./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/goblint-regression/28-race_reach_87-lists_racefree.i -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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:07:20,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:07:20,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:07:20,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:07:20,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:07:20,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:07:20,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:07:20,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:07:20,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:07:20,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:07:20,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:07:20,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:07:20,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:07:20,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:07:20,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:07:20,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:07:20,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:07:20,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:07:20,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:07:20,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:07:20,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:07:20,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:07:20,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:07:20,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:07:20,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:07:20,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:07:20,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:07:20,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:07:20,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:07:20,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:07:20,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:07:20,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:07:20,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:07:20,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:07:20,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:07:20,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:07:20,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:07:20,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:07:20,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:07:20,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:07:20,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:07:20,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:07:20,214 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:07:20,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:07:20,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:07:20,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:07:20,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:07:20,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:07:20,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:07:20,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:07:20,217 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:07:20,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:07:20,218 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:07:20,219 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:07:20,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:07:20,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:07:20,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:07:20,219 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:07:20,220 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:07:20,220 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:07:20,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:07:20,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:07:20,220 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:07:20,221 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:07:20,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:07:20,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:07:20,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:07:20,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:07:20,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:07:20,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:07:20,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:07:20,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:07:20,222 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:07:20,223 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:07:20,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:07:20,223 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:07:20,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:07:20,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:07:20,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:07:20,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:07:20,574 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:07:20,575 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:07:20,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-29 22:07:21,803 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:07:22,181 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:07:22,181 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-29 22:07:22,195 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ca59f0a3/a32647f53e394420a8735ccbafeaad14/FLAG06fa115c9 [2023-08-29 22:07:22,207 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ca59f0a3/a32647f53e394420a8735ccbafeaad14 [2023-08-29 22:07:22,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:07:22,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:07:22,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:07:22,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:07:22,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:07:22,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744b8aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22, skipping insertion in model container [2023-08-29 22:07:22,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:07:22,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:07:22,582 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-29 22:07:22,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:07:22,713 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:07:22,750 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-29 22:07:22,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:07:22,851 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:07:22,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22 WrapperNode [2023-08-29 22:07:22,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:07:22,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:07:22,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:07:22,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:07:22,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,930 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 228 [2023-08-29 22:07:22,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:07:22,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:07:22,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:07:22,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:07:22,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:22,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:07:22,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:07:22,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:07:22,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:07:23,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (1/1) ... [2023-08-29 22:07:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:07:23,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:07:23,038 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) [2023-08-29 22:07:23,062 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 [2023-08-29 22:07:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:07:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 22:07:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 22:07:23,079 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 22:07:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:07:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 22:07:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 22:07:23,080 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 22:07:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:07:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 22:07:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 22:07:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:07:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 22:07:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:07:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:07:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:07:23,083 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:07:23,304 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:07:23,306 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:07:23,718 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:07:23,727 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:07:23,727 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 22:07:23,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:07:23 BoogieIcfgContainer [2023-08-29 22:07:23,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:07:23,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:07:23,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:07:23,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:07:23,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:07:22" (1/3) ... [2023-08-29 22:07:23,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5f81c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:07:23, skipping insertion in model container [2023-08-29 22:07:23,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:07:22" (2/3) ... [2023-08-29 22:07:23,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5f81c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:07:23, skipping insertion in model container [2023-08-29 22:07:23,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:07:23" (3/3) ... [2023-08-29 22:07:23,740 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-08-29 22:07:23,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:07:23,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-08-29 22:07:23,755 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:07:23,867 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 22:07:23,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 275 transitions, 572 flow [2023-08-29 22:07:24,153 INFO L130 PetriNetUnfolder]: 54/518 cut-off events. [2023-08-29 22:07:24,153 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 22:07:24,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 518 events. 54/518 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2398 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 262. Up to 8 conditions per place. [2023-08-29 22:07:24,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 275 transitions, 572 flow [2023-08-29 22:07:24,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 275 transitions, 572 flow [2023-08-29 22:07:24,184 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:07:24,194 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 275 transitions, 572 flow [2023-08-29 22:07:24,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 275 transitions, 572 flow [2023-08-29 22:07:24,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 275 transitions, 572 flow [2023-08-29 22:07:24,267 INFO L130 PetriNetUnfolder]: 54/518 cut-off events. [2023-08-29 22:07:24,268 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 22:07:24,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 518 events. 54/518 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2398 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 262. Up to 8 conditions per place. [2023-08-29 22:07:24,290 INFO L119 LiptonReduction]: Number of co-enabled transitions 24910 [2023-08-29 22:07:33,918 INFO L134 LiptonReduction]: Checked pairs total: 64329 [2023-08-29 22:07:33,919 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-08-29 22:07:33,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:07:33,938 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;@6f69a905, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:07:33,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2023-08-29 22:07:33,941 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-29 22:07:33,941 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:07:33,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:33,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:07:33,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:33,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash 34191, now seen corresponding path program 1 times [2023-08-29 22:07:33,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455189079] [2023-08-29 22:07:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:07:34,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:34,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455189079] [2023-08-29 22:07:34,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455189079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:07:34,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:07:34,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:07:34,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743838073] [2023-08-29 22:07:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:07:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:07:34,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:07:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:07:34,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 506 [2023-08-29 22:07:34,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 114 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 252.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:34,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:34,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 506 [2023-08-29 22:07:34,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:36,761 INFO L130 PetriNetUnfolder]: 16503/28525 cut-off events. [2023-08-29 22:07:36,762 INFO L131 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2023-08-29 22:07:36,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53982 conditions, 28525 events. 16503/28525 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 224721 event pairs, 15828 based on Foata normal form. 1160/15678 useless extension candidates. Maximal degree in co-relation 51154. Up to 25300 conditions per place. [2023-08-29 22:07:36,963 INFO L137 encePairwiseOnDemand]: 491/506 looper letters, 79 selfloop transitions, 0 changer transitions 0/99 dead transitions. [2023-08-29 22:07:36,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 99 transitions, 378 flow [2023-08-29 22:07:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:07:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:07:36,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 596 transitions. [2023-08-29 22:07:36,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5889328063241107 [2023-08-29 22:07:36,980 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 596 transitions. [2023-08-29 22:07:36,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 596 transitions. [2023-08-29 22:07:36,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:36,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 596 transitions. [2023-08-29 22:07:36,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 298.0) internal successors, (596), 2 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:36,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 506.0) internal successors, (1518), 3 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:37,000 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 506.0) internal successors, (1518), 3 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:37,003 INFO L175 Difference]: Start difference. First operand has 101 places, 114 transitions, 250 flow. Second operand 2 states and 596 transitions. [2023-08-29 22:07:37,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 99 transitions, 378 flow [2023-08-29 22:07:37,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 99 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:07:37,022 INFO L231 Difference]: Finished difference. Result has 98 places, 99 transitions, 220 flow [2023-08-29 22:07:37,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=220, PETRI_PLACES=98, PETRI_TRANSITIONS=99} [2023-08-29 22:07:37,038 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2023-08-29 22:07:37,039 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 99 transitions, 220 flow [2023-08-29 22:07:37,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 252.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:37,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:37,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:07:37,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:07:37,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:37,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:37,047 INFO L85 PathProgramCache]: Analyzing trace with hash 34188, now seen corresponding path program 1 times [2023-08-29 22:07:37,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:37,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393390599] [2023-08-29 22:07:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:37,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:07:37,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:37,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393390599] [2023-08-29 22:07:37,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393390599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:07:37,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:07:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:07:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760201634] [2023-08-29 22:07:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:07:37,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:07:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:07:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:07:37,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 506 [2023-08-29 22:07:37,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 99 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:37,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:37,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 506 [2023-08-29 22:07:37,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:39,428 INFO L130 PetriNetUnfolder]: 15240/25773 cut-off events. [2023-08-29 22:07:39,428 INFO L131 PetriNetUnfolder]: For 182/182 co-relation queries the response was YES. [2023-08-29 22:07:39,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49442 conditions, 25773 events. 15240/25773 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 201119 event pairs, 10420 based on Foata normal form. 0/13421 useless extension candidates. Maximal degree in co-relation 49437. Up to 16518 conditions per place. [2023-08-29 22:07:39,603 INFO L137 encePairwiseOnDemand]: 501/506 looper letters, 118 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2023-08-29 22:07:39,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 140 transitions, 542 flow [2023-08-29 22:07:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:07:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:07:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2023-08-29 22:07:39,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.567193675889328 [2023-08-29 22:07:39,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2023-08-29 22:07:39,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2023-08-29 22:07:39,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:39,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2023-08-29 22:07:39,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:39,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:39,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:39,617 INFO L175 Difference]: Start difference. First operand has 98 places, 99 transitions, 220 flow. Second operand 3 states and 861 transitions. [2023-08-29 22:07:39,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 140 transitions, 542 flow [2023-08-29 22:07:39,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 140 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:07:39,623 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 228 flow [2023-08-29 22:07:39,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2023-08-29 22:07:39,625 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -1 predicate places. [2023-08-29 22:07:39,625 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 228 flow [2023-08-29 22:07:39,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:39,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:39,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:07:39,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:07:39,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:39,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:39,629 INFO L85 PathProgramCache]: Analyzing trace with hash 34189, now seen corresponding path program 1 times [2023-08-29 22:07:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:39,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5890257] [2023-08-29 22:07:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:39,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:07:39,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:39,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5890257] [2023-08-29 22:07:39,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5890257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:07:39,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:07:39,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:07:39,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097876825] [2023-08-29 22:07:39,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:07:39,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:07:39,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:39,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:07:39,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:07:39,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 506 [2023-08-29 22:07:39,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:39,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:39,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 506 [2023-08-29 22:07:39,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:41,635 INFO L130 PetriNetUnfolder]: 15320/26560 cut-off events. [2023-08-29 22:07:41,635 INFO L131 PetriNetUnfolder]: For 826/826 co-relation queries the response was YES. [2023-08-29 22:07:41,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51368 conditions, 26560 events. 15320/26560 cut-off events. For 826/826 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 207951 event pairs, 14675 based on Foata normal form. 0/14586 useless extension candidates. Maximal degree in co-relation 51361. Up to 23523 conditions per place. [2023-08-29 22:07:41,809 INFO L137 encePairwiseOnDemand]: 502/506 looper letters, 77 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-29 22:07:41,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 388 flow [2023-08-29 22:07:41,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:07:41,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:07:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 807 transitions. [2023-08-29 22:07:41,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316205533596838 [2023-08-29 22:07:41,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 807 transitions. [2023-08-29 22:07:41,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 807 transitions. [2023-08-29 22:07:41,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:41,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 807 transitions. [2023-08-29 22:07:41,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:41,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:41,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:41,819 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 228 flow. Second operand 3 states and 807 transitions. [2023-08-29 22:07:41,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 388 flow [2023-08-29 22:07:41,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 99 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:07:41,827 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 238 flow [2023-08-29 22:07:41,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2023-08-29 22:07:41,829 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 0 predicate places. [2023-08-29 22:07:41,829 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 238 flow [2023-08-29 22:07:41,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:41,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:41,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:07:41,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 22:07:41,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:41,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1061467, now seen corresponding path program 1 times [2023-08-29 22:07:41,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:41,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471508137] [2023-08-29 22:07:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:41,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:07:42,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471508137] [2023-08-29 22:07:42,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471508137] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:07:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716978640] [2023-08-29 22:07:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:42,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:07:42,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:07:42,189 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) [2023-08-29 22:07:42,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 22:07:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:42,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 22:07:42,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:07:42,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:07:42,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:07:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:07:42,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:07:46,582 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:07:46,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2023-08-29 22:07:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:07:50,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716978640] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:07:50,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:07:50,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-29 22:07:50,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110221877] [2023-08-29 22:07:50,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:07:50,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:07:50,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:07:50,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:07:52,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 506 [2023-08-29 22:07:52,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 233.125) internal successors, (1865), 8 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:52,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:52,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 506 [2023-08-29 22:07:52,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:57,375 INFO L130 PetriNetUnfolder]: 37570/64209 cut-off events. [2023-08-29 22:07:57,375 INFO L131 PetriNetUnfolder]: For 726/726 co-relation queries the response was YES. [2023-08-29 22:07:57,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123695 conditions, 64209 events. 37570/64209 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 566848 event pairs, 30882 based on Foata normal form. 0/32702 useless extension candidates. Maximal degree in co-relation 123687. Up to 24423 conditions per place. [2023-08-29 22:07:57,688 INFO L137 encePairwiseOnDemand]: 501/506 looper letters, 213 selfloop transitions, 7 changer transitions 0/240 dead transitions. [2023-08-29 22:07:57,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 240 transitions, 1008 flow [2023-08-29 22:07:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:07:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:07:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1616 transitions. [2023-08-29 22:07:57,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322793148880105 [2023-08-29 22:07:57,692 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1616 transitions. [2023-08-29 22:07:57,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1616 transitions. [2023-08-29 22:07:57,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:57,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1616 transitions. [2023-08-29 22:07:57,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.3333333333333) internal successors, (1616), 6 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:57,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 506.0) internal successors, (3542), 7 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:57,704 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 506.0) internal successors, (3542), 7 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:57,704 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 238 flow. Second operand 6 states and 1616 transitions. [2023-08-29 22:07:57,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 240 transitions, 1008 flow [2023-08-29 22:07:57,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 240 transitions, 1004 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 22:07:57,712 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 286 flow [2023-08-29 22:07:57,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2023-08-29 22:07:57,714 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 7 predicate places. [2023-08-29 22:07:57,714 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 286 flow [2023-08-29 22:07:57,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 233.125) internal successors, (1865), 8 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:57,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:57,715 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-29 22:07:57,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 22:07:57,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:07:57,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:57,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:57,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1020119513, now seen corresponding path program 1 times [2023-08-29 22:07:57,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:57,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807852481] [2023-08-29 22:07:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 22:07:58,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:58,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807852481] [2023-08-29 22:07:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807852481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:07:58,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:07:58,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:07:58,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753562716] [2023-08-29 22:07:58,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:07:58,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:07:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:58,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:07:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:07:58,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 506 [2023-08-29 22:07:58,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:07:58,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:58,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 506 [2023-08-29 22:07:58,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:08:01,806 INFO L130 PetriNetUnfolder]: 35011/59790 cut-off events. [2023-08-29 22:08:01,806 INFO L131 PetriNetUnfolder]: For 2015/2015 co-relation queries the response was YES. [2023-08-29 22:08:01,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117633 conditions, 59790 events. 35011/59790 cut-off events. For 2015/2015 co-relation queries the response was YES. Maximal size of possible extension queue 1850. Compared 522819 event pairs, 28413 based on Foata normal form. 0/32309 useless extension candidates. Maximal degree in co-relation 117622. Up to 45636 conditions per place. [2023-08-29 22:08:02,123 INFO L137 encePairwiseOnDemand]: 502/506 looper letters, 120 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2023-08-29 22:08:02,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 144 transitions, 614 flow [2023-08-29 22:08:02,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:08:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:08:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-08-29 22:08:02,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5573122529644269 [2023-08-29 22:08:02,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-08-29 22:08:02,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-08-29 22:08:02,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:08:02,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-08-29 22:08:02,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:02,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:02,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:02,134 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 286 flow. Second operand 3 states and 846 transitions. [2023-08-29 22:08:02,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 144 transitions, 614 flow [2023-08-29 22:08:02,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 144 transitions, 608 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 22:08:02,139 INFO L231 Difference]: Finished difference. Result has 107 places, 102 transitions, 284 flow [2023-08-29 22:08:02,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=107, PETRI_TRANSITIONS=102} [2023-08-29 22:08:02,141 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 6 predicate places. [2023-08-29 22:08:02,141 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 102 transitions, 284 flow [2023-08-29 22:08:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:02,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:08:02,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-29 22:08:02,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 22:08:02,142 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:08:02,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:08:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1020119515, now seen corresponding path program 1 times [2023-08-29 22:08:02,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:08:02,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281431657] [2023-08-29 22:08:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:08:02,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:08:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:08:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:08:02,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:08:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281431657] [2023-08-29 22:08:02,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281431657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:08:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501138002] [2023-08-29 22:08:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:08:02,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:08:02,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:08:02,221 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) [2023-08-29 22:08:02,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 22:08:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:08:02,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 22:08:02,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:08:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:08:02,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:08:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:08:02,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501138002] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:08:02,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:08:02,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-29 22:08:02,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747072535] [2023-08-29 22:08:02,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:08:02,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 22:08:02,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:08:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 22:08:02,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-08-29 22:08:02,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 506 [2023-08-29 22:08:02,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 102 transitions, 284 flow. Second operand has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:02,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:08:02,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 506 [2023-08-29 22:08:02,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:08:04,219 INFO L130 PetriNetUnfolder]: 14468/25080 cut-off events. [2023-08-29 22:08:04,220 INFO L131 PetriNetUnfolder]: For 1722/1722 co-relation queries the response was YES. [2023-08-29 22:08:04,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49076 conditions, 25080 events. 14468/25080 cut-off events. For 1722/1722 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 194370 event pairs, 13852 based on Foata normal form. 4/14019 useless extension candidates. Maximal degree in co-relation 49064. Up to 22219 conditions per place. [2023-08-29 22:08:04,306 INFO L137 encePairwiseOnDemand]: 502/506 looper letters, 76 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-29 22:08:04,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 468 flow [2023-08-29 22:08:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:08:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:08:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2056 transitions. [2023-08-29 22:08:04,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079051383399209 [2023-08-29 22:08:04,314 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2056 transitions. [2023-08-29 22:08:04,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2056 transitions. [2023-08-29 22:08:04,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:08:04,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2056 transitions. [2023-08-29 22:08:04,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:04,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 506.0) internal successors, (4554), 9 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:04,325 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 506.0) internal successors, (4554), 9 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:04,325 INFO L175 Difference]: Start difference. First operand has 107 places, 102 transitions, 284 flow. Second operand 8 states and 2056 transitions. [2023-08-29 22:08:04,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 468 flow [2023-08-29 22:08:04,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 454 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-29 22:08:04,330 INFO L231 Difference]: Finished difference. Result has 117 places, 103 transitions, 316 flow [2023-08-29 22:08:04,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=316, PETRI_PLACES=117, PETRI_TRANSITIONS=103} [2023-08-29 22:08:04,331 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 16 predicate places. [2023-08-29 22:08:04,331 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 103 transitions, 316 flow [2023-08-29 22:08:04,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:04,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:08:04,333 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-29 22:08:04,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 22:08:04,537 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,SelfDestructingSolverStorable5 [2023-08-29 22:08:04,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:08:04,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:08:04,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1558989069, now seen corresponding path program 2 times [2023-08-29 22:08:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:08:04,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383001137] [2023-08-29 22:08:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:08:04,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:08:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:08:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:08:05,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:08:05,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383001137] [2023-08-29 22:08:05,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383001137] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:08:05,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250799334] [2023-08-29 22:08:05,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:08:05,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:08:05,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:08:05,213 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) [2023-08-29 22:08:05,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 22:08:05,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:08:05,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:08:05,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-29 22:08:05,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:08:05,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:05,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:08:05,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:05,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:08:05,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:05,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:08:05,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:05,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:08:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:08:05,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:08:07,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:08:07,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2023-08-29 22:08:11,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:08:11,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2023-08-29 22:08:16,021 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:08:16,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 76 [2023-08-29 22:08:20,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:08:20,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 82 [2023-08-29 22:08:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:08:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250799334] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:08:22,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:08:22,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-29 22:08:22,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725088488] [2023-08-29 22:08:22,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:08:22,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-29 22:08:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:08:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-29 22:08:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-08-29 22:08:29,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 506 [2023-08-29 22:08:29,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 103 transitions, 316 flow. Second operand has 17 states, 17 states have (on average 233.05882352941177) internal successors, (3962), 17 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:29,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:08:29,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 506 [2023-08-29 22:08:29,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:08:32,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:08:39,042 INFO L130 PetriNetUnfolder]: 45377/77616 cut-off events. [2023-08-29 22:08:39,042 INFO L131 PetriNetUnfolder]: For 978/978 co-relation queries the response was YES. [2023-08-29 22:08:39,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149666 conditions, 77616 events. 45377/77616 cut-off events. For 978/978 co-relation queries the response was YES. Maximal size of possible extension queue 2336. Compared 701471 event pairs, 33167 based on Foata normal form. 6/39962 useless extension candidates. Maximal degree in co-relation 149650. Up to 23570 conditions per place. [2023-08-29 22:08:39,396 INFO L137 encePairwiseOnDemand]: 501/506 looper letters, 291 selfloop transitions, 15 changer transitions 0/326 dead transitions. [2023-08-29 22:08:39,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 326 transitions, 1496 flow [2023-08-29 22:08:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 22:08:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 22:08:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3096 transitions. [2023-08-29 22:08:39,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098814229249012 [2023-08-29 22:08:39,402 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3096 transitions. [2023-08-29 22:08:39,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3096 transitions. [2023-08-29 22:08:39,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:08:39,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3096 transitions. [2023-08-29 22:08:39,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 258.0) internal successors, (3096), 12 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:39,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 506.0) internal successors, (6578), 13 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:39,417 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 506.0) internal successors, (6578), 13 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:39,417 INFO L175 Difference]: Start difference. First operand has 117 places, 103 transitions, 316 flow. Second operand 12 states and 3096 transitions. [2023-08-29 22:08:39,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 326 transitions, 1496 flow [2023-08-29 22:08:39,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 326 transitions, 1455 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-08-29 22:08:39,423 INFO L231 Difference]: Finished difference. Result has 124 places, 110 transitions, 363 flow [2023-08-29 22:08:39,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=363, PETRI_PLACES=124, PETRI_TRANSITIONS=110} [2023-08-29 22:08:39,424 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 23 predicate places. [2023-08-29 22:08:39,424 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 110 transitions, 363 flow [2023-08-29 22:08:39,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 233.05882352941177) internal successors, (3962), 17 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:39,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:08:39,426 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1] [2023-08-29 22:08:39,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-29 22:08:39,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:08:39,631 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:08:39,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:08:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1931389349, now seen corresponding path program 2 times [2023-08-29 22:08:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:08:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487256191] [2023-08-29 22:08:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:08:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:08:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:08:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:08:39,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:08:39,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487256191] [2023-08-29 22:08:39,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487256191] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:08:39,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108924209] [2023-08-29 22:08:39,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:08:39,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:08:39,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:08:39,804 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) [2023-08-29 22:08:39,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 22:08:39,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 22:08:39,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:08:39,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 22:08:39,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:08:39,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-29 22:08:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-29 22:08:39,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:08:39,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108924209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:08:39,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:08:39,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2023-08-29 22:08:39,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293643538] [2023-08-29 22:08:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:08:39,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:08:39,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:08:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:08:39,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:08:40,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 506 [2023-08-29 22:08:40,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 110 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:40,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:08:40,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 506 [2023-08-29 22:08:40,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:08:45,172 INFO L130 PetriNetUnfolder]: 44848/75872 cut-off events. [2023-08-29 22:08:45,172 INFO L131 PetriNetUnfolder]: For 2714/2714 co-relation queries the response was YES. [2023-08-29 22:08:45,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149983 conditions, 75872 events. 44848/75872 cut-off events. For 2714/2714 co-relation queries the response was YES. Maximal size of possible extension queue 2158. Compared 666508 event pairs, 40053 based on Foata normal form. 5/41187 useless extension candidates. Maximal degree in co-relation 149965. Up to 68124 conditions per place. [2023-08-29 22:08:45,546 INFO L137 encePairwiseOnDemand]: 501/506 looper letters, 90 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-08-29 22:08:45,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 113 transitions, 555 flow [2023-08-29 22:08:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:08:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:08:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 813 transitions. [2023-08-29 22:08:45,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355731225296443 [2023-08-29 22:08:45,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 813 transitions. [2023-08-29 22:08:45,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 813 transitions. [2023-08-29 22:08:45,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:08:45,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 813 transitions. [2023-08-29 22:08:45,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:45,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:45,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 506.0) internal successors, (2024), 4 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:45,553 INFO L175 Difference]: Start difference. First operand has 124 places, 110 transitions, 363 flow. Second operand 3 states and 813 transitions. [2023-08-29 22:08:45,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 113 transitions, 555 flow [2023-08-29 22:08:45,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 113 transitions, 532 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-29 22:08:45,559 INFO L231 Difference]: Finished difference. Result has 121 places, 112 transitions, 363 flow [2023-08-29 22:08:45,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2023-08-29 22:08:45,561 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 20 predicate places. [2023-08-29 22:08:45,561 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 363 flow [2023-08-29 22:08:45,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:08:45,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:08:45,562 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-29 22:08:45,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 22:08:45,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:08:45,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:08:45,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:08:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1709844045, now seen corresponding path program 3 times [2023-08-29 22:08:45,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:08:45,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212522656] [2023-08-29 22:08:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:08:45,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:08:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:08:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:08:47,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:08:47,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212522656] [2023-08-29 22:08:47,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212522656] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:08:47,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884873076] [2023-08-29 22:08:47,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:08:47,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:08:47,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:08:47,933 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) [2023-08-29 22:08:47,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 22:09:07,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-29 22:09:07,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:09:07,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 109 conjunts are in the unsatisfiable core [2023-08-29 22:09:07,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:09:08,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:09:08,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:09:08,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:09:08,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:09:08,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:09:08,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:09:08,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:09:08,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:09:08,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:09:08,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:09:08,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:09:08,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:09:08,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:09:08,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:09:08,355 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 22:09:08,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-08-29 22:09:08,457 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2023-08-29 22:09:08,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 43 [2023-08-29 22:09:08,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:09:08,587 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-29 22:09:08,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2023-08-29 22:09:08,602 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 22:09:08,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-29 22:09:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:09:08,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:09:12,752 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:09:12,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-08-29 22:09:12,846 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:09:12,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-08-29 22:09:13,212 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:09:13,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-08-29 22:09:15,410 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:09:15,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-08-29 22:09:19,697 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:09:19,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-08-29 22:09:28,000 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:09:28,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-08-29 22:09:38,369 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:09:38,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-08-29 22:09:48,678 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:09:48,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-08-29 22:10:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:10:00,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884873076] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:10:00,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:10:00,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-08-29 22:10:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269380245] [2023-08-29 22:10:00,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:10:00,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-29 22:10:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:10:00,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-29 22:10:00,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=927, Unknown=23, NotChecked=0, Total=1190 [2023-08-29 22:10:03,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:05,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:07,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:09,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:12,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:14,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:16,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:18,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:20,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:22,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:24,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:27,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:29,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:31,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:33,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:35,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:37,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:39,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:41,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:44,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:46,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:48,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:49,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:51,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:53,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:55,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:57,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:59,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:01,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:03,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:05,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:07,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:09,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:11,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:14,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:16,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:18,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:20,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:22,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:24,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:26,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:29,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:31,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:33,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:34,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:36,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:38,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:40,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:43,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:45,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:47,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:49,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:51,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:53,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:55,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:58,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:00,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:02,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:04,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:06,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:08,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:10,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:13,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:15,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:17,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:19,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:21,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:23,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:25,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:28,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:30,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:32,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:34,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:36,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:38,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:38,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 506 [2023-08-29 22:12:38,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 363 flow. Second operand has 35 states, 35 states have (on average 163.02857142857144) internal successors, (5706), 35 states have internal predecessors, (5706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:12:38,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:12:38,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 506 [2023-08-29 22:12:38,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:13:17,969 WARN L222 SmtUtils]: Spent 37.79s on a formula simplification. DAG size of input: 241 DAG size of output: 240 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:13:20,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:22,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:26,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:28,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:30,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:32,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:34,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:37,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:39,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:46,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:18,856 WARN L222 SmtUtils]: Spent 30.33s on a formula simplification. DAG size of input: 215 DAG size of output: 214 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:14:20,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:22,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:24,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:26,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-29 22:14:28,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:31,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:32,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:34,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:37,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:39,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:42,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:44,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:46,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:27,983 WARN L222 SmtUtils]: Spent 33.82s on a formula simplification. DAG size of input: 190 DAG size of output: 172 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:15:31,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:34,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:36,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:38,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:41,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:43,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:44,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:45,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:10,447 WARN L222 SmtUtils]: Spent 18.20s on a formula simplification. DAG size of input: 166 DAG size of output: 147 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:16:13,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:15,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:16,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:19,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:21,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:24,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:26,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:52,974 WARN L222 SmtUtils]: Spent 18.03s on a formula simplification. DAG size of input: 144 DAG size of output: 126 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:16:56,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:58,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:17:00,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:17:03,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:17:09,584 WARN L222 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 65 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:17:11,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:17:34,629 WARN L222 SmtUtils]: Spent 12.07s on a formula simplification. DAG size of input: 122 DAG size of output: 104 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:17:39,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:17:41,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:17:59,837 WARN L222 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 101 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:18:02,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:18:17,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:18:21,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:18:23,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:18:43,824 INFO L130 PetriNetUnfolder]: 134545/211865 cut-off events. [2023-08-29 22:18:43,824 INFO L131 PetriNetUnfolder]: For 10877/10877 co-relation queries the response was YES. [2023-08-29 22:18:44,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432408 conditions, 211865 events. 134545/211865 cut-off events. For 10877/10877 co-relation queries the response was YES. Maximal size of possible extension queue 4849. Compared 1873526 event pairs, 99228 based on Foata normal form. 17/104361 useless extension candidates. Maximal degree in co-relation 432388. Up to 39412 conditions per place. [2023-08-29 22:18:45,177 INFO L137 encePairwiseOnDemand]: 499/506 looper letters, 672 selfloop transitions, 38 changer transitions 0/718 dead transitions. [2023-08-29 22:18:45,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 718 transitions, 3434 flow [2023-08-29 22:18:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-29 22:18:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-29 22:18:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5250 transitions. [2023-08-29 22:18:45,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705533596837945 [2023-08-29 22:18:45,191 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5250 transitions. [2023-08-29 22:18:45,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5250 transitions. [2023-08-29 22:18:45,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:45,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5250 transitions. [2023-08-29 22:18:45,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 187.5) internal successors, (5250), 28 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:45,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 506.0) internal successors, (14674), 29 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:45,222 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 506.0) internal successors, (14674), 29 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:45,223 INFO L175 Difference]: Start difference. First operand has 121 places, 112 transitions, 363 flow. Second operand 28 states and 5250 transitions. [2023-08-29 22:18:45,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 718 transitions, 3434 flow [2023-08-29 22:18:45,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 718 transitions, 3366 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-08-29 22:18:45,314 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 674 flow [2023-08-29 22:18:45,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=674, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2023-08-29 22:18:45,315 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 58 predicate places. [2023-08-29 22:18:45,315 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 674 flow [2023-08-29 22:18:45,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 163.02857142857144) internal successors, (5706), 35 states have internal predecessors, (5706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:45,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:45,317 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:45,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 22:18:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:18:45,537 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:18:45,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1882956715, now seen corresponding path program 1 times [2023-08-29 22:18:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:45,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42124042] [2023-08-29 22:18:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:45,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 22:18:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42124042] [2023-08-29 22:18:46,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42124042] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:18:46,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399684524] [2023-08-29 22:18:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:46,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:18:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:18:46,082 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) [2023-08-29 22:18:46,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 22:18:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:46,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:18:46,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:18:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 22:18:46,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:18:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 22:18:46,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399684524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:18:46,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:18:46,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-08-29 22:18:46,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345070465] [2023-08-29 22:18:46,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:18:46,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-29 22:18:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-29 22:18:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-08-29 22:18:46,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 506 [2023-08-29 22:18:46,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 674 flow. Second operand has 27 states, 27 states have (on average 247.1851851851852) internal successors, (6674), 27 states have internal predecessors, (6674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:46,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:46,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 506 [2023-08-29 22:18:46,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:48,957 INFO L130 PetriNetUnfolder]: 14316/24336 cut-off events. [2023-08-29 22:18:48,957 INFO L131 PetriNetUnfolder]: For 3620/3620 co-relation queries the response was YES. [2023-08-29 22:18:49,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48833 conditions, 24336 events. 14316/24336 cut-off events. For 3620/3620 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 182946 event pairs, 13221 based on Foata normal form. 13/13750 useless extension candidates. Maximal degree in co-relation 48801. Up to 21922 conditions per place. [2023-08-29 22:18:49,076 INFO L137 encePairwiseOnDemand]: 502/506 looper letters, 78 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2023-08-29 22:18:49,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 124 transitions, 778 flow [2023-08-29 22:18:49,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-29 22:18:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-29 22:18:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6511 transitions. [2023-08-29 22:18:49,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49490726664639706 [2023-08-29 22:18:49,089 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6511 transitions. [2023-08-29 22:18:49,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6511 transitions. [2023-08-29 22:18:49,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:49,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6511 transitions. [2023-08-29 22:18:49,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 250.42307692307693) internal successors, (6511), 26 states have internal predecessors, (6511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:49,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 506.0) internal successors, (13662), 27 states have internal predecessors, (13662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:49,119 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 506.0) internal successors, (13662), 27 states have internal predecessors, (13662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:49,120 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 674 flow. Second operand 26 states and 6511 transitions. [2023-08-29 22:18:49,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 124 transitions, 778 flow [2023-08-29 22:18:49,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 124 transitions, 607 flow, removed 68 selfloop flow, removed 16 redundant places. [2023-08-29 22:18:49,134 INFO L231 Difference]: Finished difference. Result has 173 places, 123 transitions, 478 flow [2023-08-29 22:18:49,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=506, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=478, PETRI_PLACES=173, PETRI_TRANSITIONS=123} [2023-08-29 22:18:49,134 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 72 predicate places. [2023-08-29 22:18:49,135 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 123 transitions, 478 flow [2023-08-29 22:18:49,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 247.1851851851852) internal successors, (6674), 27 states have internal predecessors, (6674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:49,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:49,136 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1] [2023-08-29 22:18:49,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 22:18:49,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:18:49,343 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:18:49,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash 716771533, now seen corresponding path program 4 times [2023-08-29 22:18:49,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:49,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938366811] [2023-08-29 22:18:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:49,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:56,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938366811] [2023-08-29 22:18:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938366811] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:18:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151284456] [2023-08-29 22:18:56,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:18:56,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:18:56,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:18:56,953 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) [2023-08-29 22:18:56,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 22:18:57,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:18:57,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:18:57,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 219 conjunts are in the unsatisfiable core [2023-08-29 22:18:57,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:18:57,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:57,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:57,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:57,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:57,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:57,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:57,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:57,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:57,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:57,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:57,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:58,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:18:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:58,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:19:00,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:00,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2023-08-29 22:19:01,104 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:01,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2023-08-29 22:19:05,319 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:05,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 76 [2023-08-29 22:19:11,475 WARN L222 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:19:11,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:11,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 82 [2023-08-29 22:19:17,732 WARN L222 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:19:17,776 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:17,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 88 [2023-08-29 22:19:24,234 WARN L222 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 51 DAG size of output: 48 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:19:24,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:24,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 94 [2023-08-29 22:19:27,054 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:27,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 100 [2023-08-29 22:19:35,348 WARN L222 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:19:35,433 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:35,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 106 [2023-08-29 22:19:41,182 WARN L222 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:19:41,292 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:41,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 165 treesize of output 205 [2023-08-29 22:19:50,901 WARN L222 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 111 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:19:50,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:50,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 118 [2023-08-29 22:19:59,923 WARN L222 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 71 DAG size of output: 68 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:19:59,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:59,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 124 [2023-08-29 22:20:08,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:08,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 241 [2023-08-29 22:20:18,015 WARN L222 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 130 DAG size of output: 76 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:20:18,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:18,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 136 [2023-08-29 22:20:26,064 WARN L222 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:20:26,157 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:26,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 142 [2023-08-29 22:20:33,405 WARN L222 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 87 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:20:33,509 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:33,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 148 [2023-08-29 22:20:34,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:34,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 154 [2023-08-29 22:20:38,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:38,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 160 [2023-08-29 22:20:50,267 WARN L222 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 99 DAG size of output: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:20:50,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:50,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 166 [2023-08-29 22:20:51,513 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:51,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 172 [2023-08-29 22:20:54,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:54,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 160 treesize of output 178 [2023-08-29 22:20:59,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:20:59,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 184 [2023-08-29 22:21:03,767 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-08-29 22:21:03,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 22:21:03,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:21:03,969 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Probably an infinite loop! at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtils.preprocessDualFiniteJunction(QuantifierPushUtils.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:323) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-08-29 22:21:03,972 INFO L158 Benchmark]: Toolchain (without parser) took 821761.46ms. Allocated memory was 69.2MB in the beginning and 12.8GB in the end (delta: 12.7GB). Free memory was 44.6MB in the beginning and 8.6GB in the end (delta: -8.6GB). Peak memory consumption was 5.8GB. Max. memory is 16.1GB. [2023-08-29 22:21:03,973 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 34.1MB in the beginning and 34.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:21:03,973 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.80ms. Allocated memory is still 69.2MB. Free memory was 44.4MB in the beginning and 41.4MB in the end (delta: 3.0MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2023-08-29 22:21:03,973 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.98ms. Allocated memory is still 69.2MB. Free memory was 41.4MB in the beginning and 38.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:21:03,973 INFO L158 Benchmark]: Boogie Preprocessor took 66.31ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 36.0MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 22:21:03,974 INFO L158 Benchmark]: RCFGBuilder took 731.03ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 35.7MB in the beginning and 41.6MB in the end (delta: -5.9MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2023-08-29 22:21:03,974 INFO L158 Benchmark]: TraceAbstraction took 820240.98ms. Allocated memory was 88.1MB in the beginning and 12.8GB in the end (delta: 12.7GB). Free memory was 40.8MB in the beginning and 8.6GB in the end (delta: -8.6GB). Peak memory consumption was 5.8GB. Max. memory is 16.1GB. [2023-08-29 22:21:03,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 34.1MB in the beginning and 34.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.80ms. Allocated memory is still 69.2MB. Free memory was 44.4MB in the beginning and 41.4MB in the end (delta: 3.0MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.98ms. Allocated memory is still 69.2MB. Free memory was 41.4MB in the beginning and 38.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.31ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 36.0MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 731.03ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 35.7MB in the beginning and 41.6MB in the end (delta: -5.9MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 820240.98ms. Allocated memory was 88.1MB in the beginning and 12.8GB in the end (delta: 12.7GB). Free memory was 40.8MB in the beginning and 8.6GB in the end (delta: -8.6GB). Peak memory consumption was 5.8GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.7s, 255 PlacesBefore, 101 PlacesAfterwards, 275 TransitionsBefore, 114 TransitionsAfterwards, 24910 CoEnabledTransitionPairs, 6 FixpointIterations, 63 TrivialSequentialCompositions, 139 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 231 TotalNumberOfCompositions, 64329 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 33045, independent: 32399, independent conditional: 0, independent unconditional: 32399, dependent: 646, dependent conditional: 0, dependent unconditional: 646, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12378, independent: 12232, independent conditional: 0, independent unconditional: 12232, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 33045, independent: 20167, independent conditional: 0, independent unconditional: 20167, dependent: 500, dependent conditional: 0, dependent unconditional: 500, unknown: 12378, unknown conditional: 0, unknown unconditional: 12378] , Statistics on independence cache: Total cache size (in pairs): 1713, Positive cache size: 1645, Positive conditional cache size: 0, Positive unconditional cache size: 1645, Negative cache size: 68, Negative conditional cache size: 0, Negative unconditional cache size: 68, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: Probably an infinite loop! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Probably an infinite loop!: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtils.preprocessDualFiniteJunction(QuantifierPushUtils.java:124) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-08-29 22:21:04,187 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-29 22:21:04,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/goblint-regression/28-race_reach_87-lists_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:21:06,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:21:06,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:21:06,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:21:06,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:21:06,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:21:06,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:21:06,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:21:06,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:21:06,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:21:06,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:21:06,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:21:06,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:21:06,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:21:06,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:21:06,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:21:06,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:21:06,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:21:06,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:21:06,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:21:06,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:21:06,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:21:06,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:21:06,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:21:06,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:21:06,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:21:06,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:21:06,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:21:06,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:21:06,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:21:06,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:21:06,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:21:06,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:21:06,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:21:06,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:21:06,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:21:06,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:21:06,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:21:06,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:21:06,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:21:06,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:21:06,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 22:21:06,771 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:21:06,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:21:06,772 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:21:06,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:21:06,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:21:06,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:21:06,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:21:06,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:21:06,774 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:21:06,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:21:06,775 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:21:06,776 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:21:06,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:21:06,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:21:06,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:21:06,776 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:21:06,777 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:21:06,777 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:21:06,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:21:06,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:21:06,777 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 22:21:06,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 22:21:06,778 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:21:06,778 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:21:06,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:21:06,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:21:06,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:21:06,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:21:06,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:21:06,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:21:06,779 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 22:21:06,779 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 22:21:06,780 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:21:06,780 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:21:06,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:21:06,780 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 22:21:06,780 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:21:06,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:21:07,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:21:07,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:21:07,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:21:07,090 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:21:07,091 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:21:07,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-29 22:21:08,308 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:21:08,523 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:21:08,524 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-29 22:21:08,548 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1954c1142/cf08560cec9247dda2a671b851eabbd7/FLAG130364016 [2023-08-29 22:21:08,560 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1954c1142/cf08560cec9247dda2a671b851eabbd7 [2023-08-29 22:21:08,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:21:08,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:21:08,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:21:08,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:21:08,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:21:08,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:21:08" (1/1) ... [2023-08-29 22:21:08,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79df2fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:08, skipping insertion in model container [2023-08-29 22:21:08,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:21:08" (1/1) ... [2023-08-29 22:21:08,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:21:08,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:21:09,063 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-29 22:21:09,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:21:09,210 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:21:09,243 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-08-29 22:21:09,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:21:09,335 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:21:09,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09 WrapperNode [2023-08-29 22:21:09,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:21:09,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:21:09,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:21:09,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:21:09,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,420 INFO L138 Inliner]: procedures = 282, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 225 [2023-08-29 22:21:09,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:21:09,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:21:09,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:21:09,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:21:09,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,476 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:21:09,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:21:09,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:21:09,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:21:09,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (1/1) ... [2023-08-29 22:21:09,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:21:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:21:09,524 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) [2023-08-29 22:21:09,536 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 [2023-08-29 22:21:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 22:21:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:21:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 22:21:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 22:21:09,568 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 22:21:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:21:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 22:21:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 22:21:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 22:21:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 22:21:09,569 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 22:21:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 22:21:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 22:21:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:21:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 22:21:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:21:09,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:21:09,588 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:21:09,782 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:21:09,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:21:10,414 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:21:10,423 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:21:10,423 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 22:21:10,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:21:10 BoogieIcfgContainer [2023-08-29 22:21:10,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:21:10,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:21:10,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:21:10,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:21:10,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:21:08" (1/3) ... [2023-08-29 22:21:10,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c74337e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:21:10, skipping insertion in model container [2023-08-29 22:21:10,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:09" (2/3) ... [2023-08-29 22:21:10,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c74337e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:21:10, skipping insertion in model container [2023-08-29 22:21:10,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:21:10" (3/3) ... [2023-08-29 22:21:10,433 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-08-29 22:21:10,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:21:10,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-08-29 22:21:10,449 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:21:10,609 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 22:21:10,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 272 transitions, 566 flow [2023-08-29 22:21:10,830 INFO L130 PetriNetUnfolder]: 54/512 cut-off events. [2023-08-29 22:21:10,830 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 22:21:10,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 512 events. 54/512 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2369 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 260. Up to 8 conditions per place. [2023-08-29 22:21:10,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 272 transitions, 566 flow [2023-08-29 22:21:10,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 272 transitions, 566 flow [2023-08-29 22:21:10,858 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:21:10,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 272 transitions, 566 flow [2023-08-29 22:21:10,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 272 transitions, 566 flow [2023-08-29 22:21:10,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 272 transitions, 566 flow [2023-08-29 22:21:10,943 INFO L130 PetriNetUnfolder]: 54/512 cut-off events. [2023-08-29 22:21:10,944 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 22:21:10,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 512 events. 54/512 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2369 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 260. Up to 8 conditions per place. [2023-08-29 22:21:10,962 INFO L119 LiptonReduction]: Number of co-enabled transitions 24032 Killed by 15