./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.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_86-lists_racing.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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --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 22:06:49,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:06:49,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:06:50,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:06:50,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:06:50,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:06:50,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:06:50,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:06:50,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:06:50,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:06:50,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:06:50,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:06:50,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:06:50,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:06:50,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:06:50,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:06:50,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:06:50,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:06:50,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:06:50,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:06:50,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:06:50,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:06:50,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:06:50,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:06:50,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:06:50,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:06:50,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:06:50,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:06:50,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:06:50,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:06:50,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:06:50,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:06:50,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:06:50,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:06:50,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:06:50,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:06:50,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:06:50,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:06:50,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:06:50,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:06:50,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:06:50,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:06:50,127 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:06:50,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:06:50,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:06:50,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:06:50,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:06:50,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:06:50,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:06:50,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:06:50,130 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:06:50,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:06:50,131 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:06:50,132 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:06:50,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:06:50,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:06:50,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:06:50,132 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:06:50,133 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:06:50,133 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:06:50,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:06:50,133 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:06:50,133 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:06:50,133 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:06:50,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:06:50,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:06:50,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:06:50,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:06:50,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:06:50,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:06:50,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:06:50,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:06:50,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:06:50,135 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:06:50,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:06:50,136 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:06:50,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:06:50,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:06:50,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:06:50,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:06:50,483 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:06:50,484 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:06:50,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-29 22:06:51,617 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:06:51,898 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:06:51,904 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-29 22:06:51,932 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b01302624/72a17b5466f947f8b53f5e5dd06a528d/FLAGae46bc5ce [2023-08-29 22:06:51,944 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b01302624/72a17b5466f947f8b53f5e5dd06a528d [2023-08-29 22:06:51,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:06:51,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:06:51,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:06:51,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:06:51,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:06:51,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:06:51" (1/1) ... [2023-08-29 22:06:51,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dca1a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:51, skipping insertion in model container [2023-08-29 22:06:51,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:06:51" (1/1) ... [2023-08-29 22:06:51,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:06:52,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:06:52,366 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_86-lists_racing.i[47038,47051] [2023-08-29 22:06:52,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:06:52,490 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:06:52,552 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_86-lists_racing.i[47038,47051] [2023-08-29 22:06:52,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:06:52,636 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:06:52,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52 WrapperNode [2023-08-29 22:06:52,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:06:52,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:06:52,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:06:52,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:06:52,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,710 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 232 [2023-08-29 22:06:52,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:06:52,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:06:52,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:06:52,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:06:52,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,744 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:06:52,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:06:52,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:06:52,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:06:52,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (1/1) ... [2023-08-29 22:06:52,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:06:52,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:06:52,796 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 22:06:52,802 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 22:06:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:06:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 22:06:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 22:06:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 22:06:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:06:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 22:06:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 22:06:52,823 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 22:06:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:06:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 22:06:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 22:06:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:06:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 22:06:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:06:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:06:52,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:06:52,825 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 22:06:53,039 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:06:53,041 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:06:53,528 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:06:53,539 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:06:53,540 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 22:06:53,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:06:53 BoogieIcfgContainer [2023-08-29 22:06:53,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:06:53,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:06:53,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:06:53,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:06:53,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:06:51" (1/3) ... [2023-08-29 22:06:53,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339b521f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:06:53, skipping insertion in model container [2023-08-29 22:06:53,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:06:52" (2/3) ... [2023-08-29 22:06:53,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339b521f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:06:53, skipping insertion in model container [2023-08-29 22:06:53,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:06:53" (3/3) ... [2023-08-29 22:06:53,551 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-08-29 22:06:53,567 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:06:53,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-08-29 22:06:53,567 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:06:53,710 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 22:06:53,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 279 transitions, 580 flow [2023-08-29 22:06:53,958 INFO L130 PetriNetUnfolder]: 54/526 cut-off events. [2023-08-29 22:06:53,958 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 22:06:53,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 526 events. 54/526 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2427 event pairs, 0 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 258. Up to 8 conditions per place. [2023-08-29 22:06:53,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 279 transitions, 580 flow [2023-08-29 22:06:53,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 279 transitions, 580 flow [2023-08-29 22:06:53,987 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:06:54,003 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 279 transitions, 580 flow [2023-08-29 22:06:54,007 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 279 transitions, 580 flow [2023-08-29 22:06:54,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 279 transitions, 580 flow [2023-08-29 22:06:54,071 INFO L130 PetriNetUnfolder]: 54/526 cut-off events. [2023-08-29 22:06:54,071 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 22:06:54,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 526 events. 54/526 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2427 event pairs, 0 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 258. Up to 8 conditions per place. [2023-08-29 22:06:54,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 25622 [2023-08-29 22:07:02,635 INFO L134 LiptonReduction]: Checked pairs total: 63228 [2023-08-29 22:07:02,635 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-08-29 22:07:02,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:07:02,654 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;@235703e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:07:02,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2023-08-29 22:07:02,657 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-29 22:07:02,657 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:07:02,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:02,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:07:02,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:02,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:02,662 INFO L85 PathProgramCache]: Analyzing trace with hash 35221, now seen corresponding path program 1 times [2023-08-29 22:07:02,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:02,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230737638] [2023-08-29 22:07:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:02,853 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 22:07:02,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:02,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230737638] [2023-08-29 22:07:02,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230737638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:07:02,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:07:02,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:07:02,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111957464] [2023-08-29 22:07:02,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:07:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:07:02,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:02,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:07:02,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:07:02,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 530 [2023-08-29 22:07:02,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 114 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 256.0) internal successors, (512), 2 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 22:07:02,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:02,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 530 [2023-08-29 22:07:02,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:05,764 INFO L130 PetriNetUnfolder]: 18691/32140 cut-off events. [2023-08-29 22:07:05,765 INFO L131 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2023-08-29 22:07:05,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60864 conditions, 32140 events. 18691/32140 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 256600 event pairs, 17940 based on Foata normal form. 1250/16708 useless extension candidates. Maximal degree in co-relation 58044. Up to 28580 conditions per place. [2023-08-29 22:07:05,947 INFO L137 encePairwiseOnDemand]: 515/530 looper letters, 81 selfloop transitions, 0 changer transitions 0/99 dead transitions. [2023-08-29 22:07:05,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 99 transitions, 382 flow [2023-08-29 22:07:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:07:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:07:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 606 transitions. [2023-08-29 22:07:05,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5716981132075472 [2023-08-29 22:07:05,970 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 606 transitions. [2023-08-29 22:07:05,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 606 transitions. [2023-08-29 22:07:05,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:05,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 606 transitions. [2023-08-29 22:07:05,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 303.0) internal successors, (606), 2 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 22:07:05,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 530.0) internal successors, (1590), 3 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 22:07:05,992 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 530.0) internal successors, (1590), 3 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 22:07:05,994 INFO L175 Difference]: Start difference. First operand has 101 places, 114 transitions, 250 flow. Second operand 2 states and 606 transitions. [2023-08-29 22:07:05,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 99 transitions, 382 flow [2023-08-29 22:07:06,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 99 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:07:06,013 INFO L231 Difference]: Finished difference. Result has 98 places, 99 transitions, 220 flow [2023-08-29 22:07:06,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, 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 22:07:06,018 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2023-08-29 22:07:06,019 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 99 transitions, 220 flow [2023-08-29 22:07:06,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 256.0) internal successors, (512), 2 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 22:07:06,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:06,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:07:06,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:07:06,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:06,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:06,025 INFO L85 PathProgramCache]: Analyzing trace with hash 35230, now seen corresponding path program 1 times [2023-08-29 22:07:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:06,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954443155] [2023-08-29 22:07:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:06,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:06,268 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 22:07:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954443155] [2023-08-29 22:07:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954443155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:07:06,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:07:06,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:07:06,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212934569] [2023-08-29 22:07:06,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:07:06,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:07:06,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:07:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:07:06,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 530 [2023-08-29 22:07:06,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 99 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:07:06,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:06,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 530 [2023-08-29 22:07:06,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:08,413 INFO L130 PetriNetUnfolder]: 17366/29233 cut-off events. [2023-08-29 22:07:08,413 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-29 22:07:08,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56097 conditions, 29233 events. 17366/29233 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 231557 event pairs, 11890 based on Foata normal form. 0/14374 useless extension candidates. Maximal degree in co-relation 56092. Up to 18802 conditions per place. [2023-08-29 22:07:08,560 INFO L137 encePairwiseOnDemand]: 525/530 looper letters, 122 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2023-08-29 22:07:08,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 142 transitions, 554 flow [2023-08-29 22:07:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:07:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:07:08,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2023-08-29 22:07:08,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5515723270440251 [2023-08-29 22:07:08,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2023-08-29 22:07:08,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2023-08-29 22:07:08,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:08,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2023-08-29 22:07:08,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states 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 22:07:08,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states 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 22:07:08,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states 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 22:07:08,572 INFO L175 Difference]: Start difference. First operand has 98 places, 99 transitions, 220 flow. Second operand 3 states and 877 transitions. [2023-08-29 22:07:08,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 142 transitions, 554 flow [2023-08-29 22:07:08,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 142 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:07:08,580 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 228 flow [2023-08-29 22:07:08,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, 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 22:07:08,581 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -1 predicate places. [2023-08-29 22:07:08,581 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 228 flow [2023-08-29 22:07:08,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:07:08,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:08,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:07:08,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:07:08,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:08,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:08,583 INFO L85 PathProgramCache]: Analyzing trace with hash 35231, now seen corresponding path program 1 times [2023-08-29 22:07:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:08,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869774619] [2023-08-29 22:07:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:08,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:08,673 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 22:07:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869774619] [2023-08-29 22:07:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869774619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:07:08,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:07:08,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:07:08,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316689545] [2023-08-29 22:07:08,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:07:08,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:07:08,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:08,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:07:08,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:07:08,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 530 [2023-08-29 22:07:08,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 228 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 22:07:08,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:08,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 530 [2023-08-29 22:07:08,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:10,306 INFO L130 PetriNetUnfolder]: 17456/30109 cut-off events. [2023-08-29 22:07:10,306 INFO L131 PetriNetUnfolder]: For 878/878 co-relation queries the response was YES. [2023-08-29 22:07:10,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58242 conditions, 30109 events. 17456/30109 cut-off events. For 878/878 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 240120 event pairs, 16735 based on Foata normal form. 0/15597 useless extension candidates. Maximal degree in co-relation 58235. Up to 26725 conditions per place. [2023-08-29 22:07:10,499 INFO L137 encePairwiseOnDemand]: 526/530 looper letters, 79 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-29 22:07:10,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 392 flow [2023-08-29 22:07:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:07:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:07:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 821 transitions. [2023-08-29 22:07:10,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163522012578616 [2023-08-29 22:07:10,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 821 transitions. [2023-08-29 22:07:10,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 821 transitions. [2023-08-29 22:07:10,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:10,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 821 transitions. [2023-08-29 22:07:10,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 22:07:10,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states 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 22:07:10,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states 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 22:07:10,509 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 228 flow. Second operand 3 states and 821 transitions. [2023-08-29 22:07:10,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 392 flow [2023-08-29 22:07:10,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 99 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:07:10,524 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 238 flow [2023-08-29 22:07:10,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, 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 22:07:10,525 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 0 predicate places. [2023-08-29 22:07:10,526 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 238 flow [2023-08-29 22:07:10,526 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 22:07:10,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:10,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:07:10,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 22:07:10,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:10,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1093168, now seen corresponding path program 1 times [2023-08-29 22:07:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:10,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611522823] [2023-08-29 22:07:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:10,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:10,789 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 22:07:10,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:10,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611522823] [2023-08-29 22:07:10,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611522823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:07:10,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400775736] [2023-08-29 22:07:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:10,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:07:10,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:07:10,794 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 22:07:10,832 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 22:07:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:10,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 22:07:10,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:07:11,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:07:11,132 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 22:07:11,152 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 22:07:11,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:07:15,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:07:15,298 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 22:07:21,385 WARN L222 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:07:21,387 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 22:07:21,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400775736] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:07:21,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:07:21,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-29 22:07:21,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936838439] [2023-08-29 22:07:21,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:07:21,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:07:21,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:07:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:07:22,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 530 [2023-08-29 22:07:22,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 243.125) internal successors, (1945), 8 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states 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 22:07:22,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:22,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 530 [2023-08-29 22:07:22,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:27,802 INFO L130 PetriNetUnfolder]: 42852/72873 cut-off events. [2023-08-29 22:07:27,802 INFO L131 PetriNetUnfolder]: For 644/644 co-relation queries the response was YES. [2023-08-29 22:07:27,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140418 conditions, 72873 events. 42852/72873 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 2463. Compared 652589 event pairs, 35276 based on Foata normal form. 0/34914 useless extension candidates. Maximal degree in co-relation 140410. Up to 27745 conditions per place. [2023-08-29 22:07:28,172 INFO L137 encePairwiseOnDemand]: 525/530 looper letters, 219 selfloop transitions, 7 changer transitions 0/244 dead transitions. [2023-08-29 22:07:28,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 244 transitions, 1028 flow [2023-08-29 22:07:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:07:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:07:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1682 transitions. [2023-08-29 22:07:28,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289308176100629 [2023-08-29 22:07:28,177 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1682 transitions. [2023-08-29 22:07:28,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1682 transitions. [2023-08-29 22:07:28,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:28,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1682 transitions. [2023-08-29 22:07:28,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.3333333333333) internal successors, (1682), 6 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states 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 22:07:28,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 530.0) internal successors, (3710), 7 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states 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 22:07:28,189 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 530.0) internal successors, (3710), 7 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states 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 22:07:28,189 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 238 flow. Second operand 6 states and 1682 transitions. [2023-08-29 22:07:28,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 244 transitions, 1028 flow [2023-08-29 22:07:28,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 244 transitions, 1024 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 22:07:28,200 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 286 flow [2023-08-29 22:07:28,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, 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 22:07:28,203 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 7 predicate places. [2023-08-29 22:07:28,203 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 286 flow [2023-08-29 22:07:28,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 243.125) internal successors, (1945), 8 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states 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 22:07:28,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:28,205 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-29 22:07:28,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 22:07:28,410 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 22:07:28,411 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:28,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:28,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1050564881, now seen corresponding path program 1 times [2023-08-29 22:07:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:28,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106379706] [2023-08-29 22:07:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:28,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:28,495 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 22:07:28,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:28,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106379706] [2023-08-29 22:07:28,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106379706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:07:28,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:07:28,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:07:28,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692876990] [2023-08-29 22:07:28,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:07:28,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:07:28,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:07:28,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:07:28,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 530 [2023-08-29 22:07:28,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 22:07:28,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:28,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 530 [2023-08-29 22:07:28,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:32,984 INFO L130 PetriNetUnfolder]: 39927/67851 cut-off events. [2023-08-29 22:07:32,985 INFO L131 PetriNetUnfolder]: For 2158/2158 co-relation queries the response was YES. [2023-08-29 22:07:33,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133507 conditions, 67851 events. 39927/67851 cut-off events. For 2158/2158 co-relation queries the response was YES. Maximal size of possible extension queue 2295. Compared 601418 event pairs, 32453 based on Foata normal form. 0/34604 useless extension candidates. Maximal degree in co-relation 133496. Up to 51942 conditions per place. [2023-08-29 22:07:33,318 INFO L137 encePairwiseOnDemand]: 526/530 looper letters, 124 selfloop transitions, 4 changer transitions 0/146 dead transitions. [2023-08-29 22:07:33,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 146 transitions, 626 flow [2023-08-29 22:07:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:07:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:07:33,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 862 transitions. [2023-08-29 22:07:33,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421383647798742 [2023-08-29 22:07:33,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 862 transitions. [2023-08-29 22:07:33,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 862 transitions. [2023-08-29 22:07:33,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:33,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 862 transitions. [2023-08-29 22:07:33,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 states 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 22:07:33,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states 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 22:07:33,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states 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 22:07:33,329 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 286 flow. Second operand 3 states and 862 transitions. [2023-08-29 22:07:33,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 146 transitions, 626 flow [2023-08-29 22:07:33,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 146 transitions, 620 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 22:07:33,336 INFO L231 Difference]: Finished difference. Result has 107 places, 102 transitions, 284 flow [2023-08-29 22:07:33,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, 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 22:07:33,340 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 6 predicate places. [2023-08-29 22:07:33,340 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 102 transitions, 284 flow [2023-08-29 22:07:33,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 22:07:33,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:33,341 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-29 22:07:33,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 22:07:33,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:33,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1050564882, now seen corresponding path program 1 times [2023-08-29 22:07:33,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:33,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243813456] [2023-08-29 22:07:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:33,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:33,422 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 22:07:33,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:33,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243813456] [2023-08-29 22:07:33,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243813456] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:07:33,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150335689] [2023-08-29 22:07:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:33,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:07:33,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:07:33,424 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 22:07:33,429 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 22:07:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:33,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 22:07:33,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:07:33,563 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 22:07:33,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:07:33,584 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 22:07:33,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150335689] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:07:33,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:07:33,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-29 22:07:33,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493183862] [2023-08-29 22:07:33,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:07:33,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 22:07:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 22:07:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-08-29 22:07:33,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 530 [2023-08-29 22:07:33,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 102 transitions, 284 flow. Second operand has 9 states, 9 states have (on average 251.22222222222223) internal successors, (2261), 9 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states 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 22:07:33,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:33,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 530 [2023-08-29 22:07:33,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:35,460 INFO L130 PetriNetUnfolder]: 16482/28442 cut-off events. [2023-08-29 22:07:35,460 INFO L131 PetriNetUnfolder]: For 1909/1909 co-relation queries the response was YES. [2023-08-29 22:07:35,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55641 conditions, 28442 events. 16482/28442 cut-off events. For 1909/1909 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 224738 event pairs, 15794 based on Foata normal form. 4/15009 useless extension candidates. Maximal degree in co-relation 55629. Up to 25239 conditions per place. [2023-08-29 22:07:35,607 INFO L137 encePairwiseOnDemand]: 526/530 looper letters, 78 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-29 22:07:35,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 472 flow [2023-08-29 22:07:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:07:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:07:35,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2090 transitions. [2023-08-29 22:07:35,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49292452830188677 [2023-08-29 22:07:35,614 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2090 transitions. [2023-08-29 22:07:35,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2090 transitions. [2023-08-29 22:07:35,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:35,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2090 transitions. [2023-08-29 22:07:35,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 261.25) internal successors, (2090), 8 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states 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 22:07:35,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 530.0) internal successors, (4770), 9 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states 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 22:07:35,626 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 530.0) internal successors, (4770), 9 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states 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 22:07:35,626 INFO L175 Difference]: Start difference. First operand has 107 places, 102 transitions, 284 flow. Second operand 8 states and 2090 transitions. [2023-08-29 22:07:35,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 472 flow [2023-08-29 22:07:35,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 458 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-29 22:07:35,634 INFO L231 Difference]: Finished difference. Result has 117 places, 103 transitions, 316 flow [2023-08-29 22:07:35,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, 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 22:07:35,637 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 16 predicate places. [2023-08-29 22:07:35,637 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 103 transitions, 316 flow [2023-08-29 22:07:35,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 251.22222222222223) internal successors, (2261), 9 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states 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 22:07:35,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:35,638 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-29 22:07:35,647 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 22:07:35,844 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 22:07:35,844 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:07:35,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1792170529, now seen corresponding path program 2 times [2023-08-29 22:07:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056349719] [2023-08-29 22:07:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:36,460 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 22:07:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056349719] [2023-08-29 22:07:36,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056349719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:07:36,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658653299] [2023-08-29 22:07:36,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:07:36,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:07:36,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:07:36,465 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 22:07:36,479 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 22:07:36,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:07:36,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:07:36,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-29 22:07:36,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:07:36,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:07:36,705 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 22:07:36,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:07:36,739 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 22:07:36,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:07:36,781 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 22:07:36,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:07:36,825 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 22:07:36,845 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 22:07:36,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:07:36,931 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:07:36,932 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 22:07:41,135 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:07:41,136 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 22:07:43,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:07:43,345 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 22:07:49,464 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 22:07:49,654 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:07:49,654 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 22:07:49,840 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 22:07:49,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658653299] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:07:49,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:07:49,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-29 22:07:49,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528161416] [2023-08-29 22:07:49,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:07:49,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-29 22:07:49,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:49,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-29 22:07:49,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-08-29 22:07:57,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 530 [2023-08-29 22:07:57,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 103 transitions, 316 flow. Second operand has 17 states, 17 states have (on average 237.05882352941177) internal successors, (4030), 17 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states 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 22:07:57,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:57,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 530 [2023-08-29 22:07:57,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:08:04,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:08:05,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:08:07,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:08:08,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:08:15,106 INFO L130 PetriNetUnfolder]: 40141/68133 cut-off events. [2023-08-29 22:08:15,106 INFO L131 PetriNetUnfolder]: For 874/874 co-relation queries the response was YES. [2023-08-29 22:08:15,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131595 conditions, 68133 events. 40141/68133 cut-off events. For 874/874 co-relation queries the response was YES. Maximal size of possible extension queue 2011. Compared 599543 event pairs, 24233 based on Foata normal form. 6/33931 useless extension candidates. Maximal degree in co-relation 131579. Up to 26277 conditions per place. [2023-08-29 22:08:15,386 INFO L137 encePairwiseOnDemand]: 525/530 looper letters, 253 selfloop transitions, 15 changer transitions 0/286 dead transitions. [2023-08-29 22:08:15,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 286 transitions, 1324 flow [2023-08-29 22:08:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 22:08:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 22:08:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3106 transitions. [2023-08-29 22:08:15,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48836477987421384 [2023-08-29 22:08:15,394 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3106 transitions. [2023-08-29 22:08:15,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3106 transitions. [2023-08-29 22:08:15,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:08:15,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3106 transitions. [2023-08-29 22:08:15,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 258.8333333333333) internal successors, (3106), 12 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states 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 22:08:15,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 530.0) internal successors, (6890), 13 states have internal predecessors, (6890), 0 states have call successors, (0), 0 states 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 22:08:15,410 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 530.0) internal successors, (6890), 13 states have internal predecessors, (6890), 0 states have call successors, (0), 0 states 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 22:08:15,410 INFO L175 Difference]: Start difference. First operand has 117 places, 103 transitions, 316 flow. Second operand 12 states and 3106 transitions. [2023-08-29 22:08:15,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 286 transitions, 1324 flow [2023-08-29 22:08:15,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 286 transitions, 1283 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-08-29 22:08:15,416 INFO L231 Difference]: Finished difference. Result has 124 places, 110 transitions, 364 flow [2023-08-29 22:08:15,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, 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=364, PETRI_PLACES=124, PETRI_TRANSITIONS=110} [2023-08-29 22:08:15,417 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 23 predicate places. [2023-08-29 22:08:15,417 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 110 transitions, 364 flow [2023-08-29 22:08:15,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 237.05882352941177) internal successors, (4030), 17 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states 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 22:08:15,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:08:15,419 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1] [2023-08-29 22:08:15,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 22:08:15,629 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 22:08:15,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:08:15,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:08:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash 187225298, now seen corresponding path program 2 times [2023-08-29 22:08:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:08:15,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378317075] [2023-08-29 22:08:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:08:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:08:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:08:15,783 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 22:08:15,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:08:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378317075] [2023-08-29 22:08:15,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378317075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:08:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835814100] [2023-08-29 22:08:15,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:08:15,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:08:15,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:08:15,789 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 22:08:15,793 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 22:08:15,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 22:08:15,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:08:15,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 22:08:15,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:08:15,939 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 22:08:15,950 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 22:08:15,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:08:15,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835814100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:08:15,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:08:15,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2023-08-29 22:08:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129185516] [2023-08-29 22:08:15,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:08:15,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:08:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:08:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:08:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:08:16,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 530 [2023-08-29 22:08:16,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 110 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:08:16,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:08:16,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 530 [2023-08-29 22:08:16,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:08:20,227 INFO L130 PetriNetUnfolder]: 39683/66838 cut-off events. [2023-08-29 22:08:20,227 INFO L131 PetriNetUnfolder]: For 2483/2483 co-relation queries the response was YES. [2023-08-29 22:08:20,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132112 conditions, 66838 events. 39683/66838 cut-off events. For 2483/2483 co-relation queries the response was YES. Maximal size of possible extension queue 1945. Compared 573924 event pairs, 35799 based on Foata normal form. 5/34927 useless extension candidates. Maximal degree in co-relation 132094. Up to 60246 conditions per place. [2023-08-29 22:08:20,531 INFO L137 encePairwiseOnDemand]: 525/530 looper letters, 92 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-08-29 22:08:20,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 113 transitions, 560 flow [2023-08-29 22:08:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:08:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:08:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2023-08-29 22:08:20,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520125786163522 [2023-08-29 22:08:20,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2023-08-29 22:08:20,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2023-08-29 22:08:20,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:08:20,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2023-08-29 22:08:20,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states 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 22:08:20,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states 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 22:08:20,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states 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 22:08:20,538 INFO L175 Difference]: Start difference. First operand has 124 places, 110 transitions, 364 flow. Second operand 3 states and 827 transitions. [2023-08-29 22:08:20,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 113 transitions, 560 flow [2023-08-29 22:08:20,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 113 transitions, 537 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-29 22:08:20,543 INFO L231 Difference]: Finished difference. Result has 121 places, 112 transitions, 366 flow [2023-08-29 22:08:20,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, PETRI_DIFFERENCE_MINUEND_FLOW=341, 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=366, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2023-08-29 22:08:20,544 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 20 predicate places. [2023-08-29 22:08:20,544 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 366 flow [2023-08-29 22:08:20,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:08:20,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:08:20,545 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-29 22:08:20,555 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 22:08:20,750 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 22:08:20,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:08:20,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:08:20,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1479338945, now seen corresponding path program 3 times [2023-08-29 22:08:20,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:08:20,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781584900] [2023-08-29 22:08:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:08:20,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:08:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:08:22,787 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 22:08:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:08:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781584900] [2023-08-29 22:08:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781584900] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:08:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151527605] [2023-08-29 22:08:22,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:08:22,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:08:22,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:08:22,788 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 22:08:22,790 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 22:08:33,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-29 22:08:33,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:08:33,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 118 conjunts are in the unsatisfiable core [2023-08-29 22:08:33,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:08:33,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:33,154 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 22:08:33,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:33,200 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 22:08:33,221 INFO L321 Elim1Store]: treesize reduction 24, result has 14.3 percent of original size [2023-08-29 22:08:33,222 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 2 case distinctions, treesize of input 17 treesize of output 16 [2023-08-29 22:08:33,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:33,270 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 22:08:33,353 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-29 22:08:33,353 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 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-29 22:08:33,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:33,415 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 22:08:33,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:33,449 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 22:08:33,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:33,490 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 22:08:33,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:33,527 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 22:08:33,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:33,564 INFO L321 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-08-29 22:08:33,565 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 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 22:08:33,612 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 22:08:33,635 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-08-29 22:08:33,635 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 17 treesize of output 34 [2023-08-29 22:08:33,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:08:33,820 INFO L321 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2023-08-29 22:08:33,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 56 [2023-08-29 22:08:33,832 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 22:08:33,832 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 22:08:33,871 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 22:08:33,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:08:37,974 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:08:37,974 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 22:08:38,058 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:08:38,059 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 41 treesize of output 40 [2023-08-29 22:08:38,396 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:08:38,396 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 22:08:40,560 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:08:40,560 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 22:08:41,071 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-29 22:08:41,072 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 22:08:45,393 INFO L321 Elim1Store]: treesize reduction 31, result has 36.7 percent of original size [2023-08-29 22:08:45,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 86 [2023-08-29 22:08:47,841 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 22:08:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151527605] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:08:47,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:08:47,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-08-29 22:08:47,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966411334] [2023-08-29 22:08:47,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:08:47,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-29 22:08:47,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:08:47,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-29 22:08:47,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=938, Unknown=3, NotChecked=0, Total=1190 [2023-08-29 22:08:49,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:08:53,222 WARN L539 Checker$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 22:08:55,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:08:58,829 WARN L539 Checker$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 22:09:00,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:02,828 WARN L539 Checker$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 22:09:05,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:07,624 WARN L539 Checker$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 22:09:10,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:12,996 WARN L539 Checker$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 22:09:15,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:19,554 WARN L539 Checker$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 22:09:21,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:24,428 WARN L539 Checker$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 22:09:26,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:28,543 WARN L539 Checker$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 22:09:30,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:35,474 WARN L539 Checker$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 22:09:37,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:40,055 WARN L539 Checker$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 22:09:42,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:44,255 WARN L539 Checker$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 22:09:46,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:48,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:50,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:53,147 WARN L539 Checker$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 22:09:55,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:09:57,391 WARN L539 Checker$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 22:09:59,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:01,613 WARN L539 Checker$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 22:10:04,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:06,780 WARN L539 Checker$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 22:10:08,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:10,421 WARN L539 Checker$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 22:10:12,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:13,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:16,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:18,261 WARN L539 Checker$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 22:10:20,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:22,605 WARN L539 Checker$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 22:10:23,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:25,948 WARN L539 Checker$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 22:10:28,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:32,685 WARN L539 Checker$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 22:10:34,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:38,070 WARN L539 Checker$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 22:10:40,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:42,419 WARN L539 Checker$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 22:10:44,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:46,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:49,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:51,459 WARN L539 Checker$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 22:10:53,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:10:56,239 WARN L539 Checker$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 22:10:58,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:00,829 WARN L539 Checker$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 22:11:03,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:05,324 WARN L539 Checker$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 22:11:07,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:09,608 WARN L539 Checker$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 22:11:11,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:13,955 WARN L539 Checker$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 22:11:17,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:19,201 WARN L539 Checker$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 22:11:21,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:23,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:26,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:28,436 WARN L539 Checker$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 22:11:30,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:33,626 WARN L539 Checker$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 22:11:35,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:38,484 WARN L539 Checker$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 22:11:40,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:11:42,759 WARN L539 Checker$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 22:11:42,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 530 [2023-08-29 22:11:42,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 366 flow. Second operand has 35 states, 35 states have (on average 175.02857142857144) internal successors, (6126), 35 states have internal predecessors, (6126), 0 states have call successors, (0), 0 states 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 22:11:42,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:11:42,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 530 [2023-08-29 22:11:42,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:11:52,460 WARN L222 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 260 DAG size of output: 246 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:12:04,243 WARN L222 SmtUtils]: Spent 9.32s on a formula simplification. DAG size of input: 230 DAG size of output: 218 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:12:06,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:08,879 WARN L539 Checker$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 22:12:10,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:13,291 WARN L539 Checker$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 22:12:15,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:17,317 WARN L539 Checker$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 22:12:19,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:21,434 WARN L539 Checker$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 22:12:28,631 WARN L222 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 76 DAG size of output: 75 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:12:42,320 WARN L222 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 193 DAG size of output: 183 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:12:45,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:47,264 WARN L539 Checker$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 22:12:49,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:12:51,753 WARN L539 Checker$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 22:12:53,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:06,967 WARN L222 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 102 DAG size of output: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:13:27,489 WARN L222 SmtUtils]: Spent 10.99s on a formula simplification. DAG size of input: 164 DAG size of output: 156 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:13:29,640 WARN L539 Checker$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 22:13:31,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:34,214 WARN L539 Checker$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 22:13:35,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:13:37,543 WARN L539 Checker$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 22:13:50,996 WARN L222 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 95 DAG size of output: 93 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:14:15,418 WARN L222 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 140 DAG size of output: 134 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:14:17,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:19,813 WARN L539 Checker$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 22:14:22,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:44,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:46,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:48,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:50,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:54,595 WARN L539 Checker$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 22:14:57,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:14:59,585 WARN L539 Checker$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 22:15:04,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:05,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:13,501 WARN L222 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 60 DAG size of output: 58 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:15:15,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:17,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:28,744 WARN L222 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 43 DAG size of output: 41 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:15:30,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:32,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:15:36,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-29 22:15:39,397 WARN L539 Checker$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 22:15:48,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:16:15,108 INFO L130 PetriNetUnfolder]: 128416/201908 cut-off events. [2023-08-29 22:16:15,108 INFO L131 PetriNetUnfolder]: For 11378/11378 co-relation queries the response was YES. [2023-08-29 22:16:15,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412638 conditions, 201908 events. 128416/201908 cut-off events. For 11378/11378 co-relation queries the response was YES. Maximal size of possible extension queue 4685. Compared 1764899 event pairs, 98931 based on Foata normal form. 17/98833 useless extension candidates. Maximal degree in co-relation 412618. Up to 39412 conditions per place. [2023-08-29 22:16:16,077 INFO L137 encePairwiseOnDemand]: 523/530 looper letters, 665 selfloop transitions, 43 changer transitions 0/716 dead transitions. [2023-08-29 22:16:16,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 716 transitions, 3465 flow [2023-08-29 22:16:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-29 22:16:16,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-29 22:16:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5583 transitions. [2023-08-29 22:16:16,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37621293800539085 [2023-08-29 22:16:16,085 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5583 transitions. [2023-08-29 22:16:16,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5583 transitions. [2023-08-29 22:16:16,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:16:16,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5583 transitions. [2023-08-29 22:16:16,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 199.39285714285714) internal successors, (5583), 28 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states 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 22:16:16,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 530.0) internal successors, (15370), 29 states have internal predecessors, (15370), 0 states have call successors, (0), 0 states 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 22:16:16,116 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 530.0) internal successors, (15370), 29 states have internal predecessors, (15370), 0 states have call successors, (0), 0 states 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 22:16:16,116 INFO L175 Difference]: Start difference. First operand has 121 places, 112 transitions, 366 flow. Second operand 28 states and 5583 transitions. [2023-08-29 22:16:16,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 716 transitions, 3465 flow [2023-08-29 22:16:16,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 716 transitions, 3375 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-08-29 22:16:16,171 INFO L231 Difference]: Finished difference. Result has 160 places, 139 transitions, 724 flow [2023-08-29 22:16:16,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, 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=724, PETRI_PLACES=160, PETRI_TRANSITIONS=139} [2023-08-29 22:16:16,172 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 59 predicate places. [2023-08-29 22:16:16,172 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 139 transitions, 724 flow [2023-08-29 22:16:16,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 175.02857142857144) internal successors, (6126), 35 states have internal predecessors, (6126), 0 states have call successors, (0), 0 states 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 22:16:16,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:16:16,174 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 1, 1, 1, 1, 1, 1] [2023-08-29 22:16:16,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 22:16:16,389 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 22:16:16,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:16:16,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:16:16,390 INFO L85 PathProgramCache]: Analyzing trace with hash 110153793, now seen corresponding path program 1 times [2023-08-29 22:16:16,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:16:16,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452162856] [2023-08-29 22:16:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:16:16,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:16:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:16:16,742 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 22:16:16,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:16:16,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452162856] [2023-08-29 22:16:16,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452162856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:16:16,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777863886] [2023-08-29 22:16:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:16:16,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:16:16,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:16:16,745 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 22:16:16,773 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 22:16:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:16:17,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:16:17,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:16:17,144 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 22:16:17,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:16:17,348 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 22:16:17,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777863886] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:16:17,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 22:16:17,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-08-29 22:16:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422519554] [2023-08-29 22:16:17,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 22:16:17,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-29 22:16:17,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:16:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-29 22:16:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-08-29 22:16:17,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 530 [2023-08-29 22:16:17,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 139 transitions, 724 flow. Second operand has 27 states, 27 states have (on average 251.1851851851852) internal successors, (6782), 27 states have internal predecessors, (6782), 0 states have call successors, (0), 0 states 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 22:16:17,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:16:17,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 530 [2023-08-29 22:16:17,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:16:20,095 INFO L130 PetriNetUnfolder]: 16330/27586 cut-off events. [2023-08-29 22:16:20,095 INFO L131 PetriNetUnfolder]: For 7378/7378 co-relation queries the response was YES. [2023-08-29 22:16:20,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56272 conditions, 27586 events. 16330/27586 cut-off events. For 7378/7378 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 209066 event pairs, 15163 based on Foata normal form. 13/14931 useless extension candidates. Maximal degree in co-relation 56239. Up to 24942 conditions per place. [2023-08-29 22:16:20,222 INFO L137 encePairwiseOnDemand]: 526/530 looper letters, 80 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2023-08-29 22:16:20,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 124 transitions, 790 flow [2023-08-29 22:16:20,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-29 22:16:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-29 22:16:20,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6617 transitions. [2023-08-29 22:16:20,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480188679245283 [2023-08-29 22:16:20,232 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6617 transitions. [2023-08-29 22:16:20,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6617 transitions. [2023-08-29 22:16:20,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:16:20,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6617 transitions. [2023-08-29 22:16:20,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 254.5) internal successors, (6617), 26 states have internal predecessors, (6617), 0 states have call successors, (0), 0 states 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 22:16:20,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 530.0) internal successors, (14310), 27 states have internal predecessors, (14310), 0 states have call successors, (0), 0 states 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 22:16:20,259 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 530.0) internal successors, (14310), 27 states have internal predecessors, (14310), 0 states have call successors, (0), 0 states 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 22:16:20,259 INFO L175 Difference]: Start difference. First operand has 160 places, 139 transitions, 724 flow. Second operand 26 states and 6617 transitions. [2023-08-29 22:16:20,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 124 transitions, 790 flow [2023-08-29 22:16:20,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 124 transitions, 609 flow, removed 72 selfloop flow, removed 18 redundant places. [2023-08-29 22:16:20,271 INFO L231 Difference]: Finished difference. Result has 172 places, 123 transitions, 476 flow [2023-08-29 22:16:20,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=139, 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=476, PETRI_PLACES=172, PETRI_TRANSITIONS=123} [2023-08-29 22:16:20,272 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 71 predicate places. [2023-08-29 22:16:20,272 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 123 transitions, 476 flow [2023-08-29 22:16:20,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 251.1851851851852) internal successors, (6782), 27 states have internal predecessors, (6782), 0 states have call successors, (0), 0 states 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 22:16:20,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:16:20,274 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1] [2023-08-29 22:16:20,285 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 22:16:20,481 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 22:16:20,481 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-08-29 22:16:20,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:16:20,482 INFO L85 PathProgramCache]: Analyzing trace with hash 798431487, now seen corresponding path program 4 times [2023-08-29 22:16:20,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:16:20,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199332890] [2023-08-29 22:16:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:16:20,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:16:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:16:26,326 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 22:16:26,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:16:26,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199332890] [2023-08-29 22:16:26,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199332890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 22:16:26,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826511623] [2023-08-29 22:16:26,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:16:26,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 22:16:26,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:16:26,327 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 22:16:26,329 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 22:16:26,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:16:26,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:16:26,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 215 conjunts are in the unsatisfiable core [2023-08-29 22:16:26,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:16:26,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:26,882 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 22:16:26,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:26,931 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 22:16:26,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:26,993 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 22:16:27,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,046 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 22:16:27,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,101 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 22:16:27,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,166 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 22:16:27,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,227 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 22:16:27,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,284 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 22:16:27,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,338 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 22:16:27,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,396 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 22:16:27,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,458 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 22:16:27,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,518 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 22:16:27,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,576 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 22:16:27,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,644 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 22:16:27,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,709 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 22:16:27,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,767 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 22:16:27,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,836 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 22:16:27,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,902 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 22:16:27,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:27,971 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 22:16:28,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:28,049 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 22:16:28,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:28,122 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 22:16:28,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:16:28,189 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 22:16:28,244 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 22:16:28,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:16:28,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:16:28,378 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 22:16:30,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:16:30,652 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 22:16:32,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:16:32,855 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 22:16:39,237 WARN L222 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 43 DAG size of output: 40 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:16:39,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:16:39,271 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 22:16:46,743 WARN L222 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:16:46,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:16:46,797 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 22:16:51,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:16:51,319 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 76 treesize of output 94 [2023-08-29 22:16:54,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:16:54,725 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 22:17:05,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:05,201 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 22:17:09,834 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:09,834 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 94 treesize of output 112 [2023-08-29 22:17:10,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:10,278 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 22:17:16,733 WARN L222 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:17:16,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:16,812 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 22:17:17,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:17,371 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 112 treesize of output 130 [2023-08-29 22:17:24,264 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:24,264 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 22:17:29,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:29,449 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 22:17:32,206 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:32,207 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 22:17:37,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:37,107 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 136 treesize of output 154 [2023-08-29 22:17:43,031 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:43,032 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 22:17:55,054 WARN L222 SmtUtils]: Spent 10.06s 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 22:17:55,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:17:55,195 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 22:18:09,560 WARN L222 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 103 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:18:09,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:18:09,711 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 22:18:12,987 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:18:12,987 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 22:18:23,017 WARN L222 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 111 DAG size of output: 108 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:18:23,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:18:23,196 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 22:18:28,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:18:28,884 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 172 treesize of output 190 [2023-08-29 22:18:33,099 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-08-29 22:18:33,108 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 22:18:33,300 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 22:18:33,301 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 22:18:33,304 INFO L158 Benchmark]: Toolchain (without parser) took 701357.47ms. Allocated memory was 88.1MB in the beginning and 10.2GB in the end (delta: 10.1GB). Free memory was 66.0MB in the beginning and 7.9GB in the end (delta: -7.8GB). Peak memory consumption was 3.6GB. Max. memory is 16.1GB. [2023-08-29 22:18:33,304 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:18:33,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.04ms. Allocated memory is still 88.1MB. Free memory was 66.0MB in the beginning and 50.3MB in the end (delta: 15.7MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2023-08-29 22:18:33,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.96ms. Allocated memory is still 88.1MB. Free memory was 50.3MB in the beginning and 47.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 22:18:33,305 INFO L158 Benchmark]: Boogie Preprocessor took 41.60ms. Allocated memory is still 88.1MB. Free memory was 47.4MB in the beginning and 44.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:18:33,305 INFO L158 Benchmark]: RCFGBuilder took 789.08ms. Allocated memory is still 88.1MB. Free memory was 44.8MB in the beginning and 43.4MB in the end (delta: 1.4MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2023-08-29 22:18:33,305 INFO L158 Benchmark]: TraceAbstraction took 699759.18ms. Allocated memory was 88.1MB in the beginning and 10.2GB in the end (delta: 10.1GB). Free memory was 42.5MB in the beginning and 7.9GB in the end (delta: -7.8GB). Peak memory consumption was 3.6GB. Max. memory is 16.1GB. [2023-08-29 22:18:33,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 689.04ms. Allocated memory is still 88.1MB. Free memory was 66.0MB in the beginning and 50.3MB in the end (delta: 15.7MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.96ms. Allocated memory is still 88.1MB. Free memory was 50.3MB in the beginning and 47.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.60ms. Allocated memory is still 88.1MB. Free memory was 47.4MB in the beginning and 44.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 789.08ms. Allocated memory is still 88.1MB. Free memory was 44.8MB in the beginning and 43.4MB in the end (delta: 1.4MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * TraceAbstraction took 699759.18ms. Allocated memory was 88.1MB in the beginning and 10.2GB in the end (delta: 10.1GB). Free memory was 42.5MB in the beginning and 7.9GB in the end (delta: -7.8GB). Peak memory consumption was 3.6GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.6s, 259 PlacesBefore, 101 PlacesAfterwards, 279 TransitionsBefore, 114 TransitionsAfterwards, 25622 CoEnabledTransitionPairs, 6 FixpointIterations, 65 TrivialSequentialCompositions, 158 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 251 TotalNumberOfCompositions, 63228 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31961, independent: 31344, independent conditional: 0, independent unconditional: 31344, dependent: 617, dependent conditional: 0, dependent unconditional: 617, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12457, independent: 12322, independent conditional: 0, independent unconditional: 12322, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31961, independent: 19022, independent conditional: 0, independent unconditional: 19022, dependent: 482, dependent conditional: 0, dependent unconditional: 482, unknown: 12457, unknown conditional: 0, unknown unconditional: 12457] , Statistics on independence cache: Total cache size (in pairs): 1523, Positive cache size: 1459, Positive conditional cache size: 0, Positive unconditional cache size: 1459, Negative cache size: 64, Negative conditional cache size: 0, Negative unconditional cache size: 64, 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 22:18:33,513 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 22:18:33,537 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_86-lists_racing.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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --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 22:18:35,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:18:35,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:18:35,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:18:35,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:18:35,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:18:35,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:18:35,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:18:35,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:18:35,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:18:35,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:18:35,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:18:35,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:18:35,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:18:35,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:18:35,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:18:35,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:18:35,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:18:35,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:18:35,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:18:35,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:18:35,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:18:35,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:18:35,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:18:35,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:18:35,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:18:35,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:18:35,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:18:35,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:18:35,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:18:35,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:18:35,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:18:35,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:18:35,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:18:35,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:18:35,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:18:35,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:18:35,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:18:35,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:18:35,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:18:35,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:18:35,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 22:18:35,894 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:18:35,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:18:35,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:18:35,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:18:35,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:18:35,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:18:35,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:18:35,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:18:35,897 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:18:35,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:18:35,898 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:18:35,899 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:18:35,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:18:35,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:18:35,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:18:35,899 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:18:35,900 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:18:35,900 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:18:35,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:18:35,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:18:35,900 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 22:18:35,901 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 22:18:35,901 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:18:35,901 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:18:35,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:18:35,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:18:35,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:18:35,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:18:35,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:18:35,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:18:35,902 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 22:18:35,902 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 22:18:35,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:18:35,903 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:18:35,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:18:35,903 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 22:18:35,904 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:18:35,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:18:36,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:18:36,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:18:36,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:18:36,229 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:18:36,229 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:18:36,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-29 22:18:37,455 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:18:37,799 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:18:37,799 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-29 22:18:37,822 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa56e2586/700b46dd37cb4c95821674b6a43d7794/FLAGafca3d371 [2023-08-29 22:18:37,839 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa56e2586/700b46dd37cb4c95821674b6a43d7794 [2023-08-29 22:18:37,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:18:37,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:18:37,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:18:37,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:18:37,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:18:37,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62477eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:37, skipping insertion in model container [2023-08-29 22:18:37,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:18:37" (1/1) ... [2023-08-29 22:18:37,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:18:37,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:18:38,286 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_86-lists_racing.i[47038,47051] [2023-08-29 22:18:38,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:18:38,446 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:18:38,492 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_86-lists_racing.i[47038,47051] [2023-08-29 22:18:38,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:18:38,581 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:18:38,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38 WrapperNode [2023-08-29 22:18:38,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:18:38,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:18:38,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:18:38,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:18:38,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,636 INFO L138 Inliner]: procedures = 282, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 228 [2023-08-29 22:18:38,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:18:38,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:18:38,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:18:38,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:18:38,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,675 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:18:38,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:18:38,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:18:38,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:18:38,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (1/1) ... [2023-08-29 22:18:38,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:18:38,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:18:38,714 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 22:18:38,729 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 22:18:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 22:18:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:18:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 22:18:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 22:18:38,754 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 22:18:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:18:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 22:18:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 22:18:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 22:18:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 22:18:38,755 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 22:18:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 22:18:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 22:18:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:18:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 22:18:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:18:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:18:38,757 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 22:18:38,994 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:18:38,997 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:18:39,614 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:18:39,620 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:18:39,621 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 22:18:39,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:39 BoogieIcfgContainer [2023-08-29 22:18:39,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:18:39,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:18:39,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:18:39,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:18:39,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:18:37" (1/3) ... [2023-08-29 22:18:39,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a365e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:18:39, skipping insertion in model container [2023-08-29 22:18:39,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:38" (2/3) ... [2023-08-29 22:18:39,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a365e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:18:39, skipping insertion in model container [2023-08-29 22:18:39,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:39" (3/3) ... [2023-08-29 22:18:39,629 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-08-29 22:18:39,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:18:39,644 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-08-29 22:18:39,644 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:18:39,755 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 22:18:39,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 275 transitions, 572 flow [2023-08-29 22:18:39,904 INFO L130 PetriNetUnfolder]: 54/518 cut-off events. [2023-08-29 22:18:39,904 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 22:18:39,932 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 2426 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-08-29 22:18:39,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 275 transitions, 572 flow [2023-08-29 22:18:39,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 275 transitions, 572 flow [2023-08-29 22:18:39,951 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:18:39,962 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 275 transitions, 572 flow [2023-08-29 22:18:39,964 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 275 transitions, 572 flow [2023-08-29 22:18:39,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 275 transitions, 572 flow [2023-08-29 22:18:40,055 INFO L130 PetriNetUnfolder]: 54/518 cut-off events. [2023-08-29 22:18:40,055 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 22:18:40,061 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 2426 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-08-29 22:18:40,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 24560 [2023-08-29 22:19:22,220 INFO L134 LiptonReduction]: Checked pairs total: 63932 [2023-08-29 22:19:22,221 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-08-29 22:19:22,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:19:22,238 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;@e9641ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:19:22,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2023-08-29 22:19:22,241 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-29 22:19:22,242 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:19:22,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:19:22,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:19:22,243 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 22:19:22,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:19:22,247 INFO L85 PathProgramCache]: Analyzing trace with hash 34298, now seen corresponding path program 1 times [2023-08-29 22:19:22,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:19:22,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102717989] [2023-08-29 22:19:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:19:22,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:19:22,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:19:22,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:19:22,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 22:19:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:19:22,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 22:19:22,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:19:22,386 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 22:19:22,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:19:22,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:19:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102717989] [2023-08-29 22:19:22,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102717989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:19:22,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:19:22,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:19:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991530279] [2023-08-29 22:19:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:19:22,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:19:22,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:19:22,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:19:22,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:19:22,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 513 [2023-08-29 22:19:22,420 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 22:19:22,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:19:22,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 513 [2023-08-29 22:19:22,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:19:25,247 INFO L130 PetriNetUnfolder]: 15447/27838 cut-off events. [2023-08-29 22:19:25,247 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-29 22:19:25,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51642 conditions, 27838 events. 15447/27838 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 232199 event pairs, 14776 based on Foata normal form. 870/14796 useless extension candidates. Maximal degree in co-relation 48952. Up to 23664 conditions per place. [2023-08-29 22:19:25,526 INFO L137 encePairwiseOnDemand]: 498/513 looper letters, 77 selfloop transitions, 0 changer transitions 0/99 dead transitions. [2023-08-29 22:19:25,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 99 transitions, 374 flow [2023-08-29 22:19:25,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:19:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:19:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 594 transitions. [2023-08-29 22:19:25,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2023-08-29 22:19:25,539 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 594 transitions. [2023-08-29 22:19:25,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 594 transitions. [2023-08-29 22:19:25,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:19:25,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 594 transitions. [2023-08-29 22:19:25,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 297.0) internal successors, (594), 2 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 22:19:25,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 513.0) internal successors, (1539), 3 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states 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 22:19:25,550 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 513.0) internal successors, (1539), 3 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states 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 22:19:25,552 INFO L175 Difference]: Start difference. First operand has 101 places, 114 transitions, 250 flow. Second operand 2 states and 594 transitions. [2023-08-29 22:19:25,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 99 transitions, 374 flow [2023-08-29 22:19:25,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 99 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:19:25,563 INFO L231 Difference]: Finished difference. Result has 98 places, 99 transitions, 220 flow [2023-08-29 22:19:25,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, 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 22:19:25,567 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2023-08-29 22:19:25,567 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 99 transitions, 220 flow [2023-08-29 22:19:25,568 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 22:19:25,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:19:25,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:19:25,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 22:19:25,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:19:25,779 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 22:19:25,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:19:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 34306, now seen corresponding path program 1 times [2023-08-29 22:19:25,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:19:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138044960] [2023-08-29 22:19:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:19:25,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:19:25,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:19:25,782 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:19:25,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 22:19:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:19:25,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 22:19:25,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:19:25,894 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 22:19:25,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:19:25,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:19:25,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138044960] [2023-08-29 22:19:25,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138044960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:19:25,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:19:25,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:19:25,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350390286] [2023-08-29 22:19:25,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:19:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:19:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:19:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:19:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:19:26,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 513 [2023-08-29 22:19:26,154 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 22:19:26,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:19:26,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 513 [2023-08-29 22:19:26,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:19:28,135 INFO L130 PetriNetUnfolder]: 14236/24855 cut-off events. [2023-08-29 22:19:28,135 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2023-08-29 22:19:28,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46952 conditions, 24855 events. 14236/24855 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 202152 event pairs, 9710 based on Foata normal form. 0/12863 useless extension candidates. Maximal degree in co-relation 46947. Up to 15418 conditions per place. [2023-08-29 22:19:28,265 INFO L137 encePairwiseOnDemand]: 508/513 looper letters, 114 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2023-08-29 22:19:28,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 138 transitions, 530 flow [2023-08-29 22:19:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:19:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:19:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2023-08-29 22:19:28,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568551007147499 [2023-08-29 22:19:28,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2023-08-29 22:19:28,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2023-08-29 22:19:28,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:19:28,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2023-08-29 22:19:28,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states 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 22:19:28,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 22:19:28,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 22:19:28,276 INFO L175 Difference]: Start difference. First operand has 98 places, 99 transitions, 220 flow. Second operand 3 states and 857 transitions. [2023-08-29 22:19:28,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 138 transitions, 530 flow [2023-08-29 22:19:28,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 138 transitions, 530 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:19:28,282 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 228 flow [2023-08-29 22:19:28,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, 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 22:19:28,283 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -1 predicate places. [2023-08-29 22:19:28,283 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 228 flow [2023-08-29 22:19:28,284 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 22:19:28,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:19:28,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:19:28,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-08-29 22:19:28,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:19:28,494 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 22:19:28,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:19:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash 34308, now seen corresponding path program 1 times [2023-08-29 22:19:28,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:19:28,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435302999] [2023-08-29 22:19:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:19:28,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:19:28,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:19:28,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:19:28,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 22:19:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:19:28,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 22:19:28,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:19:28,626 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 22:19:28,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:19:28,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:19:28,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435302999] [2023-08-29 22:19:28,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435302999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:19:28,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:19:28,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:19:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143853312] [2023-08-29 22:19:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:19:28,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:19:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:19:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:19:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:19:28,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 513 [2023-08-29 22:19:28,977 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 22:19:28,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:19:28,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 513 [2023-08-29 22:19:28,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:19:30,969 INFO L130 PetriNetUnfolder]: 14316/25888 cut-off events. [2023-08-29 22:19:30,969 INFO L131 PetriNetUnfolder]: For 742/742 co-relation queries the response was YES. [2023-08-29 22:19:31,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49054 conditions, 25888 events. 14316/25888 cut-off events. For 742/742 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 215103 event pairs, 13675 based on Foata normal form. 0/13950 useless extension candidates. Maximal degree in co-relation 49047. Up to 21965 conditions per place. [2023-08-29 22:19:31,113 INFO L137 encePairwiseOnDemand]: 509/513 looper letters, 75 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-29 22:19:31,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 384 flow [2023-08-29 22:19:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:19:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:19:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 805 transitions. [2023-08-29 22:19:31,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230669265756985 [2023-08-29 22:19:31,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 805 transitions. [2023-08-29 22:19:31,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 805 transitions. [2023-08-29 22:19:31,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:19:31,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 805 transitions. [2023-08-29 22:19:31,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 22:19:31,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 22:19:31,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 22:19:31,124 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 228 flow. Second operand 3 states and 805 transitions. [2023-08-29 22:19:31,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 384 flow [2023-08-29 22:19:31,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 99 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:19:31,136 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 238 flow [2023-08-29 22:19:31,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=513, 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 22:19:31,138 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 0 predicate places. [2023-08-29 22:19:31,138 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 238 flow [2023-08-29 22:19:31,138 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 22:19:31,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:19:31,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:19:31,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-29 22:19:31,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:19:31,348 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 22:19:31,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:19:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1064562, now seen corresponding path program 1 times [2023-08-29 22:19:31,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:19:31,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610569193] [2023-08-29 22:19:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:19:31,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:19:31,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:19:31,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:19:31,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 22:19:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:19:31,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 22:19:31,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:19:31,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:31,619 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 22:19:31,651 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 22:19:31,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:19:33,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 22:19:33,867 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 53 treesize of output 77 [2023-08-29 22:19:34,146 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 22:19:34,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:19:34,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610569193] [2023-08-29 22:19:34,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610569193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:19:34,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:19:34,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-29 22:19:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712581192] [2023-08-29 22:19:34,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:19:34,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:19:34,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:19:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:19:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:19:36,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:19:41,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:19:45,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:19:47,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:19:50,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:19:52,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:19:58,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:20:00,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:20:00,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 513 [2023-08-29 22:20:00,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states 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 22:20:00,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:20:00,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 513 [2023-08-29 22:20:00,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:20:15,298 WARN L222 SmtUtils]: Spent 14.18s on a formula simplification. DAG size of input: 44 DAG size of output: 38 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:20:20,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:20:23,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:20:24,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:20:27,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 22:20:29,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] Killed by 15