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:44:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:44:48,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962116169] [2023-08-30 04:44:48,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:44:48,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:44:48,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:44:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:44:48,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:44:48,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 71 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:48,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:48,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:44:48,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:51,596 INFO L130 PetriNetUnfolder]: 32236/38958 cut-off events. [2023-08-30 04:44:51,597 INFO L131 PetriNetUnfolder]: For 202809/202809 co-relation queries the response was YES. [2023-08-30 04:44:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197404 conditions, 38958 events. 32236/38958 cut-off events. For 202809/202809 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 149096 event pairs, 2700 based on Foata normal form. 912/39870 useless extension candidates. Maximal degree in co-relation 197372. Up to 24598 conditions per place. [2023-08-30 04:44:51,979 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 181 selfloop transitions, 10 changer transitions 0/191 dead transitions. [2023-08-30 04:44:51,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 191 transitions, 1883 flow [2023-08-30 04:44:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:44:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:44:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 918 transitions. [2023-08-30 04:44:51,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4896 [2023-08-30 04:44:51,981 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 918 transitions. [2023-08-30 04:44:51,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 918 transitions. [2023-08-30 04:44:51,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:44:51,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 918 transitions. [2023-08-30 04:44:51,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:51,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:51,985 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:51,985 INFO L175 Difference]: Start difference. First operand has 103 places, 71 transitions, 568 flow. Second operand 5 states and 918 transitions. [2023-08-30 04:44:51,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 191 transitions, 1883 flow [2023-08-30 04:44:52,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 191 transitions, 1775 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-08-30 04:44:52,829 INFO L231 Difference]: Finished difference. Result has 107 places, 75 transitions, 592 flow [2023-08-30 04:44:52,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=592, PETRI_PLACES=107, PETRI_TRANSITIONS=75} [2023-08-30 04:44:52,829 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 32 predicate places. [2023-08-30 04:44:52,829 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 75 transitions, 592 flow [2023-08-30 04:44:52,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:52,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:44:52,830 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] [2023-08-30 04:44:52,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 04:44:52,830 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:44:52,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:44:52,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1189894895, now seen corresponding path program 1 times [2023-08-30 04:44:52,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:44:52,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424312240] [2023-08-30 04:44:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:52,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:44:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 04:44:53,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:44:53,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424312240] [2023-08-30 04:44:53,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424312240] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:44:53,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395610460] [2023-08-30 04:44:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:44:53,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:44:53,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:44:53,705 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:44:53,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 04:44:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:54,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 04:44:54,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:44:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 04:44:55,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:44:55,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395610460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:44:55,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 04:44:55,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-30 04:44:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221338540] [2023-08-30 04:44:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:44:55,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:44:55,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:55,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:44:55,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-30 04:44:55,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 375 [2023-08-30 04:44:55,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 75 transitions, 592 flow. Second operand has 6 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:44:55,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:55,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 375 [2023-08-30 04:44:55,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:59,897 INFO L130 PetriNetUnfolder]: 37336/47366 cut-off events. [2023-08-30 04:44:59,898 INFO L131 PetriNetUnfolder]: For 323991/323991 co-relation queries the response was YES. [2023-08-30 04:45:00,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248920 conditions, 47366 events. 37336/47366 cut-off events. For 323991/323991 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 222417 event pairs, 8850 based on Foata normal form. 10079/57445 useless extension candidates. Maximal degree in co-relation 248885. Up to 28930 conditions per place. [2023-08-30 04:45:00,332 INFO L137 encePairwiseOnDemand]: 365/375 looper letters, 98 selfloop transitions, 4 changer transitions 78/180 dead transitions. [2023-08-30 04:45:00,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 180 transitions, 1621 flow [2023-08-30 04:45:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:45:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:45:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2023-08-30 04:45:00,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48746666666666666 [2023-08-30 04:45:00,334 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2023-08-30 04:45:00,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2023-08-30 04:45:00,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:45:00,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2023-08-30 04:45:00,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:45:00,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:45:00,337 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:45:00,337 INFO L175 Difference]: Start difference. First operand has 107 places, 75 transitions, 592 flow. Second operand 5 states and 914 transitions. [2023-08-30 04:45:00,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 180 transitions, 1621 flow [2023-08-30 04:45:01,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 180 transitions, 1572 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-08-30 04:45:01,672 INFO L231 Difference]: Finished difference. Result has 112 places, 69 transitions, 571 flow [2023-08-30 04:45:01,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=571, PETRI_PLACES=112, PETRI_TRANSITIONS=69} [2023-08-30 04:45:01,672 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 37 predicate places. [2023-08-30 04:45:01,672 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 69 transitions, 571 flow [2023-08-30 04:45:01,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:45:01,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:45:01,673 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] [2023-08-30 04:45:01,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 04:45:01,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:45:01,877 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:45:01,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:45:01,879 INFO L85 PathProgramCache]: Analyzing trace with hash -421621977, now seen corresponding path program 2 times [2023-08-30 04:45:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:45:01,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919950561] [2023-08-30 04:45:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:45:01,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:45:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:45:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 04:45:02,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:45:02,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919950561] [2023-08-30 04:45:02,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919950561] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:45:02,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042182807] [2023-08-30 04:45:02,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:45:02,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:45:02,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:45:02,438 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:45:02,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 04:49:26,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 04:49:26,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:49:26,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 04:49:26,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:49:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:49:45,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:50:25,256 WARN L222 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 1130 DAG size of output: 1127 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15