./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-2.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:22:02,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:22:02,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:22:02,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:22:02,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:22:02,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:22:02,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:22:02,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:22:02,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:22:02,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:22:02,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:22:02,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:22:02,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:22:02,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:22:02,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:22:02,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:22:02,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:22:02,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:22:02,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:22:02,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:22:02,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:22:02,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:22:02,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:22:02,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:22:02,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:22:02,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:22:02,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:22:02,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:22:02,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:22:02,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:22:02,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:22:02,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:22:02,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:22:02,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:22:02,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:22:02,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:22:02,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:22:02,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:22:02,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:22:02,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:22:02,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:22:02,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 02:22:02,953 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:22:02,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:22:02,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:22:02,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:22:02,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:22:02,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:22:02,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:22:02,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:22:02,956 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:22:02,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:22:02,956 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:22:02,957 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:22:02,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:22:02,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:22:02,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:22:02,957 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:22:02,957 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:22:02,957 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:22:02,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:22:02,958 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:22:02,958 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:22:02,958 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:22:02,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:22:02,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:22:02,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:22:02,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:22:02,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:22:02,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:22:02,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 02:22:02,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 02:22:02,959 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:22:02,960 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:22:02,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:22:02,960 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:22:02,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:22:03,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:22:03,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:22:03,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:22:03,238 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:22:03,238 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:22:03,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-30 02:22:04,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:22:04,352 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:22:04,352 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-30 02:22:04,368 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c75f61b/9f27a67a34d249e28b963d4902089d72/FLAG5345cf1d9 [2023-08-30 02:22:04,383 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c75f61b/9f27a67a34d249e28b963d4902089d72 [2023-08-30 02:22:04,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:22:04,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:22:04,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:22:04,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:22:04,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:22:04,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ad1e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04, skipping insertion in model container [2023-08-30 02:22:04,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:22:04,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:22:04,628 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-08-30 02:22:04,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:22:04,643 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:22:04,672 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-08-30 02:22:04,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:22:04,694 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:22:04,695 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:22:04,711 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:22:04,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04 WrapperNode [2023-08-30 02:22:04,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:22:04,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:22:04,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:22:04,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:22:04,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,775 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-30 02:22:04,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:22:04,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:22:04,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:22:04,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:22:04,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,808 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:22:04,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:22:04,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:22:04,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:22:04,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (1/1) ... [2023-08-30 02:22:04,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:22:04,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:04,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 02:22:04,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 02:22:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 02:22:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 02:22:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 02:22:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 02:22:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 02:22:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 02:22:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:22:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:22:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:22:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 02:22:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 02:22:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:22:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:22:04,923 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 02:22:05,032 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:22:05,033 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:22:05,196 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:22:05,201 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:22:05,216 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 02:22:05,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:22:05 BoogieIcfgContainer [2023-08-30 02:22:05,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:22:05,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:22:05,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:22:05,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:22:05,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:22:04" (1/3) ... [2023-08-30 02:22:05,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6f493d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:22:05, skipping insertion in model container [2023-08-30 02:22:05,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:04" (2/3) ... [2023-08-30 02:22:05,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6f493d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:22:05, skipping insertion in model container [2023-08-30 02:22:05,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:22:05" (3/3) ... [2023-08-30 02:22:05,224 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-08-30 02:22:05,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:22:05,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 02:22:05,251 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:22:05,310 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:22:05,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 158 flow [2023-08-30 02:22:05,400 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-30 02:22:05,401 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:22:05,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 02:22:05,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 158 flow [2023-08-30 02:22:05,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 150 flow [2023-08-30 02:22:05,411 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:22:05,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-30 02:22:05,429 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-30 02:22:05,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 150 flow [2023-08-30 02:22:05,450 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-30 02:22:05,450 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:22:05,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 02:22:05,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-30 02:22:07,525 INFO L134 LiptonReduction]: Checked pairs total: 1104 [2023-08-30 02:22:07,525 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-30 02:22:07,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:22:07,537 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;@49a5189, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:22:07,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 02:22:07,538 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 02:22:07,539 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:22:07,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:07,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:22:07,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:07,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash 294, now seen corresponding path program 1 times [2023-08-30 02:22:07,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:07,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033882121] [2023-08-30 02:22:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033882121] [2023-08-30 02:22:07,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033882121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:07,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:07,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:22:07,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903005552] [2023-08-30 02:22:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:07,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:22:07,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:22:07,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:22:07,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 144 [2023-08-30 02:22:07,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:07,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:07,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 144 [2023-08-30 02:22:07,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:07,701 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2023-08-30 02:22:07,702 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:22:07,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-08-30 02:22:07,705 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-08-30 02:22:07,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-30 02:22:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:22:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:22:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2023-08-30 02:22:07,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-08-30 02:22:07,716 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 156 transitions. [2023-08-30 02:22:07,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 156 transitions. [2023-08-30 02:22:07,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:07,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 156 transitions. [2023-08-30 02:22:07,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:07,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:07,726 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:07,728 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 156 transitions. [2023-08-30 02:22:07,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-30 02:22:07,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:22:07,731 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-08-30 02:22:07,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-30 02:22:07,736 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-30 02:22:07,736 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-08-30 02:22:07,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:07,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:07,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:22:07,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 02:22:07,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:07,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash 286821, now seen corresponding path program 1 times [2023-08-30 02:22:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:07,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101533355] [2023-08-30 02:22:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:07,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:07,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:07,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101533355] [2023-08-30 02:22:07,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101533355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:07,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:07,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:22:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883329970] [2023-08-30 02:22:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:07,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:22:07,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:22:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:22:07,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2023-08-30 02:22:07,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:07,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:07,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2023-08-30 02:22:07,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:08,002 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2023-08-30 02:22:08,003 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:22:08,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 348 event pairs, 46 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 119 conditions per place. [2023-08-30 02:22:08,004 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-30 02:22:08,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-08-30 02:22:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:22:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:22:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-08-30 02:22:08,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-08-30 02:22:08,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-08-30 02:22:08,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-08-30 02:22:08,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:08,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-08-30 02:22:08,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,011 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 214 transitions. [2023-08-30 02:22:08,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-08-30 02:22:08,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:22:08,012 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-08-30 02:22:08,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-30 02:22:08,013 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-30 02:22:08,013 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-08-30 02:22:08,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:08,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:22:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 02:22:08,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:08,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 286820, now seen corresponding path program 1 times [2023-08-30 02:22:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:08,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958925885] [2023-08-30 02:22:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:08,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958925885] [2023-08-30 02:22:08,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958925885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:08,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:08,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:22:08,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993807819] [2023-08-30 02:22:08,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:08,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:22:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:08,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:22:08,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:22:08,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:08,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:08,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:08,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:08,137 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2023-08-30 02:22:08,138 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:22:08,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 325 event pairs, 32 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-08-30 02:22:08,141 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-30 02:22:08,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-08-30 02:22:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:22:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:22:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2023-08-30 02:22:08,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-30 02:22:08,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2023-08-30 02:22:08,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2023-08-30 02:22:08,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:08,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2023-08-30 02:22:08,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,149 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 204 transitions. [2023-08-30 02:22:08,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-08-30 02:22:08,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:22:08,159 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-30 02:22:08,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-30 02:22:08,161 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-08-30 02:22:08,163 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-30 02:22:08,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:08,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 02:22:08,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 02:22:08,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:08,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash -45115990, now seen corresponding path program 1 times [2023-08-30 02:22:08,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:08,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372273647] [2023-08-30 02:22:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:08,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:08,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:08,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372273647] [2023-08-30 02:22:08,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372273647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:08,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:08,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:22:08,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644270458] [2023-08-30 02:22:08,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:08,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:22:08,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:08,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:22:08,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:22:08,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:08,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:08,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:08,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:08,369 INFO L130 PetriNetUnfolder]: 124/197 cut-off events. [2023-08-30 02:22:08,369 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 02:22:08,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 197 events. 124/197 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 534 event pairs, 11 based on Foata normal form. 9/155 useless extension candidates. Maximal degree in co-relation 418. Up to 97 conditions per place. [2023-08-30 02:22:08,370 INFO L137 encePairwiseOnDemand]: 140/144 looper letters, 24 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2023-08-30 02:22:08,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 122 flow [2023-08-30 02:22:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 02:22:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 02:22:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-08-30 02:22:08,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809027777777778 [2023-08-30 02:22:08,373 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-08-30 02:22:08,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-08-30 02:22:08,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:08,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-08-30 02:22:08,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,377 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 4 states and 277 transitions. [2023-08-30 02:22:08,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 122 flow [2023-08-30 02:22:08,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:22:08,379 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 57 flow [2023-08-30 02:22:08,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-30 02:22:08,380 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-30 02:22:08,380 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 57 flow [2023-08-30 02:22:08,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:08,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:08,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 02:22:08,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:08,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1398595235, now seen corresponding path program 1 times [2023-08-30 02:22:08,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558092943] [2023-08-30 02:22:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:08,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:08,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:08,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558092943] [2023-08-30 02:22:08,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558092943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:08,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:08,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:22:08,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581187982] [2023-08-30 02:22:08,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:08,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:22:08,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:08,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:22:08,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:22:08,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 144 [2023-08-30 02:22:08,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:08,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 144 [2023-08-30 02:22:08,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:08,569 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2023-08-30 02:22:08,569 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 02:22:08,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 152 events. 94/152 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 382 event pairs, 35 based on Foata normal form. 15/148 useless extension candidates. Maximal degree in co-relation 373. Up to 107 conditions per place. [2023-08-30 02:22:08,570 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 14 selfloop transitions, 1 changer transitions 8/23 dead transitions. [2023-08-30 02:22:08,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 120 flow [2023-08-30 02:22:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 02:22:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 02:22:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2023-08-30 02:22:08,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 02:22:08,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 256 transitions. [2023-08-30 02:22:08,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 256 transitions. [2023-08-30 02:22:08,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:08,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 256 transitions. [2023-08-30 02:22:08,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,573 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 57 flow. Second operand 4 states and 256 transitions. [2023-08-30 02:22:08,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 120 flow [2023-08-30 02:22:08,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:22:08,574 INFO L231 Difference]: Finished difference. Result has 25 places, 15 transitions, 55 flow [2023-08-30 02:22:08,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2023-08-30 02:22:08,575 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-30 02:22:08,575 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 55 flow [2023-08-30 02:22:08,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:08,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:08,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 02:22:08,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:08,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash -407213147, now seen corresponding path program 1 times [2023-08-30 02:22:08,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:08,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982706152] [2023-08-30 02:22:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:08,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:08,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:08,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982706152] [2023-08-30 02:22:08,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982706152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:08,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:08,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:22:08,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678680291] [2023-08-30 02:22:08,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:08,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:22:08,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:22:08,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:22:08,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:08,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:08,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:08,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:08,702 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2023-08-30 02:22:08,702 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 02:22:08,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 217 events. 126/217 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 656 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 543. Up to 89 conditions per place. [2023-08-30 02:22:08,704 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-08-30 02:22:08,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 217 flow [2023-08-30 02:22:08,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 02:22:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 02:22:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 404 transitions. [2023-08-30 02:22:08,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2023-08-30 02:22:08,706 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 404 transitions. [2023-08-30 02:22:08,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 404 transitions. [2023-08-30 02:22:08,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:08,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 404 transitions. [2023-08-30 02:22:08,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,709 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,709 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 55 flow. Second operand 6 states and 404 transitions. [2023-08-30 02:22:08,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 217 flow [2023-08-30 02:22:08,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:22:08,711 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 135 flow [2023-08-30 02:22:08,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-30 02:22:08,713 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2023-08-30 02:22:08,713 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 135 flow [2023-08-30 02:22:08,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:08,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:08,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 02:22:08,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:08,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash -407195477, now seen corresponding path program 2 times [2023-08-30 02:22:08,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:08,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40893829] [2023-08-30 02:22:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:08,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:08,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:08,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40893829] [2023-08-30 02:22:08,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40893829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:08,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:08,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:22:08,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328282734] [2023-08-30 02:22:08,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:08,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:22:08,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:22:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:22:08,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:08,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:08,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:08,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:08,870 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2023-08-30 02:22:08,870 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2023-08-30 02:22:08,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 199 events. 114/199 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 617 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 645. Up to 84 conditions per place. [2023-08-30 02:22:08,871 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-08-30 02:22:08,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 285 flow [2023-08-30 02:22:08,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 02:22:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 02:22:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2023-08-30 02:22:08,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2023-08-30 02:22:08,872 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2023-08-30 02:22:08,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2023-08-30 02:22:08,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:08,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2023-08-30 02:22:08,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,874 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 135 flow. Second operand 5 states and 338 transitions. [2023-08-30 02:22:08,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 285 flow [2023-08-30 02:22:08,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 283 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 02:22:08,878 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 183 flow [2023-08-30 02:22:08,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-08-30 02:22:08,879 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-08-30 02:22:08,879 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 183 flow [2023-08-30 02:22:08,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:08,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 02:22:08,882 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:08,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1802673473, now seen corresponding path program 1 times [2023-08-30 02:22:08,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:08,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79397306] [2023-08-30 02:22:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:08,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79397306] [2023-08-30 02:22:08,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79397306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:08,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:08,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:22:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067874276] [2023-08-30 02:22:08,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:08,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:22:08,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:08,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:22:08,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:22:08,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:08,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:08,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:08,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:08,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:09,064 INFO L130 PetriNetUnfolder]: 136/239 cut-off events. [2023-08-30 02:22:09,065 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2023-08-30 02:22:09,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 239 events. 136/239 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 787 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 852. Up to 101 conditions per place. [2023-08-30 02:22:09,066 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2023-08-30 02:22:09,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 420 flow [2023-08-30 02:22:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:22:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:22:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 468 transitions. [2023-08-30 02:22:09,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-30 02:22:09,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 468 transitions. [2023-08-30 02:22:09,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 468 transitions. [2023-08-30 02:22:09,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:09,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 468 transitions. [2023-08-30 02:22:09,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,070 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,070 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 183 flow. Second operand 7 states and 468 transitions. [2023-08-30 02:22:09,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 420 flow [2023-08-30 02:22:09,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 380 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 02:22:09,073 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 270 flow [2023-08-30 02:22:09,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-08-30 02:22:09,074 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-08-30 02:22:09,074 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 270 flow [2023-08-30 02:22:09,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:09,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:09,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 02:22:09,074 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:09,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1802518163, now seen corresponding path program 2 times [2023-08-30 02:22:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:09,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055780523] [2023-08-30 02:22:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:09,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:09,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055780523] [2023-08-30 02:22:09,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055780523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:09,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:09,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:22:09,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814346013] [2023-08-30 02:22:09,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:09,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:22:09,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:09,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:22:09,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:22:09,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:09,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:09,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:09,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:09,222 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2023-08-30 02:22:09,222 INFO L131 PetriNetUnfolder]: For 778/778 co-relation queries the response was YES. [2023-08-30 02:22:09,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 303 events. 172/303 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1052 event pairs, 22 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1137. Up to 79 conditions per place. [2023-08-30 02:22:09,223 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2023-08-30 02:22:09,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 520 flow [2023-08-30 02:22:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 02:22:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 02:22:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 534 transitions. [2023-08-30 02:22:09,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2023-08-30 02:22:09,225 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 534 transitions. [2023-08-30 02:22:09,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 534 transitions. [2023-08-30 02:22:09,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:09,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 534 transitions. [2023-08-30 02:22:09,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.75) internal successors, (534), 8 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,228 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,228 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 270 flow. Second operand 8 states and 534 transitions. [2023-08-30 02:22:09,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 520 flow [2023-08-30 02:22:09,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 496 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 02:22:09,231 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 376 flow [2023-08-30 02:22:09,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=376, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-30 02:22:09,232 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 28 predicate places. [2023-08-30 02:22:09,232 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 376 flow [2023-08-30 02:22:09,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:09,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:09,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 02:22:09,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:09,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:09,233 INFO L85 PathProgramCache]: Analyzing trace with hash -105307223, now seen corresponding path program 3 times [2023-08-30 02:22:09,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:09,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376269538] [2023-08-30 02:22:09,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:09,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:09,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:09,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376269538] [2023-08-30 02:22:09,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376269538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:09,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:09,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:22:09,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499731340] [2023-08-30 02:22:09,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:09,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:22:09,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:09,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:22:09,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:22:09,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:09,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:09,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:09,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:09,436 INFO L130 PetriNetUnfolder]: 168/295 cut-off events. [2023-08-30 02:22:09,436 INFO L131 PetriNetUnfolder]: For 1372/1372 co-relation queries the response was YES. [2023-08-30 02:22:09,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 295 events. 168/295 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1031 event pairs, 18 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1310. Up to 71 conditions per place. [2023-08-30 02:22:09,438 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 28 selfloop transitions, 27 changer transitions 10/65 dead transitions. [2023-08-30 02:22:09,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 652 flow [2023-08-30 02:22:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 02:22:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 02:22:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 533 transitions. [2023-08-30 02:22:09,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626736111111111 [2023-08-30 02:22:09,440 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 533 transitions. [2023-08-30 02:22:09,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 533 transitions. [2023-08-30 02:22:09,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:09,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 533 transitions. [2023-08-30 02:22:09,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,444 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,444 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 376 flow. Second operand 8 states and 533 transitions. [2023-08-30 02:22:09,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 652 flow [2023-08-30 02:22:09,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 618 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 02:22:09,450 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 477 flow [2023-08-30 02:22:09,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-08-30 02:22:09,451 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-30 02:22:09,451 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 477 flow [2023-08-30 02:22:09,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:09,452 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:09,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 02:22:09,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:09,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:09,452 INFO L85 PathProgramCache]: Analyzing trace with hash -66003947, now seen corresponding path program 4 times [2023-08-30 02:22:09,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:09,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835086815] [2023-08-30 02:22:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:09,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:09,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:09,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835086815] [2023-08-30 02:22:09,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835086815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:09,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310862885] [2023-08-30 02:22:09,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:22:09,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:09,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:09,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:09,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 02:22:09,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:22:09,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:09,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 02:22:09,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:09,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310862885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:09,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:09,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 02:22:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747368179] [2023-08-30 02:22:09,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:09,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:22:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:22:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:22:09,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:09,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 477 flow. Second operand has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 12 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:09,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:09,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:09,922 INFO L130 PetriNetUnfolder]: 192/343 cut-off events. [2023-08-30 02:22:09,923 INFO L131 PetriNetUnfolder]: For 2696/2696 co-relation queries the response was YES. [2023-08-30 02:22:09,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 343 events. 192/343 cut-off events. For 2696/2696 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1204 event pairs, 41 based on Foata normal form. 24/367 useless extension candidates. Maximal degree in co-relation 1673. Up to 181 conditions per place. [2023-08-30 02:22:09,925 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 45 selfloop transitions, 19 changer transitions 19/83 dead transitions. [2023-08-30 02:22:09,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 917 flow [2023-08-30 02:22:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 02:22:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 02:22:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 797 transitions. [2023-08-30 02:22:09,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46122685185185186 [2023-08-30 02:22:09,927 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 797 transitions. [2023-08-30 02:22:09,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 797 transitions. [2023-08-30 02:22:09,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:09,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 797 transitions. [2023-08-30 02:22:09,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 66.41666666666667) internal successors, (797), 12 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,931 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,931 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 477 flow. Second operand 12 states and 797 transitions. [2023-08-30 02:22:09,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 917 flow [2023-08-30 02:22:09,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 862 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-30 02:22:09,937 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 587 flow [2023-08-30 02:22:09,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=587, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2023-08-30 02:22:09,938 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2023-08-30 02:22:09,938 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 587 flow [2023-08-30 02:22:09,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 12 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:09,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:09,939 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:09,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:10,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 02:22:10,147 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:10,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash -49023077, now seen corresponding path program 5 times [2023-08-30 02:22:10,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:10,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118803907] [2023-08-30 02:22:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:10,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:10,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:10,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118803907] [2023-08-30 02:22:10,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118803907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:10,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258643421] [2023-08-30 02:22:10,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:22:10,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:10,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:10,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:10,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 02:22:10,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:22:10,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:10,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 02:22:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:10,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258643421] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:10,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 02:22:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76462966] [2023-08-30 02:22:10,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 02:22:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 02:22:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-30 02:22:10,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:10,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 587 flow. Second operand has 13 states, 13 states have (on average 62.92307692307692) internal successors, (818), 13 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:10,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:10,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:10,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:10,708 INFO L130 PetriNetUnfolder]: 254/459 cut-off events. [2023-08-30 02:22:10,709 INFO L131 PetriNetUnfolder]: For 6978/6978 co-relation queries the response was YES. [2023-08-30 02:22:10,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 459 events. 254/459 cut-off events. For 6978/6978 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1793 event pairs, 30 based on Foata normal form. 28/487 useless extension candidates. Maximal degree in co-relation 2588. Up to 131 conditions per place. [2023-08-30 02:22:10,711 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 46 selfloop transitions, 44 changer transitions 29/119 dead transitions. [2023-08-30 02:22:10,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 1454 flow [2023-08-30 02:22:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 02:22:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 02:22:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1195 transitions. [2023-08-30 02:22:10,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46103395061728397 [2023-08-30 02:22:10,714 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1195 transitions. [2023-08-30 02:22:10,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1195 transitions. [2023-08-30 02:22:10,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:10,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1195 transitions. [2023-08-30 02:22:10,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.38888888888889) internal successors, (1195), 18 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:10,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:10,720 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:10,720 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 587 flow. Second operand 18 states and 1195 transitions. [2023-08-30 02:22:10,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 1454 flow [2023-08-30 02:22:10,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 119 transitions, 1311 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-08-30 02:22:10,729 INFO L231 Difference]: Finished difference. Result has 93 places, 66 transitions, 945 flow [2023-08-30 02:22:10,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=945, PETRI_PLACES=93, PETRI_TRANSITIONS=66} [2023-08-30 02:22:10,729 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 69 predicate places. [2023-08-30 02:22:10,729 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 66 transitions, 945 flow [2023-08-30 02:22:10,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.92307692307692) internal successors, (818), 13 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:10,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:10,730 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:10,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:10,939 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,SelfDestructingSolverStorable11 [2023-08-30 02:22:10,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:10,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1348112973, now seen corresponding path program 6 times [2023-08-30 02:22:10,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:10,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237489981] [2023-08-30 02:22:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:11,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237489981] [2023-08-30 02:22:11,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237489981] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320407408] [2023-08-30 02:22:11,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:22:11,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:11,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:11,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:11,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 02:22:11,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 02:22:11,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:11,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:22:11,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:11,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:11,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320407408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:11,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:11,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 02:22:11,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181433332] [2023-08-30 02:22:11,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:11,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 02:22:11,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 02:22:11,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-30 02:22:11,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:11,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 66 transitions, 945 flow. Second operand has 14 states, 14 states have (on average 62.714285714285715) internal successors, (878), 14 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:11,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:11,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:11,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:11,509 INFO L130 PetriNetUnfolder]: 338/619 cut-off events. [2023-08-30 02:22:11,518 INFO L131 PetriNetUnfolder]: For 15458/15458 co-relation queries the response was YES. [2023-08-30 02:22:11,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4528 conditions, 619 events. 338/619 cut-off events. For 15458/15458 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2619 event pairs, 27 based on Foata normal form. 24/643 useless extension candidates. Maximal degree in co-relation 4489. Up to 207 conditions per place. [2023-08-30 02:22:11,522 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 56 selfloop transitions, 60 changer transitions 19/135 dead transitions. [2023-08-30 02:22:11,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 135 transitions, 2184 flow [2023-08-30 02:22:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 02:22:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 02:22:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1190 transitions. [2023-08-30 02:22:11,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591049382716049 [2023-08-30 02:22:11,525 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1190 transitions. [2023-08-30 02:22:11,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1190 transitions. [2023-08-30 02:22:11,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:11,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1190 transitions. [2023-08-30 02:22:11,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.11111111111111) internal successors, (1190), 18 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:11,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:11,531 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:11,531 INFO L175 Difference]: Start difference. First operand has 93 places, 66 transitions, 945 flow. Second operand 18 states and 1190 transitions. [2023-08-30 02:22:11,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 135 transitions, 2184 flow [2023-08-30 02:22:11,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 135 transitions, 1904 flow, removed 130 selfloop flow, removed 4 redundant places. [2023-08-30 02:22:11,557 INFO L231 Difference]: Finished difference. Result has 114 places, 82 transitions, 1312 flow [2023-08-30 02:22:11,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1312, PETRI_PLACES=114, PETRI_TRANSITIONS=82} [2023-08-30 02:22:11,558 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2023-08-30 02:22:11,558 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 82 transitions, 1312 flow [2023-08-30 02:22:11,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 62.714285714285715) internal successors, (878), 14 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:11,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:11,558 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:11,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:11,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:11,763 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:11,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:11,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1879733603, now seen corresponding path program 7 times [2023-08-30 02:22:11,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:11,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040716580] [2023-08-30 02:22:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:11,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:11,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:11,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040716580] [2023-08-30 02:22:11,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040716580] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:11,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647419977] [2023-08-30 02:22:11,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:22:11,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:11,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:11,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:11,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 02:22:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:11,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:22:11,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:11,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:11,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647419977] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:11,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:11,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-30 02:22:11,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057316453] [2023-08-30 02:22:11,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:11,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 02:22:11,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:11,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 02:22:11,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-30 02:22:12,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:12,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 82 transitions, 1312 flow. Second operand has 15 states, 15 states have (on average 62.733333333333334) internal successors, (941), 15 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:12,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:12,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:12,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:12,415 INFO L130 PetriNetUnfolder]: 390/711 cut-off events. [2023-08-30 02:22:12,416 INFO L131 PetriNetUnfolder]: For 27719/27719 co-relation queries the response was YES. [2023-08-30 02:22:12,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 711 events. 390/711 cut-off events. For 27719/27719 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3084 event pairs, 12 based on Foata normal form. 24/735 useless extension candidates. Maximal degree in co-relation 5857. Up to 238 conditions per place. [2023-08-30 02:22:12,421 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 45 selfloop transitions, 84 changer transitions 36/165 dead transitions. [2023-08-30 02:22:12,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 165 transitions, 2974 flow [2023-08-30 02:22:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 02:22:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 02:22:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1392 transitions. [2023-08-30 02:22:12,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2023-08-30 02:22:12,424 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1392 transitions. [2023-08-30 02:22:12,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1392 transitions. [2023-08-30 02:22:12,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:12,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1392 transitions. [2023-08-30 02:22:12,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 66.28571428571429) internal successors, (1392), 21 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:12,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 144.0) internal successors, (3168), 22 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:12,430 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 144.0) internal successors, (3168), 22 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:12,430 INFO L175 Difference]: Start difference. First operand has 114 places, 82 transitions, 1312 flow. Second operand 21 states and 1392 transitions. [2023-08-30 02:22:12,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 165 transitions, 2974 flow [2023-08-30 02:22:12,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 165 transitions, 2402 flow, removed 246 selfloop flow, removed 12 redundant places. [2023-08-30 02:22:12,459 INFO L231 Difference]: Finished difference. Result has 132 places, 101 transitions, 1713 flow [2023-08-30 02:22:12,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1713, PETRI_PLACES=132, PETRI_TRANSITIONS=101} [2023-08-30 02:22:12,460 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 108 predicate places. [2023-08-30 02:22:12,460 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 101 transitions, 1713 flow [2023-08-30 02:22:12,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 62.733333333333334) internal successors, (941), 15 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:12,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:12,460 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:12,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:12,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:12,669 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:12,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:12,669 INFO L85 PathProgramCache]: Analyzing trace with hash 556885969, now seen corresponding path program 8 times [2023-08-30 02:22:12,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:12,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780543849] [2023-08-30 02:22:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:12,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:12,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780543849] [2023-08-30 02:22:12,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780543849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974755860] [2023-08-30 02:22:12,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:22:12,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:12,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:12,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 02:22:12,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:22:12,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:12,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 02:22:12,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:12,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:13,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974755860] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:13,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:13,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-30 02:22:13,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715922810] [2023-08-30 02:22:13,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:13,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 02:22:13,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:13,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 02:22:13,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-30 02:22:13,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:13,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 101 transitions, 1713 flow. Second operand has 22 states, 22 states have (on average 62.5) internal successors, (1375), 22 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:13,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:13,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:13,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:13,753 INFO L130 PetriNetUnfolder]: 538/959 cut-off events. [2023-08-30 02:22:13,754 INFO L131 PetriNetUnfolder]: For 43225/43225 co-relation queries the response was YES. [2023-08-30 02:22:13,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8739 conditions, 959 events. 538/959 cut-off events. For 43225/43225 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4101 event pairs, 15 based on Foata normal form. 36/995 useless extension candidates. Maximal degree in co-relation 8685. Up to 330 conditions per place. [2023-08-30 02:22:13,761 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-08-30 02:22:13,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 247 transitions, 4925 flow [2023-08-30 02:22:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-30 02:22:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-30 02:22:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2378 transitions. [2023-08-30 02:22:13,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45871913580246915 [2023-08-30 02:22:13,764 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2378 transitions. [2023-08-30 02:22:13,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2378 transitions. [2023-08-30 02:22:13,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:13,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2378 transitions. [2023-08-30 02:22:13,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 66.05555555555556) internal successors, (2378), 36 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:13,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 144.0) internal successors, (5328), 37 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:13,773 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 144.0) internal successors, (5328), 37 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:13,773 INFO L175 Difference]: Start difference. First operand has 132 places, 101 transitions, 1713 flow. Second operand 36 states and 2378 transitions. [2023-08-30 02:22:13,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 247 transitions, 4925 flow [2023-08-30 02:22:13,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 247 transitions, 4318 flow, removed 265 selfloop flow, removed 14 redundant places. [2023-08-30 02:22:13,849 INFO L231 Difference]: Finished difference. Result has 171 places, 138 transitions, 2758 flow [2023-08-30 02:22:13,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2758, PETRI_PLACES=171, PETRI_TRANSITIONS=138} [2023-08-30 02:22:13,849 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2023-08-30 02:22:13,850 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 138 transitions, 2758 flow [2023-08-30 02:22:13,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 62.5) internal successors, (1375), 22 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:13,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:13,850 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:13,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:14,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 02:22:14,055 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:14,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:14,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1563143313, now seen corresponding path program 9 times [2023-08-30 02:22:14,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:14,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939850279] [2023-08-30 02:22:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:14,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:14,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:14,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939850279] [2023-08-30 02:22:14,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939850279] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:14,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565064901] [2023-08-30 02:22:14,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:22:14,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:14,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:14,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:14,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 02:22:14,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 02:22:14,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:14,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 02:22:14,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:14,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:14,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565064901] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:14,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:14,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-30 02:22:14,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924707905] [2023-08-30 02:22:14,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:14,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 02:22:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 02:22:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 02:22:14,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:14,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 138 transitions, 2758 flow. Second operand has 34 states, 34 states have (on average 62.3235294117647) internal successors, (2119), 34 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:14,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:14,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:14,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:15,501 INFO L130 PetriNetUnfolder]: 674/1231 cut-off events. [2023-08-30 02:22:15,501 INFO L131 PetriNetUnfolder]: For 90395/90395 co-relation queries the response was YES. [2023-08-30 02:22:15,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13998 conditions, 1231 events. 674/1231 cut-off events. For 90395/90395 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5570 event pairs, 99 based on Foata normal form. 24/1255 useless extension candidates. Maximal degree in co-relation 13930. Up to 466 conditions per place. [2023-08-30 02:22:15,512 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 113 selfloop transitions, 100 changer transitions 71/284 dead transitions. [2023-08-30 02:22:15,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 284 transitions, 6989 flow [2023-08-30 02:22:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-30 02:22:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-30 02:22:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2489 transitions. [2023-08-30 02:22:15,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2023-08-30 02:22:15,517 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2489 transitions. [2023-08-30 02:22:15,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2489 transitions. [2023-08-30 02:22:15,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:15,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2489 transitions. [2023-08-30 02:22:15,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 65.5) internal successors, (2489), 38 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:15,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 144.0) internal successors, (5616), 39 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:15,545 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 144.0) internal successors, (5616), 39 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:15,545 INFO L175 Difference]: Start difference. First operand has 171 places, 138 transitions, 2758 flow. Second operand 38 states and 2489 transitions. [2023-08-30 02:22:15,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 284 transitions, 6989 flow [2023-08-30 02:22:15,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 284 transitions, 5398 flow, removed 763 selfloop flow, removed 13 redundant places. [2023-08-30 02:22:15,750 INFO L231 Difference]: Finished difference. Result has 203 places, 172 transitions, 3028 flow [2023-08-30 02:22:15,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3028, PETRI_PLACES=203, PETRI_TRANSITIONS=172} [2023-08-30 02:22:15,751 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 179 predicate places. [2023-08-30 02:22:15,751 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 172 transitions, 3028 flow [2023-08-30 02:22:15,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 62.3235294117647) internal successors, (2119), 34 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:15,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:15,752 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:15,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 02:22:15,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 02:22:15,957 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:15,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1097783361, now seen corresponding path program 10 times [2023-08-30 02:22:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:15,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590721577] [2023-08-30 02:22:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:15,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:16,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:16,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590721577] [2023-08-30 02:22:16,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590721577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:16,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073379849] [2023-08-30 02:22:16,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:22:16,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:16,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:16,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:16,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 02:22:16,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:22:16,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:16,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 02:22:16,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:16,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:16,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073379849] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:16,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:16,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-30 02:22:16,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202272209] [2023-08-30 02:22:16,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:16,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 02:22:16,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 02:22:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 02:22:16,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:16,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 172 transitions, 3028 flow. Second operand has 35 states, 35 states have (on average 62.34285714285714) internal successors, (2182), 35 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:16,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:16,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:17,689 INFO L130 PetriNetUnfolder]: 858/1595 cut-off events. [2023-08-30 02:22:17,689 INFO L131 PetriNetUnfolder]: For 148238/148238 co-relation queries the response was YES. [2023-08-30 02:22:17,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17910 conditions, 1595 events. 858/1595 cut-off events. For 148238/148238 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7838 event pairs, 42 based on Foata normal form. 32/1627 useless extension candidates. Maximal degree in co-relation 17838. Up to 646 conditions per place. [2023-08-30 02:22:17,706 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 88 selfloop transitions, 180 changer transitions 83/351 dead transitions. [2023-08-30 02:22:17,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 351 transitions, 7743 flow [2023-08-30 02:22:17,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-30 02:22:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-30 02:22:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2890 transitions. [2023-08-30 02:22:17,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45612373737373735 [2023-08-30 02:22:17,739 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2890 transitions. [2023-08-30 02:22:17,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2890 transitions. [2023-08-30 02:22:17,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:17,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2890 transitions. [2023-08-30 02:22:17,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 65.68181818181819) internal successors, (2890), 44 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:17,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 144.0) internal successors, (6480), 45 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:17,749 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 144.0) internal successors, (6480), 45 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:17,749 INFO L175 Difference]: Start difference. First operand has 203 places, 172 transitions, 3028 flow. Second operand 44 states and 2890 transitions. [2023-08-30 02:22:17,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 351 transitions, 7743 flow [2023-08-30 02:22:17,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 351 transitions, 7094 flow, removed 257 selfloop flow, removed 17 redundant places. [2023-08-30 02:22:17,943 INFO L231 Difference]: Finished difference. Result has 240 places, 221 transitions, 4323 flow [2023-08-30 02:22:17,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4323, PETRI_PLACES=240, PETRI_TRANSITIONS=221} [2023-08-30 02:22:17,944 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 216 predicate places. [2023-08-30 02:22:17,944 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 221 transitions, 4323 flow [2023-08-30 02:22:17,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 62.34285714285714) internal successors, (2182), 35 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:17,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:17,945 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:17,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 02:22:18,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:18,150 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:18,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:18,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1091144601, now seen corresponding path program 11 times [2023-08-30 02:22:18,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:18,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461147129] [2023-08-30 02:22:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:18,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:18,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461147129] [2023-08-30 02:22:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461147129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105718772] [2023-08-30 02:22:18,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:22:18,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:18,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:18,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:18,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 02:22:18,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-30 02:22:18,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:18,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 02:22:18,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:18,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:18,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105718772] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:18,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:18,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-30 02:22:18,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575935279] [2023-08-30 02:22:18,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:18,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 02:22:18,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 02:22:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 02:22:18,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:18,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 221 transitions, 4323 flow. Second operand has 35 states, 35 states have (on average 62.34285714285714) internal successors, (2182), 35 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:18,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:18,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:18,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:19,906 INFO L130 PetriNetUnfolder]: 1002/1859 cut-off events. [2023-08-30 02:22:19,906 INFO L131 PetriNetUnfolder]: For 242261/242261 co-relation queries the response was YES. [2023-08-30 02:22:19,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23308 conditions, 1859 events. 1002/1859 cut-off events. For 242261/242261 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9414 event pairs, 16 based on Foata normal form. 36/1895 useless extension candidates. Maximal degree in co-relation 23224. Up to 766 conditions per place. [2023-08-30 02:22:19,941 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 75 selfloop transitions, 233 changer transitions 81/389 dead transitions. [2023-08-30 02:22:19,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 389 transitions, 9369 flow [2023-08-30 02:22:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-30 02:22:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-30 02:22:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2897 transitions. [2023-08-30 02:22:19,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45722853535353536 [2023-08-30 02:22:19,944 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2897 transitions. [2023-08-30 02:22:19,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2897 transitions. [2023-08-30 02:22:19,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:19,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2897 transitions. [2023-08-30 02:22:19,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 65.8409090909091) internal successors, (2897), 44 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:19,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 144.0) internal successors, (6480), 45 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:19,956 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 144.0) internal successors, (6480), 45 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:19,956 INFO L175 Difference]: Start difference. First operand has 240 places, 221 transitions, 4323 flow. Second operand 44 states and 2897 transitions. [2023-08-30 02:22:19,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 389 transitions, 9369 flow [2023-08-30 02:22:20,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 389 transitions, 8453 flow, removed 368 selfloop flow, removed 18 redundant places. [2023-08-30 02:22:20,344 INFO L231 Difference]: Finished difference. Result has 279 places, 259 transitions, 5379 flow [2023-08-30 02:22:20,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5379, PETRI_PLACES=279, PETRI_TRANSITIONS=259} [2023-08-30 02:22:20,345 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 255 predicate places. [2023-08-30 02:22:20,345 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 259 transitions, 5379 flow [2023-08-30 02:22:20,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 62.34285714285714) internal successors, (2182), 35 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:20,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:20,345 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:20,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:20,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 02:22:20,546 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:20,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:20,547 INFO L85 PathProgramCache]: Analyzing trace with hash -860983159, now seen corresponding path program 12 times [2023-08-30 02:22:20,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:20,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442998678] [2023-08-30 02:22:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:20,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:20,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442998678] [2023-08-30 02:22:20,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442998678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:20,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068902884] [2023-08-30 02:22:20,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:22:20,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:20,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:20,741 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:20,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 02:22:20,808 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-08-30 02:22:20,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:20,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 02:22:20,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:20,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:21,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068902884] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:21,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:21,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2023-08-30 02:22:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44326139] [2023-08-30 02:22:21,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:21,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-30 02:22:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-30 02:22:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-08-30 02:22:21,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:21,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 259 transitions, 5379 flow. Second operand has 38 states, 38 states have (on average 62.28947368421053) internal successors, (2367), 38 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:21,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:21,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:21,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:22,272 INFO L130 PetriNetUnfolder]: 1050/1943 cut-off events. [2023-08-30 02:22:22,273 INFO L131 PetriNetUnfolder]: For 338236/338236 co-relation queries the response was YES. [2023-08-30 02:22:22,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27280 conditions, 1943 events. 1050/1943 cut-off events. For 338236/338236 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9854 event pairs, 12 based on Foata normal form. 20/1963 useless extension candidates. Maximal degree in co-relation 27181. Up to 790 conditions per place. [2023-08-30 02:22:22,304 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 70 selfloop transitions, 249 changer transitions 78/397 dead transitions. [2023-08-30 02:22:22,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 397 transitions, 10364 flow [2023-08-30 02:22:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-30 02:22:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-30 02:22:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2766 transitions. [2023-08-30 02:22:22,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573412698412698 [2023-08-30 02:22:22,307 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2766 transitions. [2023-08-30 02:22:22,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2766 transitions. [2023-08-30 02:22:22,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:22,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2766 transitions. [2023-08-30 02:22:22,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 65.85714285714286) internal successors, (2766), 42 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:22,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 144.0) internal successors, (6192), 43 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:22,314 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 144.0) internal successors, (6192), 43 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:22,315 INFO L175 Difference]: Start difference. First operand has 279 places, 259 transitions, 5379 flow. Second operand 42 states and 2766 transitions. [2023-08-30 02:22:22,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 397 transitions, 10364 flow [2023-08-30 02:22:22,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 397 transitions, 9124 flow, removed 506 selfloop flow, removed 22 redundant places. [2023-08-30 02:22:22,957 INFO L231 Difference]: Finished difference. Result has 306 places, 271 transitions, 5577 flow [2023-08-30 02:22:22,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4233, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5577, PETRI_PLACES=306, PETRI_TRANSITIONS=271} [2023-08-30 02:22:22,957 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 282 predicate places. [2023-08-30 02:22:22,957 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 271 transitions, 5577 flow [2023-08-30 02:22:22,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 62.28947368421053) internal successors, (2367), 38 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:22,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:22,962 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:22,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:23,167 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:23,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:23,167 INFO L85 PathProgramCache]: Analyzing trace with hash -125608721, now seen corresponding path program 13 times [2023-08-30 02:22:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97384499] [2023-08-30 02:22:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:23,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:22:23,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97384499] [2023-08-30 02:22:23,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97384499] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 02:22:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260226829] [2023-08-30 02:22:23,417 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:22:23,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:23,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:23,418 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 02:22:23,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 02:22:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:23,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 02:22:23,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:23,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260226829] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:23,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 02:22:23,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 27 [2023-08-30 02:22:23,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110855377] [2023-08-30 02:22:23,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:23,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 02:22:23,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:22:23,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 02:22:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2023-08-30 02:22:23,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 02:22:23,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 271 transitions, 5577 flow. Second operand has 29 states, 29 states have (on average 62.41379310344828) internal successors, (1810), 29 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:23,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:23,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 02:22:23,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:25,129 INFO L130 PetriNetUnfolder]: 1150/2119 cut-off events. [2023-08-30 02:22:25,129 INFO L131 PetriNetUnfolder]: For 422487/422487 co-relation queries the response was YES. [2023-08-30 02:22:25,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31341 conditions, 2119 events. 1150/2119 cut-off events. For 422487/422487 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 10718 event pairs, 15 based on Foata normal form. 20/2139 useless extension candidates. Maximal degree in co-relation 31235. Up to 850 conditions per place. [2023-08-30 02:22:25,153 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 80 selfloop transitions, 274 changer transitions 90/444 dead transitions. [2023-08-30 02:22:25,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 444 transitions, 12140 flow [2023-08-30 02:22:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 02:22:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 02:22:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3160 transitions. [2023-08-30 02:22:25,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45717592592592593 [2023-08-30 02:22:25,159 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3160 transitions. [2023-08-30 02:22:25,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3160 transitions. [2023-08-30 02:22:25,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:25,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3160 transitions. [2023-08-30 02:22:25,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 65.83333333333333) internal successors, (3160), 48 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:25,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 144.0) internal successors, (7056), 49 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:25,168 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 144.0) internal successors, (7056), 49 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:25,168 INFO L175 Difference]: Start difference. First operand has 306 places, 271 transitions, 5577 flow. Second operand 48 states and 3160 transitions. [2023-08-30 02:22:25,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 444 transitions, 12140 flow [2023-08-30 02:22:25,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 444 transitions, 10425 flow, removed 651 selfloop flow, removed 34 redundant places. [2023-08-30 02:22:25,780 INFO L231 Difference]: Finished difference. Result has 329 places, 296 transitions, 6309 flow [2023-08-30 02:22:25,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4536, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=6309, PETRI_PLACES=329, PETRI_TRANSITIONS=296} [2023-08-30 02:22:25,781 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 305 predicate places. [2023-08-30 02:22:25,781 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 296 transitions, 6309 flow [2023-08-30 02:22:25,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 62.41379310344828) internal successors, (1810), 29 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:25,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:25,781 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:25,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-30 02:22:25,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 02:22:25,985 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:25,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash -782550557, now seen corresponding path program 14 times [2023-08-30 02:22:25,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:22:25,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887703683] [2023-08-30 02:22:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:25,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:22:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:22:25,996 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:22:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:22:26,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:22:26,035 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:22:26,035 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-08-30 02:22:26,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-30 02:22:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-30 02:22:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-30 02:22:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-08-30 02:22:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-30 02:22:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-30 02:22:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-30 02:22:26,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 02:22:26,038 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1, 1, 1, 1] [2023-08-30 02:22:26,041 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 02:22:26,041 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 02:22:26,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:22:26 BasicIcfg [2023-08-30 02:22:26,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 02:22:26,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 02:22:26,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 02:22:26,095 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 02:22:26,096 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:22:05" (3/4) ... [2023-08-30 02:22:26,098 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 02:22:26,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 02:22:26,098 INFO L158 Benchmark]: Toolchain (without parser) took 21712.77ms. Allocated memory was 79.7MB in the beginning and 484.4MB in the end (delta: 404.8MB). Free memory was 55.4MB in the beginning and 139.8MB in the end (delta: -84.5MB). Peak memory consumption was 322.3MB. Max. memory is 16.1GB. [2023-08-30 02:22:26,099 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:22:26,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.29ms. Allocated memory is still 79.7MB. Free memory was 55.3MB in the beginning and 58.3MB in the end (delta: -3.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2023-08-30 02:22:26,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.31ms. Allocated memory is still 79.7MB. Free memory was 58.3MB in the beginning and 56.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:22:26,099 INFO L158 Benchmark]: Boogie Preprocessor took 41.00ms. Allocated memory is still 79.7MB. Free memory was 56.3MB in the beginning and 54.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:22:26,100 INFO L158 Benchmark]: RCFGBuilder took 400.63ms. Allocated memory is still 79.7MB. Free memory was 54.9MB in the beginning and 41.6MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 02:22:26,100 INFO L158 Benchmark]: TraceAbstraction took 20874.64ms. Allocated memory was 79.7MB in the beginning and 484.4MB in the end (delta: 404.8MB). Free memory was 40.9MB in the beginning and 139.8MB in the end (delta: -99.0MB). Peak memory consumption was 306.8MB. Max. memory is 16.1GB. [2023-08-30 02:22:26,101 INFO L158 Benchmark]: Witness Printer took 2.97ms. Allocated memory is still 484.4MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:22:26,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.29ms. Allocated memory is still 79.7MB. Free memory was 55.3MB in the beginning and 58.3MB in the end (delta: -3.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.31ms. Allocated memory is still 79.7MB. Free memory was 58.3MB in the beginning and 56.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.00ms. Allocated memory is still 79.7MB. Free memory was 56.3MB in the beginning and 54.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 400.63ms. Allocated memory is still 79.7MB. Free memory was 54.9MB in the beginning and 41.6MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 20874.64ms. Allocated memory was 79.7MB in the beginning and 484.4MB in the end (delta: 404.8MB). Free memory was 40.9MB in the beginning and 139.8MB in the end (delta: -99.0MB). Peak memory consumption was 306.8MB. Max. memory is 16.1GB. * Witness Printer took 2.97ms. Allocated memory is still 484.4MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 74 PlacesBefore, 24 PlacesAfterwards, 72 TransitionsBefore, 20 TransitionsAfterwards, 1254 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 1104 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 978, independent: 952, independent conditional: 0, independent unconditional: 952, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 644, independent: 633, independent conditional: 0, independent unconditional: 633, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 978, independent: 319, independent conditional: 0, independent unconditional: 319, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 644, unknown conditional: 0, unknown unconditional: 644] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=25, id1={3:0}, id2={5:0}, j=26, k=10, k=10] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 92 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.7s, OverallIterations: 21, TraceHistogramMax: 10, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4763 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4582 mSDsluCounter, 818 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 763 mSDsCounter, 487 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4729 IncrementalHoareTripleChecker+Invalid, 5216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 487 mSolverCounterUnsat, 55 mSDtfsCounter, 4729 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 770 GetRequests, 213 SyntacticMatches, 14 SemanticMatches, 543 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8880 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6309occurred in iteration=20, InterpolantAutomatonStates: 371, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 450 NumberOfCodeBlocks, 450 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 560 ConstructedInterpolants, 0 QuantifiedInterpolants, 2452 SizeOfPredicates, 98 NumberOfNonLiveVariables, 1640 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 0/816 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-30 02:22:26,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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/pthread/triangular-longer-2.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:22:27,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:22:27,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:22:27,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:22:27,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:22:27,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:22:27,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:22:27,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:22:27,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:22:27,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:22:27,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:22:27,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:22:27,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:22:27,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:22:27,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:22:27,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:22:27,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:22:27,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:22:27,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:22:27,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:22:27,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:22:27,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:22:27,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:22:27,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:22:27,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:22:27,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:22:27,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:22:27,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:22:27,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:22:27,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:22:27,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:22:27,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:22:27,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:22:27,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:22:27,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:22:27,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:22:27,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:22:27,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:22:27,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:22:27,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:22:27,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:22:27,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 02:22:27,779 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:22:27,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:22:27,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:22:27,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:22:27,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:22:27,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:22:27,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:22:27,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:22:27,781 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:22:27,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:22:27,782 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:22:27,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:22:27,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:22:27,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:22:27,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:22:27,783 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:22:27,783 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:22:27,783 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:22:27,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:22:27,784 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:22:27,784 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 02:22:27,784 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 02:22:27,784 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:22:27,784 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:22:27,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:22:27,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:22:27,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:22:27,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:22:27,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:22:27,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:22:27,785 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 02:22:27,785 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 02:22:27,786 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:22:27,786 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:22:27,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:22:27,786 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 02:22:27,786 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:22:27,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:22:28,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:22:28,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:22:28,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:22:28,040 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:22:28,040 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:22:28,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-30 02:22:28,992 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:22:29,188 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:22:29,189 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-30 02:22:29,197 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733387014/93f1139178404362bf13e70ae773cb7d/FLAG4daf7a721 [2023-08-30 02:22:29,208 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733387014/93f1139178404362bf13e70ae773cb7d [2023-08-30 02:22:29,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:22:29,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:22:29,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:22:29,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:22:29,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:22:29,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69862e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29, skipping insertion in model container [2023-08-30 02:22:29,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:22:29,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:22:29,410 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-08-30 02:22:29,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:22:29,422 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:22:29,473 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-08-30 02:22:29,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:22:29,511 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:22:29,511 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:22:29,515 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:22:29,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29 WrapperNode [2023-08-30 02:22:29,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:22:29,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:22:29,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:22:29,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:22:29,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,585 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2023-08-30 02:22:29,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:22:29,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:22:29,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:22:29,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:22:29,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,614 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:22:29,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:22:29,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:22:29,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:22:29,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (1/1) ... [2023-08-30 02:22:29,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:22:29,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:22:29,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 02:22:29,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 02:22:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 02:22:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 02:22:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 02:22:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 02:22:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 02:22:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:22:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:22:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:22:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 02:22:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 02:22:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 02:22:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:22:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:22:29,679 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 02:22:29,791 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:22:29,792 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:22:29,968 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:22:29,972 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:22:29,972 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 02:22:29,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:22:29 BoogieIcfgContainer [2023-08-30 02:22:29,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:22:29,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:22:29,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:22:29,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:22:29,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:22:29" (1/3) ... [2023-08-30 02:22:29,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6f3d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:22:29, skipping insertion in model container [2023-08-30 02:22:29,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:22:29" (2/3) ... [2023-08-30 02:22:29,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6f3d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:22:29, skipping insertion in model container [2023-08-30 02:22:29,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:22:29" (3/3) ... [2023-08-30 02:22:29,986 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-08-30 02:22:29,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:22:29,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 02:22:29,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:22:30,053 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:22:30,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 160 flow [2023-08-30 02:22:30,116 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-30 02:22:30,117 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:22:30,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 5/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 02:22:30,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 160 flow [2023-08-30 02:22:30,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 73 transitions, 152 flow [2023-08-30 02:22:30,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:22:30,146 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 73 transitions, 152 flow [2023-08-30 02:22:30,152 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 73 transitions, 152 flow [2023-08-30 02:22:30,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 152 flow [2023-08-30 02:22:30,175 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-30 02:22:30,175 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:22:30,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 5/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 02:22:30,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-30 02:22:33,451 INFO L134 LiptonReduction]: Checked pairs total: 1134 [2023-08-30 02:22:33,452 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-30 02:22:33,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:22:33,464 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;@48a16ee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:22:33,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 02:22:33,465 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 02:22:33,466 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:22:33,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:33,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:22:33,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:33,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash 295, now seen corresponding path program 1 times [2023-08-30 02:22:33,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:33,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332817345] [2023-08-30 02:22:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:33,477 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 [2023-08-30 02:22:33,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:33,480 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) [2023-08-30 02:22:33,480 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 [2023-08-30 02:22:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:33,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 02:22:33,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:33,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:33,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332817345] [2023-08-30 02:22:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332817345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:22:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485665219] [2023-08-30 02:22:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:33,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:22:33,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:33,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:22:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:22:33,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 144 [2023-08-30 02:22:33,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:33,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:33,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 144 [2023-08-30 02:22:33,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:33,632 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2023-08-30 02:22:33,633 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:22:33,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 464 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-08-30 02:22:33,635 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-08-30 02:22:33,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-30 02:22:33,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:22:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:22:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 158 transitions. [2023-08-30 02:22:33,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2023-08-30 02:22:33,656 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 158 transitions. [2023-08-30 02:22:33,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 158 transitions. [2023-08-30 02:22:33,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:33,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 158 transitions. [2023-08-30 02:22:33,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:33,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:33,669 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:33,670 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 158 transitions. [2023-08-30 02:22:33,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-30 02:22:33,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:22:33,673 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-08-30 02:22:33,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-30 02:22:33,676 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-30 02:22:33,676 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-08-30 02:22:33,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:33,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:33,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:22:33,697 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 (2)] Ended with exit code 0 [2023-08-30 02:22:33,883 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 [2023-08-30 02:22:33,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:33,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:33,884 INFO L85 PathProgramCache]: Analyzing trace with hash 288861, now seen corresponding path program 1 times [2023-08-30 02:22:33,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:33,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129775533] [2023-08-30 02:22:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:33,885 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 [2023-08-30 02:22:33,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:33,890 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) [2023-08-30 02:22:33,892 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 [2023-08-30 02:22:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:33,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 02:22:33,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:33,985 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 02:22:33,986 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 1 case distinctions, treesize of input 9 treesize of output 19 [2023-08-30 02:22:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:33,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:33,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:33,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129775533] [2023-08-30 02:22:33,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129775533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:33,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:33,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:22:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848423352] [2023-08-30 02:22:34,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:22:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:22:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:22:34,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:34,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:34,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:34,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:34,104 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2023-08-30 02:22:34,104 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:22:34,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 349 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2023-08-30 02:22:34,108 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-30 02:22:34,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-08-30 02:22:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:22:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:22:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-30 02:22:34,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-30 02:22:34,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-30 02:22:34,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-30 02:22:34,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:34,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-30 02:22:34,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,119 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 208 transitions. [2023-08-30 02:22:34,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-08-30 02:22:34,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:22:34,120 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-08-30 02:22:34,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-30 02:22:34,121 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-30 02:22:34,121 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-08-30 02:22:34,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:34,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:22:34,145 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 (3)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:34,330 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 [2023-08-30 02:22:34,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:34,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash 288862, now seen corresponding path program 1 times [2023-08-30 02:22:34,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:34,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645792065] [2023-08-30 02:22:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:34,331 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 [2023-08-30 02:22:34,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:34,332 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) [2023-08-30 02:22:34,334 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 [2023-08-30 02:22:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:34,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 02:22:34,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:34,391 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 02:22:34,391 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-08-30 02:22:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:34,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:34,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:34,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645792065] [2023-08-30 02:22:34,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645792065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:34,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:34,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:22:34,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556095674] [2023-08-30 02:22:34,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:34,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:22:34,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:34,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:22:34,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:22:34,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 144 [2023-08-30 02:22:34,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:34,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 144 [2023-08-30 02:22:34,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:34,493 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2023-08-30 02:22:34,493 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 02:22:34,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 326 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2023-08-30 02:22:34,494 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-30 02:22:34,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-08-30 02:22:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:22:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:22:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-08-30 02:22:34,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 02:22:34,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-08-30 02:22:34,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-08-30 02:22:34,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:34,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-08-30 02:22:34,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,498 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 216 transitions. [2023-08-30 02:22:34,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-08-30 02:22:34,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:22:34,499 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-30 02:22:34,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-30 02:22:34,499 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-08-30 02:22:34,499 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-30 02:22:34,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:34,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 02:22:34,508 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 [2023-08-30 02:22:34,706 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 [2023-08-30 02:22:34,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:34,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash 15687470, now seen corresponding path program 1 times [2023-08-30 02:22:34,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:34,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457874866] [2023-08-30 02:22:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:34,707 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 [2023-08-30 02:22:34,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:34,708 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) [2023-08-30 02:22:34,709 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 [2023-08-30 02:22:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:34,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:22:34,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:34,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:34,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:34,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457874866] [2023-08-30 02:22:34,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457874866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:34,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:34,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:22:34,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848401338] [2023-08-30 02:22:34,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:34,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:22:34,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:34,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:22:34,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:22:34,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 144 [2023-08-30 02:22:34,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:34,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 144 [2023-08-30 02:22:34,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:34,933 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2023-08-30 02:22:34,933 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 02:22:34,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 878 event pairs, 14 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 144 conditions per place. [2023-08-30 02:22:34,937 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-30 02:22:34,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 166 flow [2023-08-30 02:22:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 02:22:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 02:22:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2023-08-30 02:22:34,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2023-08-30 02:22:34,939 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 355 transitions. [2023-08-30 02:22:34,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 355 transitions. [2023-08-30 02:22:34,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:34,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 355 transitions. [2023-08-30 02:22:34,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,943 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,944 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 355 transitions. [2023-08-30 02:22:34,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 166 flow [2023-08-30 02:22:34,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:22:34,946 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 79 flow [2023-08-30 02:22:34,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-08-30 02:22:34,948 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-30 02:22:34,948 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 79 flow [2023-08-30 02:22:34,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:34,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:34,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:34,976 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 (5)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:35,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 [2023-08-30 02:22:35,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:35,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:35,157 INFO L85 PathProgramCache]: Analyzing trace with hash 486312123, now seen corresponding path program 1 times [2023-08-30 02:22:35,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:35,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644443301] [2023-08-30 02:22:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:35,158 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 [2023-08-30 02:22:35,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:35,159 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2023-08-30 02:22:35,160 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 (6)] Waiting until timeout for monitored process [2023-08-30 02:22:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:35,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 02:22:35,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:35,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:35,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:35,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644443301] [2023-08-30 02:22:35,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644443301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:35,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:35,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:22:35,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103461027] [2023-08-30 02:22:35,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:35,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:22:35,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:35,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:22:35,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:22:37,414 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 [0] [2023-08-30 02:22:37,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 144 [2023-08-30 02:22:37,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:37,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 144 [2023-08-30 02:22:37,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:37,533 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2023-08-30 02:22:37,534 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-30 02:22:37,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 212 events. 130/212 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 629 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 579. Up to 143 conditions per place. [2023-08-30 02:22:37,536 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 17 selfloop transitions, 1 changer transitions 10/28 dead transitions. [2023-08-30 02:22:37,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 167 flow [2023-08-30 02:22:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 02:22:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 02:22:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-08-30 02:22:37,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2023-08-30 02:22:37,537 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 248 transitions. [2023-08-30 02:22:37,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 248 transitions. [2023-08-30 02:22:37,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:37,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 248 transitions. [2023-08-30 02:22:37,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,540 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,540 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 79 flow. Second operand 4 states and 248 transitions. [2023-08-30 02:22:37,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 167 flow [2023-08-30 02:22:37,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:22:37,542 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 77 flow [2023-08-30 02:22:37,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-30 02:22:37,543 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2023-08-30 02:22:37,544 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 77 flow [2023-08-30 02:22:37,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:37,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:37,553 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 (6)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:37,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 [2023-08-30 02:22:37,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:37,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2080325179, now seen corresponding path program 1 times [2023-08-30 02:22:37,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:37,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728501250] [2023-08-30 02:22:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:37,753 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 [2023-08-30 02:22:37,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:37,757 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-08-30 02:22:37,758 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 (7)] Waiting until timeout for monitored process [2023-08-30 02:22:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:37,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:22:37,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:37,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:37,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:37,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728501250] [2023-08-30 02:22:37,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728501250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:37,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:37,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:22:37,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382128259] [2023-08-30 02:22:37,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:37,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:22:37,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:22:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:22:37,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:37,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:37,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:37,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:37,933 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2023-08-30 02:22:37,933 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-30 02:22:37,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 157 events. 92/157 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 443 event pairs, 23 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 449. Up to 61 conditions per place. [2023-08-30 02:22:37,934 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 22 selfloop transitions, 9 changer transitions 3/34 dead transitions. [2023-08-30 02:22:37,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 193 flow [2023-08-30 02:22:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 02:22:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 02:22:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2023-08-30 02:22:37,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-08-30 02:22:37,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 342 transitions. [2023-08-30 02:22:37,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 342 transitions. [2023-08-30 02:22:37,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:37,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 342 transitions. [2023-08-30 02:22:37,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,938 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 77 flow. Second operand 5 states and 342 transitions. [2023-08-30 02:22:37,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 193 flow [2023-08-30 02:22:37,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:22:37,939 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 119 flow [2023-08-30 02:22:37,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-08-30 02:22:37,940 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-08-30 02:22:37,940 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 119 flow [2023-08-30 02:22:37,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:37,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:37,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:37,963 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 (7)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:38,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 [2023-08-30 02:22:38,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:38,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:38,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2104567520, now seen corresponding path program 1 times [2023-08-30 02:22:38,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:38,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874158170] [2023-08-30 02:22:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:38,153 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 [2023-08-30 02:22:38,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:38,154 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2023-08-30 02:22:38,156 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 (8)] Waiting until timeout for monitored process [2023-08-30 02:22:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:38,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:22:38,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:38,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:38,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:38,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874158170] [2023-08-30 02:22:38,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874158170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:38,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:38,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:22:38,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736982597] [2023-08-30 02:22:38,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:38,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:22:38,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:22:38,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:22:38,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:38,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:38,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:38,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:38,336 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2023-08-30 02:22:38,337 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-08-30 02:22:38,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 229 events. 132/229 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 716 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 733. Up to 101 conditions per place. [2023-08-30 02:22:38,338 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-30 02:22:38,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 301 flow [2023-08-30 02:22:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 02:22:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 02:22:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2023-08-30 02:22:38,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47453703703703703 [2023-08-30 02:22:38,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 410 transitions. [2023-08-30 02:22:38,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 410 transitions. [2023-08-30 02:22:38,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:38,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 410 transitions. [2023-08-30 02:22:38,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,342 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,342 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 119 flow. Second operand 6 states and 410 transitions. [2023-08-30 02:22:38,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 301 flow [2023-08-30 02:22:38,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 02:22:38,344 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 200 flow [2023-08-30 02:22:38,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-30 02:22:38,345 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-08-30 02:22:38,345 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 200 flow [2023-08-30 02:22:38,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:38,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:38,355 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 (8)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:38,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 [2023-08-30 02:22:38,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:38,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:38,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2104543340, now seen corresponding path program 2 times [2023-08-30 02:22:38,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:38,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155299984] [2023-08-30 02:22:38,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:22:38,553 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 [2023-08-30 02:22:38,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:38,554 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-08-30 02:22:38,556 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 (9)] Waiting until timeout for monitored process [2023-08-30 02:22:38,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 02:22:38,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:38,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:22:38,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:38,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:38,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155299984] [2023-08-30 02:22:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155299984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:38,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:22:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921391707] [2023-08-30 02:22:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:38,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:22:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:38,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:22:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:22:38,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:38,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:38,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:38,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:38,730 INFO L130 PetriNetUnfolder]: 124/219 cut-off events. [2023-08-30 02:22:38,731 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2023-08-30 02:22:38,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 219 events. 124/219 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 705 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 818. Up to 107 conditions per place. [2023-08-30 02:22:38,732 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 12 changer transitions 6/48 dead transitions. [2023-08-30 02:22:38,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 381 flow [2023-08-30 02:22:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 02:22:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 02:22:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 409 transitions. [2023-08-30 02:22:38,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47337962962962965 [2023-08-30 02:22:38,733 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 409 transitions. [2023-08-30 02:22:38,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 409 transitions. [2023-08-30 02:22:38,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:38,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 409 transitions. [2023-08-30 02:22:38,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,736 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,736 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 200 flow. Second operand 6 states and 409 transitions. [2023-08-30 02:22:38,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 381 flow [2023-08-30 02:22:38,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 355 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-30 02:22:38,738 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 242 flow [2023-08-30 02:22:38,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-08-30 02:22:38,739 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2023-08-30 02:22:38,739 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 242 flow [2023-08-30 02:22:38,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:38,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:38,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:38,751 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 (9)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:38,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-08-30 02:22:38,946 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:38,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:38,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2065235665, now seen corresponding path program 1 times [2023-08-30 02:22:38,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:38,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785394527] [2023-08-30 02:22:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:22:38,947 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 [2023-08-30 02:22:38,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:38,950 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-08-30 02:22:38,952 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 (10)] Waiting until timeout for monitored process [2023-08-30 02:22:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:39,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 02:22:39,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:39,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:39,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785394527] [2023-08-30 02:22:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785394527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:39,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:39,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:22:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257238523] [2023-08-30 02:22:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:22:39,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:22:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:22:39,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:39,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:39,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:39,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:39,249 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2023-08-30 02:22:39,249 INFO L131 PetriNetUnfolder]: For 1057/1057 co-relation queries the response was YES. [2023-08-30 02:22:39,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 303 events. 172/303 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1066 event pairs, 41 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1216. Up to 131 conditions per place. [2023-08-30 02:22:39,251 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 43 selfloop transitions, 15 changer transitions 5/63 dead transitions. [2023-08-30 02:22:39,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 536 flow [2023-08-30 02:22:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 02:22:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 02:22:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 610 transitions. [2023-08-30 02:22:39,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470679012345679 [2023-08-30 02:22:39,253 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 610 transitions. [2023-08-30 02:22:39,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 610 transitions. [2023-08-30 02:22:39,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:39,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 610 transitions. [2023-08-30 02:22:39,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.77777777777777) internal successors, (610), 9 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,256 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,256 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 242 flow. Second operand 9 states and 610 transitions. [2023-08-30 02:22:39,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 536 flow [2023-08-30 02:22:39,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 514 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 02:22:39,260 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 330 flow [2023-08-30 02:22:39,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-08-30 02:22:39,261 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-08-30 02:22:39,261 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 330 flow [2023-08-30 02:22:39,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:39,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:39,270 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 (10)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:39,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-08-30 02:22:39,468 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:39,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2065211485, now seen corresponding path program 2 times [2023-08-30 02:22:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:39,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221414374] [2023-08-30 02:22:39,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:22:39,469 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 [2023-08-30 02:22:39,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:39,470 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-08-30 02:22:39,472 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 (11)] Waiting until timeout for monitored process [2023-08-30 02:22:39,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 02:22:39,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:39,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 02:22:39,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:39,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:39,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221414374] [2023-08-30 02:22:39,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221414374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:39,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:39,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:22:39,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330279143] [2023-08-30 02:22:39,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:39,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:22:39,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:39,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:22:39,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:22:39,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:39,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:39,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:39,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:39,682 INFO L130 PetriNetUnfolder]: 168/299 cut-off events. [2023-08-30 02:22:39,683 INFO L131 PetriNetUnfolder]: For 1657/1657 co-relation queries the response was YES. [2023-08-30 02:22:39,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 299 events. 168/299 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1074 event pairs, 45 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 1369. Up to 137 conditions per place. [2023-08-30 02:22:39,684 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 38 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2023-08-30 02:22:39,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 593 flow [2023-08-30 02:22:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:22:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:22:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-30 02:22:39,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-30 02:22:39,686 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-30 02:22:39,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-30 02:22:39,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:39,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-30 02:22:39,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,688 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,689 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 330 flow. Second operand 7 states and 476 transitions. [2023-08-30 02:22:39,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 593 flow [2023-08-30 02:22:39,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 522 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-08-30 02:22:39,693 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 343 flow [2023-08-30 02:22:39,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2023-08-30 02:22:39,693 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-30 02:22:39,693 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 343 flow [2023-08-30 02:22:39,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:39,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:39,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:39,712 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 (11)] Ended with exit code 0 [2023-08-30 02:22:39,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2023-08-30 02:22:39,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:39,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:39,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2065927585, now seen corresponding path program 3 times [2023-08-30 02:22:39,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:39,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027999111] [2023-08-30 02:22:39,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:22:39,902 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 [2023-08-30 02:22:39,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:39,903 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-08-30 02:22:39,905 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 (12)] Waiting until timeout for monitored process [2023-08-30 02:22:39,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 02:22:39,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:39,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:22:39,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:39,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:39,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:39,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027999111] [2023-08-30 02:22:39,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027999111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:39,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:40,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:22:40,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661746558] [2023-08-30 02:22:40,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:40,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:22:40,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:22:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:22:40,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:40,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:40,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:40,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:40,145 INFO L130 PetriNetUnfolder]: 164/295 cut-off events. [2023-08-30 02:22:40,146 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2023-08-30 02:22:40,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 295 events. 164/295 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1103 event pairs, 46 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1316. Up to 222 conditions per place. [2023-08-30 02:22:40,147 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 44 selfloop transitions, 9 changer transitions 9/62 dead transitions. [2023-08-30 02:22:40,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 571 flow [2023-08-30 02:22:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:22:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:22:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-30 02:22:40,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-30 02:22:40,149 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-30 02:22:40,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-30 02:22:40,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:40,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-30 02:22:40,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,151 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 343 flow. Second operand 7 states and 476 transitions. [2023-08-30 02:22:40,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 571 flow [2023-08-30 02:22:40,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 541 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 02:22:40,163 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 367 flow [2023-08-30 02:22:40,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2023-08-30 02:22:40,164 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2023-08-30 02:22:40,164 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 367 flow [2023-08-30 02:22:40,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:40,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:40,192 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 (12)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:40,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2023-08-30 02:22:40,377 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:40,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2065153825, now seen corresponding path program 4 times [2023-08-30 02:22:40,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:40,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776543385] [2023-08-30 02:22:40,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:22:40,378 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 [2023-08-30 02:22:40,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:40,379 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-08-30 02:22:40,380 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 (13)] Waiting until timeout for monitored process [2023-08-30 02:22:40,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:22:40,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:40,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 02:22:40,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:40,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:22:40,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:40,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776543385] [2023-08-30 02:22:40,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776543385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:22:40,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:22:40,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:22:40,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914843205] [2023-08-30 02:22:40,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:22:40,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:22:40,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:40,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:22:40,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:22:40,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:40,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:40,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:40,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:40,605 INFO L130 PetriNetUnfolder]: 176/315 cut-off events. [2023-08-30 02:22:40,605 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2023-08-30 02:22:40,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 315 events. 176/315 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1176 event pairs, 53 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 1458. Up to 177 conditions per place. [2023-08-30 02:22:40,607 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 41 selfloop transitions, 16 changer transitions 8/65 dead transitions. [2023-08-30 02:22:40,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 643 flow [2023-08-30 02:22:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:22:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:22:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 475 transitions. [2023-08-30 02:22:40,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712301587301587 [2023-08-30 02:22:40,608 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 475 transitions. [2023-08-30 02:22:40,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 475 transitions. [2023-08-30 02:22:40,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:40,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 475 transitions. [2023-08-30 02:22:40,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,611 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,611 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 367 flow. Second operand 7 states and 475 transitions. [2023-08-30 02:22:40,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 643 flow [2023-08-30 02:22:40,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 617 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 02:22:40,616 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 438 flow [2023-08-30 02:22:40,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2023-08-30 02:22:40,616 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2023-08-30 02:22:40,617 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 438 flow [2023-08-30 02:22:40,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:40,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:40,617 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:40,628 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 (13)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:40,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-08-30 02:22:40,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:40,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash 402976459, now seen corresponding path program 5 times [2023-08-30 02:22:40,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:40,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559217523] [2023-08-30 02:22:40,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:22:40,825 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 [2023-08-30 02:22:40,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:40,826 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-08-30 02:22:40,827 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 (14)] Waiting until timeout for monitored process [2023-08-30 02:22:40,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:22:40,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:40,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:22:40,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:40,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:41,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:41,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559217523] [2023-08-30 02:22:41,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559217523] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:41,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:22:41,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 02:22:41,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791114232] [2023-08-30 02:22:41,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:41,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:22:41,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:41,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:22:41,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:22:41,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:41,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:41,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:41,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:41,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:41,653 INFO L130 PetriNetUnfolder]: 224/395 cut-off events. [2023-08-30 02:22:41,654 INFO L131 PetriNetUnfolder]: For 4433/4433 co-relation queries the response was YES. [2023-08-30 02:22:41,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 395 events. 224/395 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1510 event pairs, 12 based on Foata normal form. 16/411 useless extension candidates. Maximal degree in co-relation 2027. Up to 99 conditions per place. [2023-08-30 02:22:41,656 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 36 selfloop transitions, 43 changer transitions 26/105 dead transitions. [2023-08-30 02:22:41,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1130 flow [2023-08-30 02:22:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 02:22:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 02:22:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1079 transitions. [2023-08-30 02:22:41,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683159722222222 [2023-08-30 02:22:41,658 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1079 transitions. [2023-08-30 02:22:41,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1079 transitions. [2023-08-30 02:22:41,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:41,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1079 transitions. [2023-08-30 02:22:41,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.4375) internal successors, (1079), 16 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:41,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:41,663 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:41,663 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 438 flow. Second operand 16 states and 1079 transitions. [2023-08-30 02:22:41,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1130 flow [2023-08-30 02:22:41,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 1081 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-30 02:22:41,669 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 837 flow [2023-08-30 02:22:41,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2023-08-30 02:22:41,670 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2023-08-30 02:22:41,670 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 837 flow [2023-08-30 02:22:41,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:41,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:41,671 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:41,683 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 (14)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:41,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 [2023-08-30 02:22:41,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:41,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:41,878 INFO L85 PathProgramCache]: Analyzing trace with hash 380812761, now seen corresponding path program 6 times [2023-08-30 02:22:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:41,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914102505] [2023-08-30 02:22:41,878 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:22:41,878 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 [2023-08-30 02:22:41,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:41,879 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-08-30 02:22:41,879 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 (15)] Waiting until timeout for monitored process [2023-08-30 02:22:41,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 02:22:41,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:41,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:22:41,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:41,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:42,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:42,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914102505] [2023-08-30 02:22:42,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914102505] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:42,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:22:42,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 02:22:42,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995387124] [2023-08-30 02:22:42,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:42,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:22:42,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:42,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:22:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:22:42,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:42,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 837 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:42,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:42,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:42,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:42,448 INFO L130 PetriNetUnfolder]: 248/443 cut-off events. [2023-08-30 02:22:42,448 INFO L131 PetriNetUnfolder]: For 7883/7883 co-relation queries the response was YES. [2023-08-30 02:22:42,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 443 events. 248/443 cut-off events. For 7883/7883 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1711 event pairs, 63 based on Foata normal form. 24/467 useless extension candidates. Maximal degree in co-relation 2583. Up to 281 conditions per place. [2023-08-30 02:22:42,450 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 63 selfloop transitions, 19 changer transitions 19/101 dead transitions. [2023-08-30 02:22:42,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1393 flow [2023-08-30 02:22:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 02:22:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 02:22:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 809 transitions. [2023-08-30 02:22:42,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681712962962963 [2023-08-30 02:22:42,453 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 809 transitions. [2023-08-30 02:22:42,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 809 transitions. [2023-08-30 02:22:42,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:42,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 809 transitions. [2023-08-30 02:22:42,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 67.41666666666667) internal successors, (809), 12 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:42,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:42,456 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:42,456 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 837 flow. Second operand 12 states and 809 transitions. [2023-08-30 02:22:42,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1393 flow [2023-08-30 02:22:42,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1033 flow, removed 161 selfloop flow, removed 9 redundant places. [2023-08-30 02:22:42,467 INFO L231 Difference]: Finished difference. Result has 92 places, 67 transitions, 738 flow [2023-08-30 02:22:42,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2023-08-30 02:22:42,468 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-08-30 02:22:42,468 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 738 flow [2023-08-30 02:22:42,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:42,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:42,468 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:42,477 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 (15)] Ended with exit code 0 [2023-08-30 02:22:42,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-08-30 02:22:42,675 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:42,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:42,675 INFO L85 PathProgramCache]: Analyzing trace with hash 404049741, now seen corresponding path program 7 times [2023-08-30 02:22:42,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:42,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310936697] [2023-08-30 02:22:42,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:22:42,676 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 [2023-08-30 02:22:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:42,677 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-08-30 02:22:42,679 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 (16)] Waiting until timeout for monitored process [2023-08-30 02:22:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:42,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:22:42,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:42,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:42,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:42,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310936697] [2023-08-30 02:22:42,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310936697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:42,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:22:42,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 02:22:42,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354473872] [2023-08-30 02:22:42,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:42,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:22:42,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:22:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:22:42,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:42,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:42,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:42,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:42,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:43,501 INFO L130 PetriNetUnfolder]: 336/603 cut-off events. [2023-08-30 02:22:43,502 INFO L131 PetriNetUnfolder]: For 12794/12794 co-relation queries the response was YES. [2023-08-30 02:22:43,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 603 events. 336/603 cut-off events. For 12794/12794 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2591 event pairs, 62 based on Foata normal form. 24/627 useless extension candidates. Maximal degree in co-relation 3588. Up to 248 conditions per place. [2023-08-30 02:22:43,506 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 81 selfloop transitions, 37 changer transitions 14/132 dead transitions. [2023-08-30 02:22:43,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1675 flow [2023-08-30 02:22:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 02:22:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 02:22:43,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1079 transitions. [2023-08-30 02:22:43,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683159722222222 [2023-08-30 02:22:43,510 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1079 transitions. [2023-08-30 02:22:43,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1079 transitions. [2023-08-30 02:22:43,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:43,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1079 transitions. [2023-08-30 02:22:43,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.4375) internal successors, (1079), 16 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:43,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:43,516 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:43,516 INFO L175 Difference]: Start difference. First operand has 92 places, 67 transitions, 738 flow. Second operand 16 states and 1079 transitions. [2023-08-30 02:22:43,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1675 flow [2023-08-30 02:22:43,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1572 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 02:22:43,531 INFO L231 Difference]: Finished difference. Result has 111 places, 81 transitions, 1071 flow [2023-08-30 02:22:43,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2023-08-30 02:22:43,531 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2023-08-30 02:22:43,532 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 1071 flow [2023-08-30 02:22:43,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:43,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:43,532 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:43,547 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 (16)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:43,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-08-30 02:22:43,740 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:43,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash 404765841, now seen corresponding path program 8 times [2023-08-30 02:22:43,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:43,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866546725] [2023-08-30 02:22:43,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:22:43,742 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 [2023-08-30 02:22:43,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:43,743 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-08-30 02:22:43,745 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 (17)] Waiting until timeout for monitored process [2023-08-30 02:22:43,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:22:43,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:43,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 02:22:43,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:43,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:43,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:43,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866546725] [2023-08-30 02:22:43,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866546725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:43,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:22:43,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 02:22:43,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220038477] [2023-08-30 02:22:43,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:43,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 02:22:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 02:22:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-30 02:22:44,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:44,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 1071 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:44,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:44,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:44,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:44,577 INFO L130 PetriNetUnfolder]: 384/691 cut-off events. [2023-08-30 02:22:44,577 INFO L131 PetriNetUnfolder]: For 24504/24504 co-relation queries the response was YES. [2023-08-30 02:22:44,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4872 conditions, 691 events. 384/691 cut-off events. For 24504/24504 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3071 event pairs, 33 based on Foata normal form. 32/723 useless extension candidates. Maximal degree in co-relation 4827. Up to 216 conditions per place. [2023-08-30 02:22:44,582 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 57 selfloop transitions, 70 changer transitions 30/157 dead transitions. [2023-08-30 02:22:44,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 157 transitions, 2462 flow [2023-08-30 02:22:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 02:22:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 02:22:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2023-08-30 02:22:44,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679783950617284 [2023-08-30 02:22:44,584 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2023-08-30 02:22:44,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2023-08-30 02:22:44,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:44,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2023-08-30 02:22:44,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:44,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:44,588 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:44,588 INFO L175 Difference]: Start difference. First operand has 111 places, 81 transitions, 1071 flow. Second operand 18 states and 1213 transitions. [2023-08-30 02:22:44,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 157 transitions, 2462 flow [2023-08-30 02:22:44,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 2111 flow, removed 161 selfloop flow, removed 7 redundant places. [2023-08-30 02:22:44,618 INFO L231 Difference]: Finished difference. Result has 131 places, 103 transitions, 1585 flow [2023-08-30 02:22:44,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=131, PETRI_TRANSITIONS=103} [2023-08-30 02:22:44,619 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2023-08-30 02:22:44,619 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 103 transitions, 1585 flow [2023-08-30 02:22:44,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:44,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:44,619 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:44,626 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 (17)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:44,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-08-30 02:22:44,826 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:44,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1570592883, now seen corresponding path program 9 times [2023-08-30 02:22:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003497833] [2023-08-30 02:22:44,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:22:44,827 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 [2023-08-30 02:22:44,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:44,828 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-08-30 02:22:44,828 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 (18)] Waiting until timeout for monitored process [2023-08-30 02:22:44,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 02:22:44,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:44,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:22:44,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:22:44,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:22:45,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:45,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003497833] [2023-08-30 02:22:45,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003497833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:45,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:22:45,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-30 02:22:45,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701233454] [2023-08-30 02:22:45,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:45,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 02:22:45,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:45,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 02:22:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-08-30 02:22:45,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:45,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 103 transitions, 1585 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:45,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:45,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:45,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:46,381 INFO L130 PetriNetUnfolder]: 488/891 cut-off events. [2023-08-30 02:22:46,381 INFO L131 PetriNetUnfolder]: For 43601/43601 co-relation queries the response was YES. [2023-08-30 02:22:46,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7103 conditions, 891 events. 488/891 cut-off events. For 43601/43601 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4317 event pairs, 88 based on Foata normal form. 32/923 useless extension candidates. Maximal degree in co-relation 7049. Up to 401 conditions per place. [2023-08-30 02:22:46,387 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 99 selfloop transitions, 63 changer transitions 43/205 dead transitions. [2023-08-30 02:22:46,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 3412 flow [2023-08-30 02:22:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 02:22:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 02:22:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1610 transitions. [2023-08-30 02:22:46,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46585648148148145 [2023-08-30 02:22:46,390 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1610 transitions. [2023-08-30 02:22:46,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1610 transitions. [2023-08-30 02:22:46,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:46,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1610 transitions. [2023-08-30 02:22:46,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.08333333333333) internal successors, (1610), 24 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:46,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 144.0) internal successors, (3600), 25 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:46,430 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 144.0) internal successors, (3600), 25 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:46,430 INFO L175 Difference]: Start difference. First operand has 131 places, 103 transitions, 1585 flow. Second operand 24 states and 1610 transitions. [2023-08-30 02:22:46,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 3412 flow [2023-08-30 02:22:46,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 205 transitions, 2935 flow, removed 222 selfloop flow, removed 8 redundant places. [2023-08-30 02:22:46,477 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 2082 flow [2023-08-30 02:22:46,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2082, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2023-08-30 02:22:46,477 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2023-08-30 02:22:46,478 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 2082 flow [2023-08-30 02:22:46,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:46,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:46,478 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:46,488 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 (18)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:46,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-08-30 02:22:46,686 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:46,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash -925720759, now seen corresponding path program 10 times [2023-08-30 02:22:46,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:46,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703712932] [2023-08-30 02:22:46,687 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:22:46,687 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 [2023-08-30 02:22:46,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:46,688 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-08-30 02:22:46,689 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 (19)] Waiting until timeout for monitored process [2023-08-30 02:22:46,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:22:46,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:46,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:22:46,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:46,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:22:46,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:22:47,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:47,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703712932] [2023-08-30 02:22:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703712932] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:47,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:22:47,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-30 02:22:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041034761] [2023-08-30 02:22:47,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:47,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 02:22:47,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:47,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 02:22:47,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-08-30 02:22:47,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:47,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 2082 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:47,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:47,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:47,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:49,171 INFO L130 PetriNetUnfolder]: 692/1267 cut-off events. [2023-08-30 02:22:49,172 INFO L131 PetriNetUnfolder]: For 76869/76869 co-relation queries the response was YES. [2023-08-30 02:22:49,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 1267 events. 692/1267 cut-off events. For 76869/76869 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6365 event pairs, 38 based on Foata normal form. 32/1299 useless extension candidates. Maximal degree in co-relation 12171. Up to 444 conditions per place. [2023-08-30 02:22:49,182 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 110 selfloop transitions, 147 changer transitions 27/284 dead transitions. [2023-08-30 02:22:49,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 284 transitions, 5875 flow [2023-08-30 02:22:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 02:22:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 02:22:49,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2344 transitions. [2023-08-30 02:22:49,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650793650793651 [2023-08-30 02:22:49,185 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2344 transitions. [2023-08-30 02:22:49,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2344 transitions. [2023-08-30 02:22:49,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:49,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2344 transitions. [2023-08-30 02:22:49,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 66.97142857142858) internal successors, (2344), 35 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:49,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 144.0) internal successors, (5184), 36 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:49,192 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 144.0) internal successors, (5184), 36 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:49,192 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 2082 flow. Second operand 35 states and 2344 transitions. [2023-08-30 02:22:49,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 284 transitions, 5875 flow [2023-08-30 02:22:49,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 284 transitions, 5148 flow, removed 341 selfloop flow, removed 10 redundant places. [2023-08-30 02:22:49,259 INFO L231 Difference]: Finished difference. Result has 196 places, 191 transitions, 4139 flow [2023-08-30 02:22:49,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4139, PETRI_PLACES=196, PETRI_TRANSITIONS=191} [2023-08-30 02:22:49,260 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 172 predicate places. [2023-08-30 02:22:49,260 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 191 transitions, 4139 flow [2023-08-30 02:22:49,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:49,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:49,261 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:49,269 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 (19)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:49,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-08-30 02:22:49,466 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:49,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash -925004659, now seen corresponding path program 11 times [2023-08-30 02:22:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:49,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260120536] [2023-08-30 02:22:49,467 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:22:49,467 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 [2023-08-30 02:22:49,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:49,468 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-08-30 02:22:49,471 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 (20)] Waiting until timeout for monitored process [2023-08-30 02:22:49,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 02:22:49,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:49,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:22:49,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:22:49,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:22:49,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:49,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260120536] [2023-08-30 02:22:49,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260120536] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:49,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:22:49,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-30 02:22:49,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716512366] [2023-08-30 02:22:49,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:49,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 02:22:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 02:22:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-08-30 02:22:50,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:50,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 191 transitions, 4139 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:50,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:50,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:50,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:51,614 INFO L130 PetriNetUnfolder]: 756/1383 cut-off events. [2023-08-30 02:22:51,614 INFO L131 PetriNetUnfolder]: For 116743/116743 co-relation queries the response was YES. [2023-08-30 02:22:51,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 1383 events. 756/1383 cut-off events. For 116743/116743 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7128 event pairs, 30 based on Foata normal form. 40/1423 useless extension candidates. Maximal degree in co-relation 14476. Up to 492 conditions per place. [2023-08-30 02:22:51,630 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 84 selfloop transitions, 162 changer transitions 54/300 dead transitions. [2023-08-30 02:22:51,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 300 transitions, 6668 flow [2023-08-30 02:22:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 02:22:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 02:22:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2014 transitions. [2023-08-30 02:22:51,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46620370370370373 [2023-08-30 02:22:51,633 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2014 transitions. [2023-08-30 02:22:51,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2014 transitions. [2023-08-30 02:22:51,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:51,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2014 transitions. [2023-08-30 02:22:51,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 67.13333333333334) internal successors, (2014), 30 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:51,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 144.0) internal successors, (4464), 31 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:51,640 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 144.0) internal successors, (4464), 31 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:51,640 INFO L175 Difference]: Start difference. First operand has 196 places, 191 transitions, 4139 flow. Second operand 30 states and 2014 transitions. [2023-08-30 02:22:51,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 300 transitions, 6668 flow [2023-08-30 02:22:51,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 300 transitions, 4781 flow, removed 891 selfloop flow, removed 17 redundant places. [2023-08-30 02:22:51,871 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 3497 flow [2023-08-30 02:22:51,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3497, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2023-08-30 02:22:51,871 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 188 predicate places. [2023-08-30 02:22:51,872 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 3497 flow [2023-08-30 02:22:51,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:51,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:51,872 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:51,881 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 (20)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:52,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-08-30 02:22:52,080 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:52,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:52,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2014607281, now seen corresponding path program 12 times [2023-08-30 02:22:52,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800408628] [2023-08-30 02:22:52,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:22:52,081 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 [2023-08-30 02:22:52,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:52,082 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-08-30 02:22:52,083 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 (21)] Waiting until timeout for monitored process [2023-08-30 02:22:52,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 02:22:52,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:22:52,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 02:22:52,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:22:52,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:22:52,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:52,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800408628] [2023-08-30 02:22:52,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800408628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:52,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:22:52,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-30 02:22:52,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397200148] [2023-08-30 02:22:52,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:52,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 02:22:52,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 02:22:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-08-30 02:22:52,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:52,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 3497 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:52,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:52,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:52,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:22:53,943 INFO L130 PetriNetUnfolder]: 840/1523 cut-off events. [2023-08-30 02:22:53,943 INFO L131 PetriNetUnfolder]: For 112483/112483 co-relation queries the response was YES. [2023-08-30 02:22:53,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14600 conditions, 1523 events. 840/1523 cut-off events. For 112483/112483 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7801 event pairs, 54 based on Foata normal form. 28/1551 useless extension candidates. Maximal degree in co-relation 14519. Up to 424 conditions per place. [2023-08-30 02:22:53,955 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 96 selfloop transitions, 176 changer transitions 50/322 dead transitions. [2023-08-30 02:22:53,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 322 transitions, 6365 flow [2023-08-30 02:22:53,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 02:22:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 02:22:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1880 transitions. [2023-08-30 02:22:53,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662698412698413 [2023-08-30 02:22:53,958 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1880 transitions. [2023-08-30 02:22:53,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1880 transitions. [2023-08-30 02:22:53,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:22:53,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1880 transitions. [2023-08-30 02:22:53,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 67.14285714285714) internal successors, (1880), 28 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:53,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 144.0) internal successors, (4176), 29 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:53,964 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 144.0) internal successors, (4176), 29 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:53,964 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 3497 flow. Second operand 28 states and 1880 transitions. [2023-08-30 02:22:53,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 322 transitions, 6365 flow [2023-08-30 02:22:54,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 5818 flow, removed 215 selfloop flow, removed 19 redundant places. [2023-08-30 02:22:54,126 INFO L231 Difference]: Finished difference. Result has 236 places, 232 transitions, 4493 flow [2023-08-30 02:22:54,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4493, PETRI_PLACES=236, PETRI_TRANSITIONS=232} [2023-08-30 02:22:54,126 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2023-08-30 02:22:54,127 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 232 transitions, 4493 flow [2023-08-30 02:22:54,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:54,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:22:54,127 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:22:54,136 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 (21)] Forceful destruction successful, exit code 0 [2023-08-30 02:22:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-08-30 02:22:54,332 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:22:54,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:22:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash 790771329, now seen corresponding path program 13 times [2023-08-30 02:22:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:22:54,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653339536] [2023-08-30 02:22:54,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 02:22:54,333 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 [2023-08-30 02:22:54,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:22:54,334 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-08-30 02:22:54,334 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 (22)] Waiting until timeout for monitored process [2023-08-30 02:22:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:22:54,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:22:54,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:22:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:54,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:22:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:22:55,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:22:55,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653339536] [2023-08-30 02:22:55,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653339536] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:22:55,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:22:55,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:22:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958544623] [2023-08-30 02:22:55,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:22:55,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:22:55,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:22:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:22:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:22:55,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:22:55,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 232 transitions, 4493 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:22:55,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:22:55,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:22:55,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:00,763 INFO L130 PetriNetUnfolder]: 924/1663 cut-off events. [2023-08-30 02:23:00,763 INFO L131 PetriNetUnfolder]: For 171852/171852 co-relation queries the response was YES. [2023-08-30 02:23:00,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18483 conditions, 1663 events. 924/1663 cut-off events. For 171852/171852 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8305 event pairs, 12 based on Foata normal form. 28/1691 useless extension candidates. Maximal degree in co-relation 18391. Up to 480 conditions per place. [2023-08-30 02:23:00,778 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 95 selfloop transitions, 217 changer transitions 102/414 dead transitions. [2023-08-30 02:23:00,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 414 transitions, 9487 flow [2023-08-30 02:23:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-08-30 02:23:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-08-30 02:23:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3609 transitions. [2023-08-30 02:23:00,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46412037037037035 [2023-08-30 02:23:00,781 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3609 transitions. [2023-08-30 02:23:00,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3609 transitions. [2023-08-30 02:23:00,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:00,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3609 transitions. [2023-08-30 02:23:00,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 66.83333333333333) internal successors, (3609), 54 states have internal predecessors, (3609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:00,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 144.0) internal successors, (7920), 55 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:00,791 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 144.0) internal successors, (7920), 55 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:00,791 INFO L175 Difference]: Start difference. First operand has 236 places, 232 transitions, 4493 flow. Second operand 54 states and 3609 transitions. [2023-08-30 02:23:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 414 transitions, 9487 flow [2023-08-30 02:23:01,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 414 transitions, 8807 flow, removed 313 selfloop flow, removed 9 redundant places. [2023-08-30 02:23:01,069 INFO L231 Difference]: Finished difference. Result has 294 places, 253 transitions, 5443 flow [2023-08-30 02:23:01,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3813, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=5443, PETRI_PLACES=294, PETRI_TRANSITIONS=253} [2023-08-30 02:23:01,070 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 270 predicate places. [2023-08-30 02:23:01,070 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 253 transitions, 5443 flow [2023-08-30 02:23:01,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:01,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:01,070 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:01,077 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 (22)] Ended with exit code 0 [2023-08-30 02:23:01,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-08-30 02:23:01,271 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:01,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1030732913, now seen corresponding path program 14 times [2023-08-30 02:23:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:23:01,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119608436] [2023-08-30 02:23:01,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:23:01,271 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 [2023-08-30 02:23:01,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:23:01,272 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-08-30 02:23:01,273 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 (23)] Waiting until timeout for monitored process [2023-08-30 02:23:01,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 02:23:01,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:01,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:23:01,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:01,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:02,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:23:02,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119608436] [2023-08-30 02:23:02,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119608436] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:02,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:23:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:23:02,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532157683] [2023-08-30 02:23:02,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:02,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:23:02,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:23:02,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:23:02,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:23:02,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:23:02,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 253 transitions, 5443 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:02,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:02,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:23:02,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:04,013 INFO L130 PetriNetUnfolder]: 980/1775 cut-off events. [2023-08-30 02:23:04,013 INFO L131 PetriNetUnfolder]: For 253184/253184 co-relation queries the response was YES. [2023-08-30 02:23:04,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22231 conditions, 1775 events. 980/1775 cut-off events. For 253184/253184 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8885 event pairs, 367 based on Foata normal form. 40/1815 useless extension candidates. Maximal degree in co-relation 22125. Up to 1501 conditions per place. [2023-08-30 02:23:04,030 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 263 selfloop transitions, 33 changer transitions 47/343 dead transitions. [2023-08-30 02:23:04,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 343 transitions, 8675 flow [2023-08-30 02:23:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 02:23:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 02:23:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1737 transitions. [2023-08-30 02:23:04,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639423076923077 [2023-08-30 02:23:04,032 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1737 transitions. [2023-08-30 02:23:04,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1737 transitions. [2023-08-30 02:23:04,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:04,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1737 transitions. [2023-08-30 02:23:04,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 66.8076923076923) internal successors, (1737), 26 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:04,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 144.0) internal successors, (3888), 27 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:04,037 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 144.0) internal successors, (3888), 27 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:04,037 INFO L175 Difference]: Start difference. First operand has 294 places, 253 transitions, 5443 flow. Second operand 26 states and 1737 transitions. [2023-08-30 02:23:04,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 343 transitions, 8675 flow [2023-08-30 02:23:04,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 343 transitions, 6940 flow, removed 617 selfloop flow, removed 43 redundant places. [2023-08-30 02:23:04,378 INFO L231 Difference]: Finished difference. Result has 290 places, 267 transitions, 4832 flow [2023-08-30 02:23:04,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4832, PETRI_PLACES=290, PETRI_TRANSITIONS=267} [2023-08-30 02:23:04,378 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 266 predicate places. [2023-08-30 02:23:04,378 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 267 transitions, 4832 flow [2023-08-30 02:23:04,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:04,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:04,379 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:04,386 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 (23)] Ended with exit code 0 [2023-08-30 02:23:04,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-08-30 02:23:04,586 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:04,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:04,586 INFO L85 PathProgramCache]: Analyzing trace with hash -229469181, now seen corresponding path program 15 times [2023-08-30 02:23:04,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:23:04,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919626007] [2023-08-30 02:23:04,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 02:23:04,586 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 [2023-08-30 02:23:04,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:23:04,587 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-08-30 02:23:04,588 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 (24)] Waiting until timeout for monitored process [2023-08-30 02:23:04,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 02:23:04,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:04,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:23:04,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:04,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:05,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:23:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919626007] [2023-08-30 02:23:05,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919626007] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:05,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:23:05,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:23:05,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996186905] [2023-08-30 02:23:05,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:05,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:23:05,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:23:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:23:05,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:23:05,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:23:05,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 267 transitions, 4832 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:05,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:05,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:23:05,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:09,994 INFO L130 PetriNetUnfolder]: 1264/2335 cut-off events. [2023-08-30 02:23:09,995 INFO L131 PetriNetUnfolder]: For 409335/409335 co-relation queries the response was YES. [2023-08-30 02:23:10,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31137 conditions, 2335 events. 1264/2335 cut-off events. For 409335/409335 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 12467 event pairs, 335 based on Foata normal form. 40/2375 useless extension candidates. Maximal degree in co-relation 31021. Up to 1316 conditions per place. [2023-08-30 02:23:10,016 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 305 selfloop transitions, 122 changer transitions 59/486 dead transitions. [2023-08-30 02:23:10,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 486 transitions, 12007 flow [2023-08-30 02:23:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-30 02:23:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-30 02:23:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3261 transitions. [2023-08-30 02:23:10,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46215986394557823 [2023-08-30 02:23:10,022 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3261 transitions. [2023-08-30 02:23:10,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3261 transitions. [2023-08-30 02:23:10,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:10,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3261 transitions. [2023-08-30 02:23:10,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 66.55102040816327) internal successors, (3261), 49 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:10,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 144.0) internal successors, (7200), 50 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:10,031 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 144.0) internal successors, (7200), 50 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:10,031 INFO L175 Difference]: Start difference. First operand has 290 places, 267 transitions, 4832 flow. Second operand 49 states and 3261 transitions. [2023-08-30 02:23:10,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 486 transitions, 12007 flow [2023-08-30 02:23:10,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 486 transitions, 11247 flow, removed 361 selfloop flow, removed 11 redundant places. [2023-08-30 02:23:10,558 INFO L231 Difference]: Finished difference. Result has 352 places, 330 transitions, 7249 flow [2023-08-30 02:23:10,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7249, PETRI_PLACES=352, PETRI_TRANSITIONS=330} [2023-08-30 02:23:10,559 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 328 predicate places. [2023-08-30 02:23:10,559 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 330 transitions, 7249 flow [2023-08-30 02:23:10,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:10,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:10,559 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:10,566 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 (24)] Forceful destruction successful, exit code 0 [2023-08-30 02:23:10,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-08-30 02:23:10,764 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:10,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash -912191537, now seen corresponding path program 16 times [2023-08-30 02:23:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:23:10,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002911883] [2023-08-30 02:23:10,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 02:23:10,765 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 [2023-08-30 02:23:10,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:23:10,766 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-08-30 02:23:10,767 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 (25)] Waiting until timeout for monitored process [2023-08-30 02:23:10,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 02:23:10,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:10,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:23:10,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:10,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:11,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:23:11,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002911883] [2023-08-30 02:23:11,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002911883] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:11,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:23:11,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:23:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969722962] [2023-08-30 02:23:11,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:11,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:23:11,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:23:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:23:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:23:11,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:23:11,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 330 transitions, 7249 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:11,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:11,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:23:11,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:19,963 INFO L130 PetriNetUnfolder]: 1872/3451 cut-off events. [2023-08-30 02:23:19,963 INFO L131 PetriNetUnfolder]: For 926017/926017 co-relation queries the response was YES. [2023-08-30 02:23:19,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57384 conditions, 3451 events. 1872/3451 cut-off events. For 926017/926017 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 19912 event pairs, 65 based on Foata normal form. 56/3507 useless extension candidates. Maximal degree in co-relation 57243. Up to 1244 conditions per place. [2023-08-30 02:23:20,002 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 217 selfloop transitions, 423 changer transitions 63/703 dead transitions. [2023-08-30 02:23:20,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 703 transitions, 22061 flow [2023-08-30 02:23:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-30 02:23:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-30 02:23:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 4667 transitions. [2023-08-30 02:23:20,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46299603174603177 [2023-08-30 02:23:20,007 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 4667 transitions. [2023-08-30 02:23:20,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 4667 transitions. [2023-08-30 02:23:20,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:20,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 4667 transitions. [2023-08-30 02:23:20,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 66.67142857142858) internal successors, (4667), 70 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:20,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 144.0) internal successors, (10224), 71 states have internal predecessors, (10224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:20,018 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 144.0) internal successors, (10224), 71 states have internal predecessors, (10224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:20,018 INFO L175 Difference]: Start difference. First operand has 352 places, 330 transitions, 7249 flow. Second operand 70 states and 4667 transitions. [2023-08-30 02:23:20,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 703 transitions, 22061 flow [2023-08-30 02:23:21,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 703 transitions, 19579 flow, removed 1195 selfloop flow, removed 21 redundant places. [2023-08-30 02:23:21,312 INFO L231 Difference]: Finished difference. Result has 424 places, 513 transitions, 15746 flow [2023-08-30 02:23:21,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=15746, PETRI_PLACES=424, PETRI_TRANSITIONS=513} [2023-08-30 02:23:21,312 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 400 predicate places. [2023-08-30 02:23:21,312 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 513 transitions, 15746 flow [2023-08-30 02:23:21,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:21,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:21,313 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:21,320 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 (25)] Forceful destruction successful, exit code 0 [2023-08-30 02:23:21,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-08-30 02:23:21,513 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:21,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash -314878821, now seen corresponding path program 17 times [2023-08-30 02:23:21,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:23:21,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830947400] [2023-08-30 02:23:21,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 02:23:21,514 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 [2023-08-30 02:23:21,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:23:21,515 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-08-30 02:23:21,517 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 (26)] Waiting until timeout for monitored process [2023-08-30 02:23:21,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-30 02:23:21,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 02:23:21,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 02:23:21,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:23:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:21,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 02:23:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:23:22,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:23:22,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830947400] [2023-08-30 02:23:22,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830947400] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 02:23:22,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 02:23:22,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-30 02:23:22,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118994031] [2023-08-30 02:23:22,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 02:23:22,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 02:23:22,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:23:22,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 02:23:22,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2023-08-30 02:23:22,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-30 02:23:22,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 513 transitions, 15746 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:22,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:23:22,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-30 02:23:22,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:23:26,843 INFO L130 PetriNetUnfolder]: 1892/3487 cut-off events. [2023-08-30 02:23:26,843 INFO L131 PetriNetUnfolder]: For 1406781/1406781 co-relation queries the response was YES. [2023-08-30 02:23:26,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63734 conditions, 3487 events. 1892/3487 cut-off events. For 1406781/1406781 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 20098 event pairs, 27 based on Foata normal form. 96/3583 useless extension candidates. Maximal degree in co-relation 63572. Up to 1260 conditions per place. [2023-08-30 02:23:26,887 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 133 selfloop transitions, 456 changer transitions 90/679 dead transitions. [2023-08-30 02:23:26,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 679 transitions, 23596 flow [2023-08-30 02:23:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 02:23:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 02:23:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3213 transitions. [2023-08-30 02:23:26,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2023-08-30 02:23:26,890 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3213 transitions. [2023-08-30 02:23:26,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3213 transitions. [2023-08-30 02:23:26,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:23:26,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3213 transitions. [2023-08-30 02:23:26,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 66.9375) internal successors, (3213), 48 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:26,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 144.0) internal successors, (7056), 49 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:26,897 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 144.0) internal successors, (7056), 49 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:26,897 INFO L175 Difference]: Start difference. First operand has 424 places, 513 transitions, 15746 flow. Second operand 48 states and 3213 transitions. [2023-08-30 02:23:26,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 679 transitions, 23596 flow [2023-08-30 02:23:29,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 679 transitions, 14594 flow, removed 4368 selfloop flow, removed 26 redundant places. [2023-08-30 02:23:29,158 INFO L231 Difference]: Finished difference. Result has 450 places, 525 transitions, 10644 flow [2023-08-30 02:23:29,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=7468, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10644, PETRI_PLACES=450, PETRI_TRANSITIONS=525} [2023-08-30 02:23:29,159 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 426 predicate places. [2023-08-30 02:23:29,159 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 525 transitions, 10644 flow [2023-08-30 02:23:29,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:23:29,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:23:29,159 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:29,168 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 (26)] Forceful destruction successful, exit code 0 [2023-08-30 02:23:29,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-08-30 02:23:29,365 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:23:29,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:23:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash -888381091, now seen corresponding path program 18 times [2023-08-30 02:23:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:23:29,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865793442] [2023-08-30 02:23:29,366 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 02:23:29,366 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 [2023-08-30 02:23:29,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:23:29,367 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-08-30 02:23:29,368 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 (27)] Waiting until timeout for monitored process [2023-08-30 02:23:29,456 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-08-30 02:23:29,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-08-30 02:23:29,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:23:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:23:29,539 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-30 02:23:29,539 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:23:29,540 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-08-30 02:23:29,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-30 02:23:29,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-30 02:23:29,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-30 02:23:29,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-08-30 02:23:29,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-30 02:23:29,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-30 02:23:29,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-30 02:23:29,563 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 (27)] Ended with exit code 0 [2023-08-30 02:23:29,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-08-30 02:23:29,764 INFO L445 BasicCegarLoop]: Path program histogram: [18, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:23:29,767 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 02:23:29,767 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 02:23:29,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:23:29 BasicIcfg [2023-08-30 02:23:29,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 02:23:29,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 02:23:29,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 02:23:29,801 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 02:23:29,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:22:29" (3/4) ... [2023-08-30 02:23:29,803 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 02:23:29,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 02:23:29,803 INFO L158 Benchmark]: Toolchain (without parser) took 60593.30ms. Allocated memory was 71.3MB in the beginning and 671.1MB in the end (delta: 599.8MB). Free memory was 48.9MB in the beginning and 178.6MB in the end (delta: -129.7MB). Peak memory consumption was 470.8MB. Max. memory is 16.1GB. [2023-08-30 02:23:29,804 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 58.7MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:23:29,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.44ms. Allocated memory is still 71.3MB. Free memory was 48.7MB in the beginning and 46.3MB in the end (delta: 2.4MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-08-30 02:23:29,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.53ms. Allocated memory is still 71.3MB. Free memory was 46.3MB in the beginning and 44.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:23:29,804 INFO L158 Benchmark]: Boogie Preprocessor took 29.83ms. Allocated memory is still 71.3MB. Free memory was 44.2MB in the beginning and 42.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:23:29,804 INFO L158 Benchmark]: RCFGBuilder took 355.93ms. Allocated memory is still 71.3MB. Free memory was 42.5MB in the beginning and 27.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 02:23:29,805 INFO L158 Benchmark]: TraceAbstraction took 59819.15ms. Allocated memory was 71.3MB in the beginning and 671.1MB in the end (delta: 599.8MB). Free memory was 50.1MB in the beginning and 179.6MB in the end (delta: -129.6MB). Peak memory consumption was 469.6MB. Max. memory is 16.1GB. [2023-08-30 02:23:29,805 INFO L158 Benchmark]: Witness Printer took 2.32ms. Allocated memory is still 671.1MB. Free memory was 179.6MB in the beginning and 178.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:23:29,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 58.7MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.44ms. Allocated memory is still 71.3MB. Free memory was 48.7MB in the beginning and 46.3MB in the end (delta: 2.4MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.53ms. Allocated memory is still 71.3MB. Free memory was 46.3MB in the beginning and 44.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.83ms. Allocated memory is still 71.3MB. Free memory was 44.2MB in the beginning and 42.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 355.93ms. Allocated memory is still 71.3MB. Free memory was 42.5MB in the beginning and 27.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 59819.15ms. Allocated memory was 71.3MB in the beginning and 671.1MB in the end (delta: 599.8MB). Free memory was 50.1MB in the beginning and 179.6MB in the end (delta: -129.6MB). Peak memory consumption was 469.6MB. Max. memory is 16.1GB. * Witness Printer took 2.32ms. Allocated memory is still 671.1MB. Free memory was 179.6MB in the beginning and 178.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 75 PlacesBefore, 24 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1254 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 69 TotalNumberOfCompositions, 1134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 994, independent: 967, independent conditional: 0, independent unconditional: 967, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 657, independent: 645, independent conditional: 0, independent unconditional: 645, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 994, independent: 322, independent conditional: 0, independent unconditional: 322, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 657, unknown conditional: 0, unknown unconditional: 657] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=27, arg={0:0}, argc=27, argv={29:28}, argv={29:28}, i=3, id1={7:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-1] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=27, arg={0:0}, arg={0:0}, arg={0:0}, argc=27, argv={29:28}, argv={29:28}, i=3, id1={7:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=27, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=27, argv={29:28}, argv={29:28}, condI=0, i=7, id1={7:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=27, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=27, argv={29:28}, argv={29:28}, condI=0, condJ=1, i=25, id1={7:0}, id2={3:0}, j=26, k=10, k=10] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 59.7s, OverallIterations: 26, TraceHistogramMax: 10, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 42.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 5717 SdHoareTripleChecker+Valid, 12.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5500 mSDsluCounter, 1863 SdHoareTripleChecker+Invalid, 10.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1801 mSDsCounter, 480 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16421 IncrementalHoareTripleChecker+Invalid, 16907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 480 mSolverCounterUnsat, 62 mSDtfsCounter, 16421 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 854 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 675 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8858 ImplicationChecksByTransitivity, 24.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15746occurred in iteration=24, InterpolantAutomatonStates: 490, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 464 ConstructedInterpolants, 6 QuantifiedInterpolants, 3576 SizeOfPredicates, 116 NumberOfNonLiveVariables, 1907 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 38 InterpolantComputations, 12 PerfectInterpolantSequences, 8/440 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-30 02:23:29,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample